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2 ·a02acb3c36dafee71f21aea9f58e32d4·35988932·debug·optional·python3-pandas-lib-dbgsym_2.2.3+dfsg-9_amd64.deb 
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1 Package:·python-pandas-doc1 Package:·python-pandas-doc
2 Source:·pandas2 Source:·pandas
3 Version:·2.2.3+dfsg-93 Version:·2.2.3+dfsg-9
4 Architecture:·all4 Architecture:·all
5 Maintainer:·Debian·Science·Team·<debian-science-maintainers@lists.alioth.debian.org>5 Maintainer:·Debian·Science·Team·<debian-science-maintainers@lists.alioth.debian.org>
6 Installed-Size:·2099086 Installed-Size:·209907
7 Depends:·libjs-sphinxdoc·(>=·8.1),·libjs-mathjax7 Depends:·libjs-sphinxdoc·(>=·8.1),·libjs-mathjax
8 Suggests:·python3-pandas8 Suggests:·python3-pandas
9 Section:·doc9 Section:·doc
10 Priority:·optional10 Priority:·optional
11 Multi-Arch:·foreign11 Multi-Arch:·foreign
12 Homepage:·https://pandas.pydata.org/12 Homepage:·https://pandas.pydata.org/
13 Description:·data·structures·for·"relational"·or·"labeled"·data·-·documentation13 Description:·data·structures·for·"relational"·or·"labeled"·data·-·documentation
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21664 ········"01t12":·953,21668 ········"01t12":·953,
21665 ········"01t23":·[893,·2186,·2246],21669 ········"01t23":·[893,·2186,·2246],
21666 ········"02":·[13,·16,·17,·19,·26,·27,·29,·31,·79,·80,·82,·133,·182,·183,·202,·207,·208,·213,·218,·230,·261,·271,·276,·277,·278,·286,·287,·288,·289,·290,·291,·292,·293,·294,·295,·296,·299,·301,·304,·305,·306,·307,·310,·312,·313,·314,·318,·319,·320,·321,·322,·323,·324,·326,·327,·329,·330,·331,·332,·345,·362,·363,·423,·519,·534,·536,·542,·543,·544,·545,·546,·547,·548,·549,·557,·558,·562,·563,·564,·565,·566,·575,·591,·592,·593,·637,·639,·640,·641,·642,·643,·644,·645,·646,·647,·649,·650,·651,·652,·654,·656,·657,·658,·659,·665,·666,·667,·673,·674,·675,·677,·678,·679,·680,·684,·685,·686,·688,·708,·760,·761,·781,·782,·788,·793,·804,·893,·899,·902,·903,·904,·919,·939,·940,·943,·945,·948,·949,·953,·957,·970,·997,·1014,·1051,·1075,·1118,·1122,·1141,·1144,·1145,·1147,·1157,·1170,·1171,·1176,·1180,·1185,·1192,·1195,·1197,·1206,·1214,·1227,·1228,·1233,·1239,·1245,·1246,·1253,·1256,·1258,·1268,·1269,·1270,·1271,·1272,·1273,·1274,·1275,·1277,·1278,·1279,·1280,·1282,·1283,·1284,·1285,·1287,·1288,·1289,·1290,·1291,·1292,·1293,·1294,·1295,·1297,·1344,·1393,·1452,·1498,·1500,·1506,·1542,·1620,·1699,·1815,·1947,·2054,·2127,·2145,·2184,·2185,·2186,·2188,·2191,·2195,·2197,·2199,·2201,·2204,·2205,·2207,·2209,·2210,·2212,·2213,·2214,·2215,·2216,·2217,·2218,·2220,·2222,·2223,·2225,·2226,·2228,·2229,·2230,·2231,·2232,·2235,·2238,·2240,·2241,·2246,·2261,·2264,·2265,·2271,·2283,·2294,·2298,·2301,·2307],21670 ········"02":·[13,·16,·17,·19,·26,·27,·29,·31,·79,·80,·82,·133,·182,·183,·202,·207,·208,·213,·218,·230,·261,·271,·276,·277,·278,·286,·287,·288,·289,·290,·291,·292,·293,·294,·295,·296,·299,·301,·304,·305,·306,·307,·310,·312,·313,·314,·318,·319,·320,·321,·322,·323,·324,·326,·327,·329,·330,·331,·332,·345,·362,·363,·423,·519,·534,·536,·542,·543,·544,·545,·546,·547,·548,·549,·557,·558,·562,·563,·564,·565,·566,·575,·591,·592,·593,·637,·639,·640,·641,·642,·643,·644,·645,·646,·647,·649,·650,·651,·652,·654,·656,·657,·658,·659,·665,·666,·667,·673,·674,·675,·677,·678,·679,·680,·684,·685,·686,·688,·708,·760,·761,·781,·782,·788,·793,·804,·893,·899,·902,·903,·904,·919,·939,·940,·943,·945,·948,·949,·953,·957,·970,·997,·1014,·1051,·1075,·1118,·1122,·1141,·1144,·1145,·1147,·1157,·1170,·1171,·1176,·1180,·1185,·1192,·1195,·1197,·1206,·1214,·1227,·1228,·1233,·1239,·1245,·1246,·1253,·1256,·1258,·1268,·1269,·1270,·1271,·1272,·1273,·1274,·1275,·1277,·1278,·1279,·1280,·1282,·1283,·1284,·1285,·1287,·1288,·1289,·1290,·1291,·1292,·1293,·1294,·1295,·1297,·1344,·1393,·1452,·1498,·1500,·1506,·1542,·1620,·1699,·1815,·1947,·2054,·2127,·2145,·2184,·2185,·2186,·2188,·2191,·2195,·2197,·2199,·2201,·2204,·2205,·2207,·2209,·2210,·2212,·2213,·2214,·2215,·2216,·2217,·2218,·2220,·2222,·2223,·2225,·2226,·2228,·2229,·2230,·2231,·2232,·2235,·2238,·2240,·2241,·2246,·2261,·2264,·2265,·2271,·2283,·2294,·2298,·2301,·2307],
 21671 ········"020":·2193,
21667 ········"0200":·[957,·969,·970,·997,·1498,·2210],21672 ········"0200":·[957,·969,·970,·997,·1498,·2210],
21668 ········"020161":·[102,·1158],21673 ········"020161":·[102,·1158],
21669 ········"020208":·2195,21674 ········"020208":·2195,
21670 ········"020376":·2207,21675 ········"020376":·2207,
21671 ········"020399":·2195,21676 ········"020399":·2195,
21672 ········"020485":·2207,21677 ········"020485":·2207,
21673 ········"020544":·2186,21678 ········"020544":·2186,
Offset 21676, 15 lines modifiedOffset 21681, 14 lines modified
21676 ········"021244":·2207,21681 ········"021244":·2207,
21677 ········"021255":·2230,21682 ········"021255":·2230,
21678 ········"021292":·2186,21683 ········"021292":·2186,
21679 ········"021377":·2207,21684 ········"021377":·2207,
21680 ········"021382":·2184,21685 ········"021382":·2184,
21681 ········"021499":·2186,21686 ········"021499":·2186,
21682 ········"02155":·30,21687 ········"02155":·30,
21683 ········"022":·2193, 
21684 ········"022070":·2184,21688 ········"022070":·2184,
21685 ········"022196":·2207,21689 ········"022196":·2207,
21686 ········"022777":·2207,21690 ········"022777":·2207,
21687 ········"023":·[1447,·2200,·2232],21691 ········"023":·[1447,·2200,·2232],
21688 ········"023100":·2195,21692 ········"023100":·2195,
21689 ········"023167":·15,21693 ········"023167":·15,
21690 ········"023202":·2199,21694 ········"023202":·2199,
Offset 21737, 15 lines modifiedOffset 21741, 15 lines modified
21737 ········"029587":·2193,21741 ········"029587":·2193,
21738 ········"029630":·2195,21742 ········"029630":·2195,
21739 ········"029766":·2197,21743 ········"029766":·2197,
21740 ········"02d":·2205,21744 ········"02d":·2205,
21741 ········"02t00":·[2199,·2210,·2235,·2261],21745 ········"02t00":·[2199,·2210,·2235,·2261],
21742 ········"02t02":·2235,21746 ········"02t02":·2235,
21743 ········"02t05":·[909,·2210],21747 ········"02t05":·[909,·2210],
21744 ········"03":·[26,·27,·29,·31,·79,·80,·82,·121,·182,·207,·213,·218,·219,·230,·264,·278,·286,·287,·290,·291,·292,·294,·296,·298,·301,·302,·304,·305,·306,·307,·310,·313,·314,·318,·321,·322,·326,·330,·331,·332,·362,·420,·423,·512,·517,·518,·519,·522,·524,·530,·534,·536,·543,·544,·545,·546,·547,·548,·549,·551,·557,·558,·562,·563,·564,·565,·566,·591,·592,·593,·637,·640,·642,·643,·644,·646,·651,·652,·656,·657,·658,·659,·666,·667,·673,·675,·677,·680,·681,·685,·686,·688,·696,·760,·781,·788,·793,·799,·804,·904,·939,·941,·943,·944,·945,·948,·949,·953,·955,·956,·957,·958,·962,·970,·973,·983,·990,·992,·995,·997,·999,·1002,·1006,·1007,·1008,·1009,·1013,·1014,·1018,·1051,·1075,·1145,·1169,·1192,·1226,·1253,·1269,·1270,·1276,·1280,·1289,·1344,·1393,·1447,·1452,·1489,·1498,·1500,·1506,·1542,·1699,·1741,·1793,·1815,·1982,·2000,·2108,·2184,·2185,·2186,·2188,·2191,·2193,·2195,·2197,·2199,·2200,·2201,·2204,·2205,·2207,·2209,·2210,·2212,·2214,·2215,·2216,·2218,·2219,·2220,·2222,·2225,·2226,·2228,·2229,·2230,·2231,·2232,·2235,·2238,·2240,·2241,·2246,·2261,·2264,·2271,·2283,·2298,·2302],21748 ········"03":·[26,·27,·29,·31,·79,·80,·82,·121,·182,·207,·213,·218,·219,·230,·264,·278,·286,·287,·290,·291,·292,·294,·296,·298,·301,·302,·304,·305,·306,·307,·310,·313,·314,·318,·321,·322,·326,·330,·331,·332,·362,·420,·423,·512,·517,·518,·519,·522,·524,·530,·534,·536,·543,·544,·545,·546,·547,·548,·549,·551,·557,·558,·562,·563,·564,·565,·566,·591,·592,·593,·637,·640,·642,·643,·644,·646,·651,·652,·656,·657,·658,·659,·666,·667,·673,·675,·677,·680,·681,·685,·686,·688,·696,·760,·781,·788,·793,·799,·804,·904,·939,·941,·943,·944,·945,·948,·949,·953,·955,·956,·957,·958,·962,·970,·973,·983,·990,·992,·995,·997,·999,·1002,·1006,·1007,·1008,·1009,·1013,·1014,·1018,·1051,·1075,·1145,·1169,·1192,·1226,·1253,·1269,·1270,·1276,·1280,·1289,·1344,·1393,·1447,·1452,·1489,·1498,·1500,·1506,·1542,·1699,·1741,·1793,·1815,·1982,·2000,·2108,·2184,·2185,·2186,·2188,·2191,·2195,·2197,·2199,·2200,·2201,·2204,·2205,·2207,·2209,·2210,·2212,·2214,·2215,·2216,·2218,·2219,·2220,·2222,·2225,·2226,·2228,·2229,·2230,·2231,·2232,·2235,·2238,·2240,·2241,·2246,·2261,·2264,·2271,·2283,·2298,·2302],
21745 ········"030":·[1447,·2200,·2232],21749 ········"030":·[1447,·2200,·2232],
21746 ········"0300":·2271,21750 ········"0300":·2271,
21747 ········"030000":·18,21751 ········"030000":·18,
21748 ········"030015":·2207,21752 ········"030015":·2207,
21749 ········"030045":·2186,21753 ········"030045":·2186,
21750 ········"030178":·2207,21754 ········"030178":·2207,
21751 ········"030388":·2207,21755 ········"030388":·2207,
Offset 21893, 15 lines modifiedOffset 21897, 15 lines modified
21893 ········"049695":·2199,21897 ········"049695":·2199,
21894 ········"049748":·2204,21898 ········"049748":·2204,
21895 ········"049783":·2207,21899 ········"049783":·2207,
21896 ········"049798":·2199,21900 ········"049798":·2199,
21897 ········"049851":·2195,21901 ········"049851":·2195,
21898 ········"04d":·2188,21902 ········"04d":·2188,
21899 ········"04t00":·2261,21903 ········"04t00":·2261,
21900 ········"05":·[13,·26,·27,·29,·30,·31,·80,·148,·149,·177,·178,·183,·207,·213,·218,·230,·264,·273,·276,·292,·294,·298,·302,·316,·326,·330,·331,·332,·345,·363,·423,·551,·592,·597,·644,·646,·670,·680,·685,·686,·688,·725,·726,·755,·756,·761,·781,·788,·793,·804,·900,·902,·905,·944,·1075,·1145,·1274,·1289,·1344,·1441,·1442,·1447,·1449,·1450,·1452,·1465,·1495,·1498,·1500,·1506,·1524,·1542,·1560,·1677,·1699,·1758,·2163,·2184,·2185,·2186,·2188,·2195,·2197,·2199,·2200,·2201,·2204,·2205,·2207,·2209,·2210,·2212,·2214,·2215,·2216,·2217,·2218,·2219,·2220,·2222,·2223,·2225,·2226,·2227,·2228,·2229,·2230,·2231,·2232,·2235,·2241,·2246,·2249,·2261,·2264,·2271,·2283,·2298,·2302,·2307],21904 ········"05":·[13,·26,·27,·29,·30,·31,·80,·148,·149,·177,·178,·183,·207,·213,·218,·230,·264,·273,·276,·292,·294,·298,·302,·316,·326,·330,·331,·332,·345,·363,·423,·551,·592,·597,·644,·646,·670,·680,·685,·686,·688,·725,·726,·755,·756,·761,·781,·788,·793,·804,·900,·902,·905,·944,·1075,·1145,·1274,·1289,·1344,·1441,·1442,·1447,·1449,·1450,·1452,·1465,·1495,·1498,·1500,·1506,·1524,·1542,·1560,·1677,·1699,·1758,·2163,·2184,·2185,·2186,·2188,·2193,·2195,·2197,·2199,·2200,·2201,·2204,·2205,·2207,·2209,·2210,·2212,·2214,·2215,·2216,·2217,·2218,·2219,·2220,·2222,·2223,·2225,·2226,·2227,·2228,·2229,·2230,·2231,·2232,·2235,·2241,·2246,·2249,·2261,·2264,·2271,·2283,·2298,·2302,·2307],
21901 ········"0500":·[24,·25,·28,·29,·32,·1498,·2210,·2235],21905 ········"0500":·[24,·25,·28,·29,·32,·1498,·2210,·2235],
21902 ········"050000":·[522,·524,·530],21906 ········"050000":·[522,·524,·530],
21903 ········"050038":·2207,21907 ········"050038":·2207,
21904 ········"050046":·2210,21908 ········"050046":·2210,
21905 ········"050390":·2186,21909 ········"050390":·2186,
21906 ········"050498":·2207,21910 ········"050498":·2207,
21907 ········"051514":·2186,21911 ········"051514":·2186,
Offset 21962, 15 lines modifiedOffset 21966, 15 lines modified
21962 ········"059481":·2207,21966 ········"059481":·2207,
21963 ········"059552":·2207,21967 ········"059552":·2207,
21964 ········"059761":·2207,21968 ········"059761":·2207,
21965 ········"059869e":·2191,21969 ········"059869e":·2191,
21966 ········"059881":·2210,21970 ········"059881":·2210,
Max diff block lines reached; 39324/47651 bytes (82.53%) of diff not shown.
4.39 KB
./usr/share/doc/python-pandas-doc/html/user_guide/advanced.html
    
Offset 1847, 25 lines modifiedOffset 1847, 25 lines modified
1847 <span·class="gp">In·[141]:·</span><span·class="n">indexer</span>·<span·class="o">=</span>·<span·class="n">np</span><span·class="o">.</span><span·class="n">arange</span><span·class="p">(</span><span·class="mi">10000</span><span·class="p">)</span>1847 <span·class="gp">In·[141]:·</span><span·class="n">indexer</span>·<span·class="o">=</span>·<span·class="n">np</span><span·class="o">.</span><span·class="n">arange</span><span·class="p">(</span><span·class="mi">10000</span><span·class="p">)</span>
  
1848 <span·class="gp">In·[142]:·</span><span·class="n">random</span><span·class="o">.</span><span·class="n">shuffle</span><span·class="p">(</span><span·class="n">indexer</span><span·class="p">)</span>1848 <span·class="gp">In·[142]:·</span><span·class="n">random</span><span·class="o">.</span><span·class="n">shuffle</span><span·class="p">(</span><span·class="n">indexer</span><span·class="p">)</span>
  
1849 <span·class="gp">In·[143]:·</span><span·class="o">%</span><span·class="k">timeit</span>·arr[indexer]1849 <span·class="gp">In·[143]:·</span><span·class="o">%</span><span·class="k">timeit</span>·arr[indexer]
1850 <span·class="gp">···.....:·</span><span·class="o">%</span><span·class="k">timeit</span>·arr.take(indexer,·axis=0)1850 <span·class="gp">···.....:·</span><span·class="o">%</span><span·class="k">timeit</span>·arr.take(indexer,·axis=0)
1851 <span·class="gp">···.....:·</span>1851 <span·class="gp">···.....:·</span>
1852 <span·class="go">157·us·+-·2.63·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)</span>1852 <span·class="go">117·us·+-·712·ns·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)</span>
1853 <span·class="go">38.8·us·+-·1.38·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)</span>1853 <span·class="go">30.7·us·+-·1.08·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)</span>
1854 </pre></div>1854 </pre></div>
1855 </div>1855 </div>
1856 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[144]:·</span><span·class="n">ser</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">Series</span><span·class="p">(</span><span·class="n">arr</span><span·class="p">[:,</span>·<span·class="mi">0</span><span·class="p">])</span>1856 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[144]:·</span><span·class="n">ser</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">Series</span><span·class="p">(</span><span·class="n">arr</span><span·class="p">[:,</span>·<span·class="mi">0</span><span·class="p">])</span>
  
1857 <span·class="gp">In·[145]:·</span><span·class="o">%</span><span·class="k">timeit</span>·ser.iloc[indexer]1857 <span·class="gp">In·[145]:·</span><span·class="o">%</span><span·class="k">timeit</span>·ser.iloc[indexer]
1858 <span·class="gp">···.....:·</span><span·class="o">%</span><span·class="k">timeit</span>·ser.take(indexer)1858 <span·class="gp">···.....:·</span><span·class="o">%</span><span·class="k">timeit</span>·ser.take(indexer)
1859 <span·class="gp">···.....:·</span>1859 <span·class="gp">···.....:·</span>
1860 <span·class="go">118·us·+-·13.3·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)</span> 
1861 <span·class="go">87.8·us·+-·481·ns·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)</span>1860 <span·class="go">63.8·us·+-·210·ns·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)</span>
 1861 <span·class="go">59.9·us·+-·346·ns·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)</span>
1862 </pre></div>1862 </pre></div>
1863 </div>1863 </div>
1864 </section>1864 </section>
1865 <section·id="index-types">1865 <section·id="index-types">
1866 <span·id="advanced-index-types"></span><h2>Index·types<a·class="headerlink"·href="#index-types"·title="Link·to·this·heading">#</a></h2>1866 <span·id="advanced-index-types"></span><h2>Index·types<a·class="headerlink"·href="#index-types"·title="Link·to·this·heading">#</a></h2>
1867 <p>We·have·discussed·<code·class="docutils·literal·notranslate"><span·class="pre">MultiIndex</span></code>·in·the·previous·sections·pretty·extensively.1867 <p>We·have·discussed·<code·class="docutils·literal·notranslate"><span·class="pre">MultiIndex</span></code>·in·the·previous·sections·pretty·extensively.
1868 Documentation·about·<code·class="docutils·literal·notranslate"><span·class="pre">DatetimeIndex</span></code>·and·<code·class="docutils·literal·notranslate"><span·class="pre">PeriodIndex</span></code>·are·shown·<a·class="reference·internal"·href="timeseries.html#timeseries-overview"><span·class="std·std-ref">here</span></a>,1868 Documentation·about·<code·class="docutils·literal·notranslate"><span·class="pre">DatetimeIndex</span></code>·and·<code·class="docutils·literal·notranslate"><span·class="pre">PeriodIndex</span></code>·are·shown·<a·class="reference·internal"·href="timeseries.html#timeseries-overview"><span·class="std·std-ref">here</span></a>,
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1245 In·[141]:·indexer·=·np.arange(10000)1245 In·[141]:·indexer·=·np.arange(10000)
  
1246 In·[142]:·random.shuffle(indexer)1246 In·[142]:·random.shuffle(indexer)
  
1247 In·[143]:·%timeit·arr[indexer]1247 In·[143]:·%timeit·arr[indexer]
1248 ···.....:·%timeit·arr.take(indexer,·axis=0)1248 ···.....:·%timeit·arr.take(indexer,·axis=0)
1249 ···.....:1249 ···.....:
1250 157·us·+-·2.63·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)1250 117·us·+-·712·ns·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)
1251 38.8·us·+-·1.38·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)1251 30.7·us·+-·1.08·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)
1252 In·[144]:·ser·=·pd.Series(arr[:,·0])1252 In·[144]:·ser·=·pd.Series(arr[:,·0])
  
1253 In·[145]:·%timeit·ser.iloc[indexer]1253 In·[145]:·%timeit·ser.iloc[indexer]
1254 ···.....:·%timeit·ser.take(indexer)1254 ···.....:·%timeit·ser.take(indexer)
1255 ···.....:1255 ···.....:
1256 118·us·+-·13.3·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each) 
1257 87.8·us·+-·481·ns·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)1256 63.8·us·+-·210·ns·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)
 1257 59.9·us·+-·346·ns·per·loop·(mean·+-·std.·dev.·of·7·runs,·10,000·loops·each)
1258 *\x8**\x8**\x8**\x8**\x8*·I\x8In\x8nd\x8de\x8ex\x8x·t\x8ty\x8yp\x8pe\x8es\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8**\x8*1258 *\x8**\x8**\x8**\x8**\x8*·I\x8In\x8nd\x8de\x8ex\x8x·t\x8ty\x8yp\x8pe\x8es\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8**\x8*
1259 We·have·discussed·MultiIndex·in·the·previous·sections·pretty·extensively.1259 We·have·discussed·MultiIndex·in·the·previous·sections·pretty·extensively.
1260 Documentation·about·DatetimeIndex·and·PeriodIndex·are·shown·_\x8h_\x8e_\x8r_\x8e,·and1260 Documentation·about·DatetimeIndex·and·PeriodIndex·are·shown·_\x8h_\x8e_\x8r_\x8e,·and
1261 documentation·about·TimedeltaIndex·is·found·_\x8h_\x8e_\x8r_\x8e.1261 documentation·about·TimedeltaIndex·is·found·_\x8h_\x8e_\x8r_\x8e.
1262 In·the·following·sub-sections·we·will·highlight·some·other·index·types.1262 In·the·following·sub-sections·we·will·highlight·some·other·index·types.
1263 *\x8**\x8**\x8**\x8*·C\x8Ca\x8at\x8te\x8eg\x8go\x8or\x8ri\x8ic\x8ca\x8al\x8lI\x8In\x8nd\x8de\x8ex\x8x_\x8#\x8#·*\x8**\x8**\x8**\x8*1263 *\x8**\x8**\x8**\x8*·C\x8Ca\x8at\x8te\x8eg\x8go\x8or\x8ri\x8ic\x8ca\x8al\x8lI\x8In\x8nd\x8de\x8ex\x8x_\x8#\x8#·*\x8**\x8**\x8**\x8*
1264 _\x8C_\x8a_\x8t_\x8e_\x8g_\x8o_\x8r_\x8i_\x8c_\x8a_\x8l_\x8I_\x8n_\x8d_\x8e_\x8x·is·a·type·of·index·that·is·useful·for·supporting·indexing·with1264 _\x8C_\x8a_\x8t_\x8e_\x8g_\x8o_\x8r_\x8i_\x8c_\x8a_\x8l_\x8I_\x8n_\x8d_\x8e_\x8x·is·a·type·of·index·that·is·useful·for·supporting·indexing·with
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592 <span·class="gp">···...:·</span>········<span·class="n">s</span>·<span·class="o">+=</span>·<span·class="n">f</span><span·class="p">(</span><span·class="n">a</span>·<span·class="o">+</span>·<span·class="n">i</span>·<span·class="o">*</span>·<span·class="n">dx</span><span·class="p">)</span>592 <span·class="gp">···...:·</span>········<span·class="n">s</span>·<span·class="o">+=</span>·<span·class="n">f</span><span·class="p">(</span><span·class="n">a</span>·<span·class="o">+</span>·<span·class="n">i</span>·<span·class="o">*</span>·<span·class="n">dx</span><span·class="p">)</span>
593 <span·class="gp">···...:·</span>····<span·class="k">return</span>·<span·class="n">s</span>·<span·class="o">*</span>·<span·class="n">dx</span>593 <span·class="gp">···...:·</span>····<span·class="k">return</span>·<span·class="n">s</span>·<span·class="o">*</span>·<span·class="n">dx</span>
594 <span·class="gp">···...:·</span>594 <span·class="gp">···...:·</span>
595 </pre></div>595 </pre></div>
596 </div>596 </div>
597 <p>We·achieve·our·result·by·using·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.apply.html#pandas.DataFrame.apply"·title="pandas.DataFrame.apply"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">DataFrame.apply()</span></code></a>·(row-wise):</p>597 <p>We·achieve·our·result·by·using·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.apply.html#pandas.DataFrame.apply"·title="pandas.DataFrame.apply"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">DataFrame.apply()</span></code></a>·(row-wise):</p>
598 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[5]:·</span><span·class="o">%</span><span·class="k">timeit</span>·df.apply(lambda·x:·integrate_f(x[&quot;a&quot;],·x[&quot;b&quot;],·x[&quot;N&quot;]),·axis=1)598 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[5]:·</span><span·class="o">%</span><span·class="k">timeit</span>·df.apply(lambda·x:·integrate_f(x[&quot;a&quot;],·x[&quot;b&quot;],·x[&quot;N&quot;]),·axis=1)
599 <span·class="go">58.3·ms·+-·2·ms·per·loop·(mean·+-·std.·dev.·of·7·runs,·10·loops·each)</span>599 <span·class="go">52.8·ms·+-·1.12·ms·per·loop·(mean·+-·std.·dev.·of·7·runs,·10·loops·each)</span>
600 </pre></div>600 </pre></div>
601 </div>601 </div>
602 <p>Let’s·take·a·look·and·see·where·the·time·is·spent·during·this·operation602 <p>Let’s·take·a·look·and·see·where·the·time·is·spent·during·this·operation
603 using·the·<a·class="reference·external"·href="https://ipython.readthedocs.io/en/stable/interactive/magics.html#magic-prun">prun·ipython·magic·function</a>:</p>603 using·the·<a·class="reference·external"·href="https://ipython.readthedocs.io/en/stable/interactive/magics.html#magic-prun">prun·ipython·magic·function</a>:</p>
604 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="go">#·most·time·consuming·4·calls</span>604 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="go">#·most·time·consuming·4·calls</span>
605 <span·class="gp">In·[6]:·</span><span·class="o">%</span><span·class="k">prun</span>·-l·4·df.apply(lambda·x:·integrate_f(x[&quot;a&quot;],·x[&quot;b&quot;],·x[&quot;N&quot;]),·axis=1)··#·noqa·E999605 <span·class="gp">In·[6]:·</span><span·class="o">%</span><span·class="k">prun</span>·-l·4·df.apply(lambda·x:·integrate_f(x[&quot;a&quot;],·x[&quot;b&quot;],·x[&quot;N&quot;]),·axis=1)··#·noqa·E999
606 <span·class="go">·········605946·function·calls·(605928·primitive·calls)·in·0.158·seconds</span>606 <span·class="go">·········605946·function·calls·(605928·primitive·calls)·in·0.156·seconds</span>
  
607 <span·class="go">···Ordered·by:·internal·time</span>607 <span·class="go">···Ordered·by:·internal·time</span>
608 <span·class="go">···List·reduced·from·159·to·4·due·to·restriction·&lt;4&gt;</span>608 <span·class="go">···List·reduced·from·159·to·4·due·to·restriction·&lt;4&gt;</span>
  
609 <span·class="go">···ncalls··tottime··percall··cumtime··percall·filename:lineno(function)</span>609 <span·class="go">···ncalls··tottime··percall··cumtime··percall·filename:lineno(function)</span>
610 <span·class="go">·····1000····0.092····0.000····0.137····0.000·&lt;ipython-input-4-c2a74e076cf0&gt;:1(integrate_f)</span>610 <span·class="go">·····1000····0.088····0.000····0.134····0.000·&lt;ipython-input-4-c2a74e076cf0&gt;:1(integrate_f)</span>
611 <span·class="go">···552423····0.046····0.000····0.046····0.000·&lt;ipython-input-3-c138bdd570e3&gt;:1(f)</span>611 <span·class="go">···552423····0.046····0.000····0.046····0.000·&lt;ipython-input-3-c138bdd570e3&gt;:1(f)</span>
612 <span·class="go">·····3000····0.004····0.000····0.014····0.000·series.py:1095(__getitem__)</span>612 <span·class="go">·····3000····0.004····0.000····0.013····0.000·series.py:1095(__getitem__)</span>
613 <span·class="go">·····3000····0.002····0.000····0.006····0.000·series.py:1220(_get_value)</span>613 <span·class="go">·····3000····0.002····0.000····0.006····0.000·series.py:1220(_get_value)</span>
614 </pre></div>614 </pre></div>
615 </div>615 </div>
616 <p>By·far·the·majority·of·time·is·spend·inside·either·<code·class="docutils·literal·notranslate"><span·class="pre">integrate_f</span></code>·or·<code·class="docutils·literal·notranslate"><span·class="pre">f</span></code>,616 <p>By·far·the·majority·of·time·is·spend·inside·either·<code·class="docutils·literal·notranslate"><span·class="pre">integrate_f</span></code>·or·<code·class="docutils·literal·notranslate"><span·class="pre">f</span></code>,
617 hence·we’ll·concentrate·our·efforts·cythonizing·these·two·functions.</p>617 hence·we’ll·concentrate·our·efforts·cythonizing·these·two·functions.</p>
618 </section>618 </section>
619 <section·id="plain-cython">619 <section·id="plain-cython">
Offset 634, 15 lines modifiedOffset 634, 15 lines modified
634 <span·class="gp">···...:·</span>····for·i·in·range(N):634 <span·class="gp">···...:·</span>····for·i·in·range(N):
635 <span·class="gp">···...:·</span>········s·+=·f_plain(a·+·i·*·dx)635 <span·class="gp">···...:·</span>········s·+=·f_plain(a·+·i·*·dx)
636 <span·class="gp">···...:·</span>····return·s·*·dx636 <span·class="gp">···...:·</span>····return·s·*·dx
637 <span·class="gp">···...:·</span>637 <span·class="gp">···...:·</span>
638 </pre></div>638 </pre></div>
639 </div>639 </div>
640 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[9]:·</span><span·class="o">%</span><span·class="k">timeit</span>·df.apply(lambda·x:·integrate_f_plain(x[&quot;a&quot;],·x[&quot;b&quot;],·x[&quot;N&quot;]),·axis=1)640 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[9]:·</span><span·class="o">%</span><span·class="k">timeit</span>·df.apply(lambda·x:·integrate_f_plain(x[&quot;a&quot;],·x[&quot;b&quot;],·x[&quot;N&quot;]),·axis=1)
641 <span·class="go">63.6·ms·+-·7.66·ms·per·loop·(mean·+-·std.·dev.·of·7·runs,·10·loops·each)</span>641 <span·class="go">56.7·ms·+-·341·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·10·loops·each)</span>
642 </pre></div>642 </pre></div>
643 </div>643 </div>
644 <p>This·has·improved·the·performance·compared·to·the·pure·Python·approach·by·one-third.</p>644 <p>This·has·improved·the·performance·compared·to·the·pure·Python·approach·by·one-third.</p>
645 </section>645 </section>
646 <section·id="declaring-c-types">646 <section·id="declaring-c-types">
647 <span·id="enhancingperf-type"></span><h3>Declaring·C·types<a·class="headerlink"·href="#declaring-c-types"·title="Link·to·this·heading">#</a></h3>647 <span·id="enhancingperf-type"></span><h3>Declaring·C·types<a·class="headerlink"·href="#declaring-c-types"·title="Link·to·this·heading">#</a></h3>
648 <p>We·can·annotate·the·function·variables·and·return·types·as·well·as·use·<code·class="docutils·literal·notranslate"><span·class="pre">cdef</span></code>648 <p>We·can·annotate·the·function·variables·and·return·types·as·well·as·use·<code·class="docutils·literal·notranslate"><span·class="pre">cdef</span></code>
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658 <span·class="gp">···....:·</span>····for·i·in·range(N):658 <span·class="gp">···....:·</span>····for·i·in·range(N):
659 <span·class="gp">···....:·</span>········s·+=·f_typed(a·+·i·*·dx)659 <span·class="gp">···....:·</span>········s·+=·f_typed(a·+·i·*·dx)
660 <span·class="gp">···....:·</span>····return·s·*·dx660 <span·class="gp">···....:·</span>····return·s·*·dx
661 <span·class="gp">···....:·</span>661 <span·class="gp">···....:·</span>
662 </pre></div>662 </pre></div>
663 </div>663 </div>
664 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[11]:·</span><span·class="o">%</span><span·class="k">timeit</span>·df.apply(lambda·x:·integrate_f_typed(x[&quot;a&quot;],·x[&quot;b&quot;],·x[&quot;N&quot;]),·axis=1)664 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[11]:·</span><span·class="o">%</span><span·class="k">timeit</span>·df.apply(lambda·x:·integrate_f_typed(x[&quot;a&quot;],·x[&quot;b&quot;],·x[&quot;N&quot;]),·axis=1)
665 <span·class="go">7.84·ms·+-·872·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)</span>665 <span·class="go">6.18·ms·+-·29.8·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)</span>
666 </pre></div>666 </pre></div>
667 </div>667 </div>
668 <p>Annotating·the·functions·with·C·types·yields·an·over·ten·times·performance·improvement·compared·to668 <p>Annotating·the·functions·with·C·types·yields·an·over·ten·times·performance·improvement·compared·to
669 the·original·Python·implementation.</p>669 the·original·Python·implementation.</p>
670 </section>670 </section>
671 <section·id="using-ndarray">671 <section·id="using-ndarray">
672 <span·id="enhancingperf-ndarray"></span><h3>Using·ndarray<a·class="headerlink"·href="#using-ndarray"·title="Link·to·this·heading">#</a></h3>672 <span·id="enhancingperf-ndarray"></span><h3>Using·ndarray<a·class="headerlink"·href="#using-ndarray"·title="Link·to·this·heading">#</a></h3>
673 <p>When·re-profiling,·time·is·spent·creating·a·<a·class="reference·internal"·href="../reference/api/pandas.Series.html#pandas.Series"·title="pandas.Series"><code·class="xref·py·py-class·docutils·literal·notranslate"><span·class="pre">Series</span></code></a>·from·each·row,·and·calling·<code·class="docutils·literal·notranslate"><span·class="pre">__getitem__</span></code>·from·both673 <p>When·re-profiling,·time·is·spent·creating·a·<a·class="reference·internal"·href="../reference/api/pandas.Series.html#pandas.Series"·title="pandas.Series"><code·class="xref·py·py-class·docutils·literal·notranslate"><span·class="pre">Series</span></code></a>·from·each·row,·and·calling·<code·class="docutils·literal·notranslate"><span·class="pre">__getitem__</span></code>·from·both
674 the·index·and·the·series·(three·times·for·each·row).·These·Python·function·calls·are·expensive·and674 the·index·and·the·series·(three·times·for·each·row).·These·Python·function·calls·are·expensive·and
675 can·be·improved·by·passing·an·<code·class="docutils·literal·notranslate"><span·class="pre">np.ndarray</span></code>.</p>675 can·be·improved·by·passing·an·<code·class="docutils·literal·notranslate"><span·class="pre">np.ndarray</span></code>.</p>
676 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[12]:·</span><span·class="o">%</span><span·class="k">prun</span>·-l·4·df.apply(lambda·x:·integrate_f_typed(x[&quot;a&quot;],·x[&quot;b&quot;],·x[&quot;N&quot;]),·axis=1)676 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[12]:·</span><span·class="o">%</span><span·class="k">prun</span>·-l·4·df.apply(lambda·x:·integrate_f_typed(x[&quot;a&quot;],·x[&quot;b&quot;],·x[&quot;N&quot;]),·axis=1)
677 <span·class="go">·········52523·function·calls·(52505·primitive·calls)·in·0.022·seconds</span>677 <span·class="go">·········52523·function·calls·(52505·primitive·calls)·in·0.020·seconds</span>
  
678 <span·class="go">···Ordered·by:·internal·time</span>678 <span·class="go">···Ordered·by:·internal·time</span>
679 <span·class="go">···List·reduced·from·157·to·4·due·to·restriction·&lt;4&gt;</span>679 <span·class="go">···List·reduced·from·157·to·4·due·to·restriction·&lt;4&gt;</span>
  
680 <span·class="go">···ncalls··tottime··percall··cumtime··percall·filename:lineno(function)</span>680 <span·class="go">···ncalls··tottime··percall··cumtime··percall·filename:lineno(function)</span>
681 <span·class="go">·····3000····0.004····0.000····0.014····0.000·series.py:1095(__getitem__)</span>681 <span·class="go">·····3000····0.003····0.000····0.012····0.000·series.py:1095(__getitem__)</span>
682 <span·class="go">·····3000····0.002····0.000····0.006····0.000·series.py:1220(_get_value)</span>682 <span·class="go">·····3000····0.002····0.000····0.005····0.000·series.py:1220(_get_value)</span>
683 <span·class="go">····16098····0.002····0.000····0.003····0.000·{built-in·method·builtins.isinstance}</span>683 <span·class="go">····16098····0.002····0.000····0.002····0.000·{built-in·method·builtins.isinstance}</span>
684 <span·class="go">·····3000····0.002····0.000····0.002····0.000·base.py:3777(get_loc)</span>684 <span·class="go">·····3000····0.002····0.000····0.002····0.000·base.py:3777(get_loc)</span>
685 </pre></div>685 </pre></div>
686 </div>686 </div>
687 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[13]:·</span><span·class="o">%%</span><span·class="k">cython</span>687 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[13]:·</span><span·class="o">%%</span><span·class="k">cython</span>
688 <span·class="gp">···....:·</span>cimport·numpy·as·np688 <span·class="gp">···....:·</span>cimport·numpy·as·np
689 <span·class="gp">···....:·</span>import·numpy·as·np689 <span·class="gp">···....:·</span>import·numpy·as·np
690 <span·class="gp">···....:·</span>cdef·double·f_typed(double·x)·except?·-2:690 <span·class="gp">···....:·</span>cdef·double·f_typed(double·x)·except?·-2:
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722 </div>722 </div>
723 <p>This·implementation·creates·an·array·of·zeros·and·inserts·the·result723 <p>This·implementation·creates·an·array·of·zeros·and·inserts·the·result
724 of·<code·class="docutils·literal·notranslate"><span·class="pre">integrate_f_typed</span></code>·applied·over·each·row.·Looping·over·an·<code·class="docutils·literal·notranslate"><span·class="pre">ndarray</span></code>·is·faster724 of·<code·class="docutils·literal·notranslate"><span·class="pre">integrate_f_typed</span></code>·applied·over·each·row.·Looping·over·an·<code·class="docutils·literal·notranslate"><span·class="pre">ndarray</span></code>·is·faster
725 in·Cython·than·looping·over·a·<a·class="reference·internal"·href="../reference/api/pandas.Series.html#pandas.Series"·title="pandas.Series"><code·class="xref·py·py-class·docutils·literal·notranslate"><span·class="pre">Series</span></code></a>·object.</p>725 in·Cython·than·looping·over·a·<a·class="reference·internal"·href="../reference/api/pandas.Series.html#pandas.Series"·title="pandas.Series"><code·class="xref·py·py-class·docutils·literal·notranslate"><span·class="pre">Series</span></code></a>·object.</p>
726 <p>Since·<code·class="docutils·literal·notranslate"><span·class="pre">apply_integrate_f</span></code>·is·typed·to·accept·an·<code·class="docutils·literal·notranslate"><span·class="pre">np.ndarray</span></code>,·<a·class="reference·internal"·href="../reference/api/pandas.Series.to_numpy.html#pandas.Series.to_numpy"·title="pandas.Series.to_numpy"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">Series.to_numpy()</span></code></a>726 <p>Since·<code·class="docutils·literal·notranslate"><span·class="pre">apply_integrate_f</span></code>·is·typed·to·accept·an·<code·class="docutils·literal·notranslate"><span·class="pre">np.ndarray</span></code>,·<a·class="reference·internal"·href="../reference/api/pandas.Series.to_numpy.html#pandas.Series.to_numpy"·title="pandas.Series.to_numpy"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">Series.to_numpy()</span></code></a>
727 calls·are·needed·to·utilize·this·function.</p>727 calls·are·needed·to·utilize·this·function.</p>
728 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[14]:·</span><span·class="o">%</span><span·class="k">timeit</span>·apply_integrate_f(df[&quot;a&quot;].to_numpy(),·df[&quot;b&quot;].to_numpy(),·df[&quot;N&quot;].to_numpy())728 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[14]:·</span><span·class="o">%</span><span·class="k">timeit</span>·apply_integrate_f(df[&quot;a&quot;].to_numpy(),·df[&quot;b&quot;].to_numpy(),·df[&quot;N&quot;].to_numpy())
729 <span·class="go">1e+03·us·+-·152·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·1,000·loops·each)</span>729 <span·class="go">908·us·+-·4.59·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·1,000·loops·each)</span>
730 </pre></div>730 </pre></div>
731 </div>731 </div>
732 <p>Performance·has·improved·from·the·prior·implementation·by·almost·ten·times.</p>732 <p>Performance·has·improved·from·the·prior·implementation·by·almost·ten·times.</p>
733 </section>733 </section>
734 <section·id="disabling-compiler-directives">734 <section·id="disabling-compiler-directives">
735 <span·id="enhancingperf-boundswrap"></span><h3>Disabling·compiler·directives<a·class="headerlink"·href="#disabling-compiler-directives"·title="Link·to·this·heading">#</a></h3>735 <span·id="enhancingperf-boundswrap"></span><h3>Disabling·compiler·directives<a·class="headerlink"·href="#disabling-compiler-directives"·title="Link·to·this·heading">#</a></h3>
736 <p>The·majority·of·the·time·is·now·spent·in·<code·class="docutils·literal·notranslate"><span·class="pre">apply_integrate_f</span></code>.·Disabling·Cython’s·<code·class="docutils·literal·notranslate"><span·class="pre">boundscheck</span></code>736 <p>The·majority·of·the·time·is·now·spent·in·<code·class="docutils·literal·notranslate"><span·class="pre">apply_integrate_f</span></code>.·Disabling·Cython’s·<code·class="docutils·literal·notranslate"><span·class="pre">boundscheck</span></code>
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782 <span·class="go">·················from·/build/reproducible-path/pandas-2.2.3+dfsg/buildtmp/.cache/ipython/cython/_cython_magic_b00abb3164401a98fefff54d942b7c1d6995eb64.c:1251:</span>782 <span·class="go">·················from·/build/reproducible-path/pandas-2.2.3+dfsg/buildtmp/.cache/ipython/cython/_cython_magic_b00abb3164401a98fefff54d942b7c1d6995eb64.c:1251:</span>
783 <span·class="go">/usr/lib/x86_64-linux-gnu/python3-numpy/numpy/_core/include/numpy/npy_1_7_deprecated_api.h:17:2:·warning:·#warning·&quot;Using·deprecated·NumPy·API,·disable·it·with·&quot;·&quot;#define·NPY_NO_DEPRECATED_API·NPY_1_7_API_VERSION&quot;·[-Wcpp]</span>783 <span·class="go">/usr/lib/x86_64-linux-gnu/python3-numpy/numpy/_core/include/numpy/npy_1_7_deprecated_api.h:17:2:·warning:·#warning·&quot;Using·deprecated·NumPy·API,·disable·it·with·&quot;·&quot;#define·NPY_NO_DEPRECATED_API·NPY_1_7_API_VERSION&quot;·[-Wcpp]</span>
784 <span·class="go">···17·|·#warning·&quot;Using·deprecated·NumPy·API,·disable·it·with·&quot;·\</span>784 <span·class="go">···17·|·#warning·&quot;Using·deprecated·NumPy·API,·disable·it·with·&quot;·\</span>
785 <span·class="go">······|··^~~~~~~</span>785 <span·class="go">······|··^~~~~~~</span>
786 </pre></div>786 </pre></div>
787 </div>787 </div>
788 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[17]:·</span><span·class="o">%</span><span·class="k">timeit</span>·apply_integrate_f_wrap(df[&quot;a&quot;].to_numpy(),·df[&quot;b&quot;].to_numpy(),·df[&quot;N&quot;].to_numpy())788 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[17]:·</span><span·class="o">%</span><span·class="k">timeit</span>·apply_integrate_f_wrap(df[&quot;a&quot;].to_numpy(),·df[&quot;b&quot;].to_numpy(),·df[&quot;N&quot;].to_numpy())
789 <span·class="go">755·us·+-·107·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·1,000·loops·each)</span>789 <span·class="go">685·us·+-·4.33·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·1,000·loops·each)</span>
790 </pre></div>790 </pre></div>
791 </div>791 </div>
792 <p>However,·a·loop·indexer·<code·class="docutils·literal·notranslate"><span·class="pre">i</span></code>·accessing·an·invalid·location·in·an·array·would·cause·a·segfault·because·memory·access·isn’t·checked.792 <p>However,·a·loop·indexer·<code·class="docutils·literal·notranslate"><span·class="pre">i</span></code>·accessing·an·invalid·location·in·an·array·would·cause·a·segfault·because·memory·access·isn’t·checked.
793 For·more·about·<code·class="docutils·literal·notranslate"><span·class="pre">boundscheck</span></code>·and·<code·class="docutils·literal·notranslate"><span·class="pre">wraparound</span></code>,·see·the·Cython·docs·on793 For·more·about·<code·class="docutils·literal·notranslate"><span·class="pre">boundscheck</span></code>·and·<code·class="docutils·literal·notranslate"><span·class="pre">wraparound</span></code>,·see·the·Cython·docs·on
794 <a·class="reference·external"·href="https://cython.readthedocs.io/en/latest/src/userguide/source_files_and_compilation.html#compiler-directives">compiler·directives</a>.</p>794 <a·class="reference·external"·href="https://cython.readthedocs.io/en/latest/src/userguide/source_files_and_compilation.html#compiler-directives">compiler·directives</a>.</p>
795 </section>795 </section>
796 </section>796 </section>
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1148 compared·to·standard·Python·syntax·for·large·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.html#pandas.DataFrame"·title="pandas.DataFrame"><code·class="xref·py·py-class·docutils·literal·notranslate"><span·class="pre">DataFrame</span></code></a>.·This·engine·requires·the1148 compared·to·standard·Python·syntax·for·large·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.html#pandas.DataFrame"·title="pandas.DataFrame"><code·class="xref·py·py-class·docutils·literal·notranslate"><span·class="pre">DataFrame</span></code></a>.·This·engine·requires·the
1149 optional·dependency·<code·class="docutils·literal·notranslate"><span·class="pre">numexpr</span></code>·to·be·installed.</p>1149 optional·dependency·<code·class="docutils·literal·notranslate"><span·class="pre">numexpr</span></code>·to·be·installed.</p>
1150 <p>The·<code·class="docutils·literal·notranslate"><span·class="pre">'python'</span></code>·engine·is·generally·<em>not</em>·useful·except·for·testing1150 <p>The·<code·class="docutils·literal·notranslate"><span·class="pre">'python'</span></code>·engine·is·generally·<em>not</em>·useful·except·for·testing
1151 other·evaluation·engines·against·it.·You·will·achieve·<strong>no</strong>·performance1151 other·evaluation·engines·against·it.·You·will·achieve·<strong>no</strong>·performance
1152 benefits·using·<a·class="reference·internal"·href="../reference/api/pandas.eval.html#pandas.eval"·title="pandas.eval"><code·class="xref·py·py-func·docutils·literal·notranslate"><span·class="pre">eval()</span></code></a>·with·<code·class="docutils·literal·notranslate"><span·class="pre">engine='python'</span></code>·and·may1152 benefits·using·<a·class="reference·internal"·href="../reference/api/pandas.eval.html#pandas.eval"·title="pandas.eval"><code·class="xref·py·py-func·docutils·literal·notranslate"><span·class="pre">eval()</span></code></a>·with·<code·class="docutils·literal·notranslate"><span·class="pre">engine='python'</span></code>·and·may
1153 incur·a·performance·hit.</p>1153 incur·a·performance·hit.</p>
1154 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[40]:·</span><span·class="o">%</span><span·class="k">timeit</span>·df1·+·df2·+·df3·+·df41154 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[40]:·</span><span·class="o">%</span><span·class="k">timeit</span>·df1·+·df2·+·df3·+·df4
1155 <span·class="go">7.93·ms·+-·397·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)</span>1155 <span·class="go">4.84·ms·+-·53.2·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)</span>
1156 </pre></div>1156 </pre></div>
1157 </div>1157 </div>
1158 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[41]:·</span><span·class="o">%</span><span·class="k">timeit</span>·pd.eval(&quot;df1·+·df2·+·df3·+·df4&quot;,·engine=&quot;python&quot;)1158 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[41]:·</span><span·class="o">%</span><span·class="k">timeit</span>·pd.eval(&quot;df1·+·df2·+·df3·+·df4&quot;,·engine=&quot;python&quot;)
1159 <span·class="go">9.77·ms·+-·381·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)</span>1159 <span·class="go">5.72·ms·+-·54.6·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)</span>
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Offset 110, 31 lines modifiedOffset 110, 31 lines modified
110 ···...:·····dx·=·(b·-·a)·/·N110 ···...:·····dx·=·(b·-·a)·/·N
111 ···...:·····for·i·in·range(N):111 ···...:·····for·i·in·range(N):
112 ···...:·········s·+=·f(a·+·i·*·dx)112 ···...:·········s·+=·f(a·+·i·*·dx)
113 ···...:·····return·s·*·dx113 ···...:·····return·s·*·dx
114 ···...:114 ···...:
115 We·achieve·our·result·by·using·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8a_\x8p_\x8p_\x8l_\x8y_\x8(_\x8)·(row-wise):115 We·achieve·our·result·by·using·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8a_\x8p_\x8p_\x8l_\x8y_\x8(_\x8)·(row-wise):
116 In·[5]:·%timeit·df.apply(lambda·x:·integrate_f(x["a"],·x["b"],·x["N"]),·axis=1)116 In·[5]:·%timeit·df.apply(lambda·x:·integrate_f(x["a"],·x["b"],·x["N"]),·axis=1)
117 58.3·ms·+-·2·ms·per·loop·(mean·+-·std.·dev.·of·7·runs,·10·loops·each)117 52.8·ms·+-·1.12·ms·per·loop·(mean·+-·std.·dev.·of·7·runs,·10·loops·each)
118 Let’s·take·a·look·and·see·where·the·time·is·spent·during·this·operation·using118 Let’s·take·a·look·and·see·where·the·time·is·spent·during·this·operation·using
119 the·_\x8p_\x8r_\x8u_\x8n_\x8·_\x8i_\x8p_\x8y_\x8t_\x8h_\x8o_\x8n_\x8·_\x8m_\x8a_\x8g_\x8i_\x8c_\x8·_\x8f_\x8u_\x8n_\x8c_\x8t_\x8i_\x8o_\x8n:119 the·_\x8p_\x8r_\x8u_\x8n_\x8·_\x8i_\x8p_\x8y_\x8t_\x8h_\x8o_\x8n_\x8·_\x8m_\x8a_\x8g_\x8i_\x8c_\x8·_\x8f_\x8u_\x8n_\x8c_\x8t_\x8i_\x8o_\x8n:
120 #·most·time·consuming·4·calls120 #·most·time·consuming·4·calls
121 In·[6]:·%prun·-l·4·df.apply(lambda·x:·integrate_f(x["a"],·x["b"],·x["N"]),121 In·[6]:·%prun·-l·4·df.apply(lambda·x:·integrate_f(x["a"],·x["b"],·x["N"]),
122 axis=1)··#·noqa·E999122 axis=1)··#·noqa·E999
123 ·········605946·function·calls·(605928·primitive·calls)·in·0.158·seconds123 ·········605946·function·calls·(605928·primitive·calls)·in·0.156·seconds
  
124 ···Ordered·by:·internal·time124 ···Ordered·by:·internal·time
125 ···List·reduced·from·159·to·4·due·to·restriction·<4>125 ···List·reduced·from·159·to·4·due·to·restriction·<4>
  
126 ···ncalls··tottime··percall··cumtime··percall·filename:lineno(function)126 ···ncalls··tottime··percall··cumtime··percall·filename:lineno(function)
127 ·····1000····0.092····0.000····0.137····0.000·<ipython-input-4-c2a74e076cf0>:1127 ·····1000····0.088····0.000····0.134····0.000·<ipython-input-4-c2a74e076cf0>:1
128 (integrate_f)128 (integrate_f)
129 ···552423····0.046····0.000····0.046····0.000·<ipython-input-3-c138bdd570e3>:1129 ···552423····0.046····0.000····0.046····0.000·<ipython-input-3-c138bdd570e3>:1
130 (f)130 (f)
131 ·····3000····0.004····0.000····0.014····0.000·series.py:1095(__getitem__)131 ·····3000····0.004····0.000····0.013····0.000·series.py:1095(__getitem__)
132 ·····3000····0.002····0.000····0.006····0.000·series.py:1220(_get_value)132 ·····3000····0.002····0.000····0.006····0.000·series.py:1220(_get_value)
133 By·far·the·majority·of·time·is·spend·inside·either·integrate_f·or·f,·hence133 By·far·the·majority·of·time·is·spend·inside·either·integrate_f·or·f,·hence
134 we’ll·concentrate·our·efforts·cythonizing·these·two·functions.134 we’ll·concentrate·our·efforts·cythonizing·these·two·functions.
135 *\x8**\x8**\x8**\x8*·P\x8Pl\x8la\x8ai\x8in\x8n·C\x8Cy\x8yt\x8th\x8ho\x8on\x8n_\x8#\x8#·*\x8**\x8**\x8**\x8*135 *\x8**\x8**\x8**\x8*·P\x8Pl\x8la\x8ai\x8in\x8n·C\x8Cy\x8yt\x8th\x8ho\x8on\x8n_\x8#\x8#·*\x8**\x8**\x8**\x8*
136 First·we’re·going·to·need·to·import·the·Cython·magic·function·to·IPython:136 First·we’re·going·to·need·to·import·the·Cython·magic·function·to·IPython:
137 In·[7]:·%load_ext·Cython137 In·[7]:·%load_ext·Cython
138 Now,·let’s·simply·copy·our·functions·over·to·Cython:138 Now,·let’s·simply·copy·our·functions·over·to·Cython:
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146 ···...:·····dx·=·(b·-·a)·/·N146 ···...:·····dx·=·(b·-·a)·/·N
147 ···...:·····for·i·in·range(N):147 ···...:·····for·i·in·range(N):
148 ···...:·········s·+=·f_plain(a·+·i·*·dx)148 ···...:·········s·+=·f_plain(a·+·i·*·dx)
149 ···...:·····return·s·*·dx149 ···...:·····return·s·*·dx
150 ···...:150 ···...:
151 In·[9]:·%timeit·df.apply(lambda·x:·integrate_f_plain(x["a"],·x["b"],·x["N"]),151 In·[9]:·%timeit·df.apply(lambda·x:·integrate_f_plain(x["a"],·x["b"],·x["N"]),
152 axis=1)152 axis=1)
153 63.6·ms·+-·7.66·ms·per·loop·(mean·+-·std.·dev.·of·7·runs,·10·loops·each)153 56.7·ms·+-·341·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·10·loops·each)
154 This·has·improved·the·performance·compared·to·the·pure·Python·approach·by·one-154 This·has·improved·the·performance·compared·to·the·pure·Python·approach·by·one-
155 third.155 third.
156 *\x8**\x8**\x8**\x8*·D\x8De\x8ec\x8cl\x8la\x8ar\x8ri\x8in\x8ng\x8g·C\x8C·t\x8ty\x8yp\x8pe\x8es\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*156 *\x8**\x8**\x8**\x8*·D\x8De\x8ec\x8cl\x8la\x8ar\x8ri\x8in\x8ng\x8g·C\x8C·t\x8ty\x8yp\x8pe\x8es\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*
157 We·can·annotate·the·function·variables·and·return·types·as·well·as·use·cdef·and157 We·can·annotate·the·function·variables·and·return·types·as·well·as·use·cdef·and
158 cpdef·to·improve·performance:158 cpdef·to·improve·performance:
159 In·[10]:·%%cython159 In·[10]:·%%cython
160 ···....:·cdef·double·f_typed(double·x)·except?·-2:160 ···....:·cdef·double·f_typed(double·x)·except?·-2:
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166 ···....:·····dx·=·(b·-·a)·/·N166 ···....:·····dx·=·(b·-·a)·/·N
167 ···....:·····for·i·in·range(N):167 ···....:·····for·i·in·range(N):
168 ···....:·········s·+=·f_typed(a·+·i·*·dx)168 ···....:·········s·+=·f_typed(a·+·i·*·dx)
169 ···....:·····return·s·*·dx169 ···....:·····return·s·*·dx
170 ···....:170 ···....:
171 In·[11]:·%timeit·df.apply(lambda·x:·integrate_f_typed(x["a"],·x["b"],·x["N"]),171 In·[11]:·%timeit·df.apply(lambda·x:·integrate_f_typed(x["a"],·x["b"],·x["N"]),
172 axis=1)172 axis=1)
173 7.84·ms·+-·872·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)173 6.18·ms·+-·29.8·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)
174 Annotating·the·functions·with·C·types·yields·an·over·ten·times·performance174 Annotating·the·functions·with·C·types·yields·an·over·ten·times·performance
175 improvement·compared·to·the·original·Python·implementation.175 improvement·compared·to·the·original·Python·implementation.
176 *\x8**\x8**\x8**\x8*·U\x8Us\x8si\x8in\x8ng\x8g·n\x8nd\x8da\x8ar\x8rr\x8ra\x8ay\x8y_\x8#\x8#·*\x8**\x8**\x8**\x8*176 *\x8**\x8**\x8**\x8*·U\x8Us\x8si\x8in\x8ng\x8g·n\x8nd\x8da\x8ar\x8rr\x8ra\x8ay\x8y_\x8#\x8#·*\x8**\x8**\x8**\x8*
177 When·re-profiling,·time·is·spent·creating·a·_\x8S_\x8e_\x8r_\x8i_\x8e_\x8s·from·each·row,·and·calling177 When·re-profiling,·time·is·spent·creating·a·_\x8S_\x8e_\x8r_\x8i_\x8e_\x8s·from·each·row,·and·calling
178 __getitem__·from·both·the·index·and·the·series·(three·times·for·each·row).178 __getitem__·from·both·the·index·and·the·series·(three·times·for·each·row).
179 These·Python·function·calls·are·expensive·and·can·be·improved·by·passing·an179 These·Python·function·calls·are·expensive·and·can·be·improved·by·passing·an
180 np.ndarray.180 np.ndarray.
181 In·[12]:·%prun·-l·4·df.apply(lambda·x:·integrate_f_typed(x["a"],·x["b"],·x181 In·[12]:·%prun·-l·4·df.apply(lambda·x:·integrate_f_typed(x["a"],·x["b"],·x
182 ["N"]),·axis=1)182 ["N"]),·axis=1)
183 ·········52523·function·calls·(52505·primitive·calls)·in·0.022·seconds183 ·········52523·function·calls·(52505·primitive·calls)·in·0.020·seconds
  
184 ···Ordered·by:·internal·time184 ···Ordered·by:·internal·time
185 ···List·reduced·from·157·to·4·due·to·restriction·<4>185 ···List·reduced·from·157·to·4·due·to·restriction·<4>
  
186 ···ncalls··tottime··percall··cumtime··percall·filename:lineno(function)186 ···ncalls··tottime··percall··cumtime··percall·filename:lineno(function)
187 ·····3000····0.004····0.000····0.014····0.000·series.py:1095(__getitem__)187 ·····3000····0.003····0.000····0.012····0.000·series.py:1095(__getitem__)
188 ·····3000····0.002····0.000····0.006····0.000·series.py:1220(_get_value)188 ·····3000····0.002····0.000····0.005····0.000·series.py:1220(_get_value)
189 ····16098····0.002····0.000····0.003····0.000·{built-in·method189 ····16098····0.002····0.000····0.002····0.000·{built-in·method
190 builtins.isinstance}190 builtins.isinstance}
191 ·····3000····0.002····0.000····0.002····0.000·base.py:3777(get_loc)191 ·····3000····0.002····0.000····0.002····0.000·base.py:3777(get_loc)
192 In·[13]:·%%cython192 In·[13]:·%%cython
193 ···....:·cimport·numpy·as·np193 ···....:·cimport·numpy·as·np
194 ···....:·import·numpy·as·np194 ···....:·import·numpy·as·np
195 ···....:·cdef·double·f_typed(double·x)·except?·-2:195 ···....:·cdef·double·f_typed(double·x)·except?·-2:
196 ···....:·····return·x·*·(x·-·1)196 ···....:·····return·x·*·(x·-·1)
Offset 235, 15 lines modifiedOffset 235, 15 lines modified
235 This·implementation·creates·an·array·of·zeros·and·inserts·the·result·of235 This·implementation·creates·an·array·of·zeros·and·inserts·the·result·of
236 integrate_f_typed·applied·over·each·row.·Looping·over·an·ndarray·is·faster·in236 integrate_f_typed·applied·over·each·row.·Looping·over·an·ndarray·is·faster·in
237 Cython·than·looping·over·a·_\x8S_\x8e_\x8r_\x8i_\x8e_\x8s·object.237 Cython·than·looping·over·a·_\x8S_\x8e_\x8r_\x8i_\x8e_\x8s·object.
238 Since·apply_integrate_f·is·typed·to·accept·an·np.ndarray,·_\x8S_\x8e_\x8r_\x8i_\x8e_\x8s_\x8._\x8t_\x8o_\x8__\x8n_\x8u_\x8m_\x8p_\x8y_\x8(_\x8)238 Since·apply_integrate_f·is·typed·to·accept·an·np.ndarray,·_\x8S_\x8e_\x8r_\x8i_\x8e_\x8s_\x8._\x8t_\x8o_\x8__\x8n_\x8u_\x8m_\x8p_\x8y_\x8(_\x8)
239 calls·are·needed·to·utilize·this·function.239 calls·are·needed·to·utilize·this·function.
240 In·[14]:·%timeit·apply_integrate_f(df["a"].to_numpy(),·df["b"].to_numpy(),·df240 In·[14]:·%timeit·apply_integrate_f(df["a"].to_numpy(),·df["b"].to_numpy(),·df
241 ["N"].to_numpy())241 ["N"].to_numpy())
242 1e+03·us·+-·152·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·1,000·loops·each)242 908·us·+-·4.59·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·1,000·loops·each)
243 Performance·has·improved·from·the·prior·implementation·by·almost·ten·times.243 Performance·has·improved·from·the·prior·implementation·by·almost·ten·times.
244 *\x8**\x8**\x8**\x8*·D\x8Di\x8is\x8sa\x8ab\x8bl\x8li\x8in\x8ng\x8g·c\x8co\x8om\x8mp\x8pi\x8il\x8le\x8er\x8r·d\x8di\x8ir\x8re\x8ec\x8ct\x8ti\x8iv\x8ve\x8es\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*244 *\x8**\x8**\x8**\x8*·D\x8Di\x8is\x8sa\x8ab\x8bl\x8li\x8in\x8ng\x8g·c\x8co\x8om\x8mp\x8pi\x8il\x8le\x8er\x8r·d\x8di\x8ir\x8re\x8ec\x8ct\x8ti\x8iv\x8ve\x8es\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*
245 The·majority·of·the·time·is·now·spent·in·apply_integrate_f.·Disabling·Cython’s245 The·majority·of·the·time·is·now·spent·in·apply_integrate_f.·Disabling·Cython’s
246 boundscheck·and·wraparound·checks·can·yield·more·performance.246 boundscheck·and·wraparound·checks·can·yield·more·performance.
247 In·[15]:·%prun·-l·4·apply_integrate_f(df["a"].to_numpy(),·df["b"].to_numpy(),247 In·[15]:·%prun·-l·4·apply_integrate_f(df["a"].to_numpy(),·df["b"].to_numpy(),
248 df["N"].to_numpy())248 df["N"].to_numpy())
249 ·········78·function·calls·in·0.001·seconds249 ·········78·function·calls·in·0.001·seconds
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298 /usr/lib/x86_64-linux-gnu/python3-numpy/numpy/_core/include/numpy/298 /usr/lib/x86_64-linux-gnu/python3-numpy/numpy/_core/include/numpy/
299 npy_1_7_deprecated_api.h:17:2:·warning:·#warning·"Using·deprecated·NumPy·API,299 npy_1_7_deprecated_api.h:17:2:·warning:·#warning·"Using·deprecated·NumPy·API,
300 disable·it·with·"·"#define·NPY_NO_DEPRECATED_API·NPY_1_7_API_VERSION"·[-Wcpp]300 disable·it·with·"·"#define·NPY_NO_DEPRECATED_API·NPY_1_7_API_VERSION"·[-Wcpp]
301 ···17·|·#warning·"Using·deprecated·NumPy·API,·disable·it·with·"·\301 ···17·|·#warning·"Using·deprecated·NumPy·API,·disable·it·with·"·\
302 ······|··^~~~~~~302 ······|··^~~~~~~
303 In·[17]:·%timeit·apply_integrate_f_wrap(df["a"].to_numpy(),·df["b"].to_numpy(),303 In·[17]:·%timeit·apply_integrate_f_wrap(df["a"].to_numpy(),·df["b"].to_numpy(),
304 df["N"].to_numpy())304 df["N"].to_numpy())
305 755·us·+-·107·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·1,000·loops·each)305 685·us·+-·4.33·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·1,000·loops·each)
306 However,·a·loop·indexer·i·accessing·an·invalid·location·in·an·array·would·cause306 However,·a·loop·indexer·i·accessing·an·invalid·location·in·an·array·would·cause
307 a·segfault·because·memory·access·isn’t·checked.·For·more·about·boundscheck·and307 a·segfault·because·memory·access·isn’t·checked.·For·more·about·boundscheck·and
308 wraparound,·see·the·Cython·docs·on·_\x8c_\x8o_\x8m_\x8p_\x8i_\x8l_\x8e_\x8r_\x8·_\x8d_\x8i_\x8r_\x8e_\x8c_\x8t_\x8i_\x8v_\x8e_\x8s.308 wraparound,·see·the·Cython·docs·on·_\x8c_\x8o_\x8m_\x8p_\x8i_\x8l_\x8e_\x8r_\x8·_\x8d_\x8i_\x8r_\x8e_\x8c_\x8t_\x8i_\x8v_\x8e_\x8s.
309 *\x8**\x8**\x8**\x8**\x8*·N\x8Nu\x8um\x8mb\x8ba\x8a·(\x8(J\x8JI\x8IT\x8T·c\x8co\x8om\x8mp\x8pi\x8il\x8la\x8at\x8ti\x8io\x8on\x8n)\x8)_\x8#\x8#·*\x8**\x8**\x8**\x8**\x8*309 *\x8**\x8**\x8**\x8**\x8*·N\x8Nu\x8um\x8mb\x8ba\x8a·(\x8(J\x8JI\x8IT\x8T·c\x8co\x8om\x8mp\x8pi\x8il\x8la\x8at\x8ti\x8io\x8on\x8n)\x8)_\x8#\x8#·*\x8**\x8**\x8**\x8**\x8*
310 An·alternative·to·statically·compiling·Cython·code·is·to·use·a·dynamic·just-in-310 An·alternative·to·statically·compiling·Cython·code·is·to·use·a·dynamic·just-in-
311 time·(JIT)·compiler·with·_\x8N_\x8u_\x8m_\x8b_\x8a.311 time·(JIT)·compiler·with·_\x8N_\x8u_\x8m_\x8b_\x8a.
312 Numba·allows·you·to·write·a·pure·Python·function·which·can·be·JIT·compiled·to312 Numba·allows·you·to·write·a·pure·Python·function·which·can·be·JIT·compiled·to
Offset 609, 17 lines modifiedOffset 609, 17 lines modified
609 The·'numexpr'·engine·is·the·more·performant·engine·that·can·yield·performance609 The·'numexpr'·engine·is·the·more·performant·engine·that·can·yield·performance
610 improvements·compared·to·standard·Python·syntax·for·large·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e.·This610 improvements·compared·to·standard·Python·syntax·for·large·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e.·This
611 engine·requires·the·optional·dependency·numexpr·to·be·installed.611 engine·requires·the·optional·dependency·numexpr·to·be·installed.
612 The·'python'·engine·is·generally·n\x8no\x8ot\x8t·useful·except·for·testing·other·evaluation612 The·'python'·engine·is·generally·n\x8no\x8ot\x8t·useful·except·for·testing·other·evaluation
613 engines·against·it.·You·will·achieve·n\x8no\x8o·performance·benefits·using·_\x8e_\x8v_\x8a_\x8l_\x8(_\x8)·with613 engines·against·it.·You·will·achieve·n\x8no\x8o·performance·benefits·using·_\x8e_\x8v_\x8a_\x8l_\x8(_\x8)·with
614 engine='python'·and·may·incur·a·performance·hit.614 engine='python'·and·may·incur·a·performance·hit.
615 In·[40]:·%timeit·df1·+·df2·+·df3·+·df4615 In·[40]:·%timeit·df1·+·df2·+·df3·+·df4
616 7.93·ms·+-·397·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)616 4.84·ms·+-·53.2·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)
617 In·[41]:·%timeit·pd.eval("df1·+·df2·+·df3·+·df4",·engine="python")617 In·[41]:·%timeit·pd.eval("df1·+·df2·+·df3·+·df4",·engine="python")
618 9.77·ms·+-·381·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)618 5.72·ms·+-·54.6·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)
619 *\x8**\x8**\x8**\x8*·T\x8Th\x8he\x8e·_\x8D\x8D_\x8a\x8a_\x8t\x8t_\x8a\x8a_\x8F\x8F_\x8r\x8r_\x8a\x8a_\x8m\x8m_\x8e\x8e_\x8.\x8._\x8e\x8e_\x8v\x8v_\x8a\x8a_\x8l\x8l_\x8(\x8(_\x8)\x8)·m\x8me\x8et\x8th\x8ho\x8od\x8d_\x8#\x8#·*\x8**\x8**\x8**\x8*619 *\x8**\x8**\x8**\x8*·T\x8Th\x8he\x8e·_\x8D\x8D_\x8a\x8a_\x8t\x8t_\x8a\x8a_\x8F\x8F_\x8r\x8r_\x8a\x8a_\x8m\x8m_\x8e\x8e_\x8.\x8._\x8e\x8e_\x8v\x8v_\x8a\x8a_\x8l\x8l_\x8(\x8(_\x8)\x8)·m\x8me\x8et\x8th\x8ho\x8od\x8d_\x8#\x8#·*\x8**\x8**\x8**\x8*
620 In·addition·to·the·top·level·_\x8p_\x8a_\x8n_\x8d_\x8a_\x8s_\x8._\x8e_\x8v_\x8a_\x8l_\x8(_\x8)·function·you·can·also·evaluate·an620 In·addition·to·the·top·level·_\x8p_\x8a_\x8n_\x8d_\x8a_\x8s_\x8._\x8e_\x8v_\x8a_\x8l_\x8(_\x8)·function·you·can·also·evaluate·an
621 expression·in·the·“context”·of·a·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e.621 expression·in·the·“context”·of·a·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e.
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1086 <span·class="gp">···....:·</span><span·class="n">files</span>·<span·class="o">=</span>·<span·class="n">pathlib</span><span·class="o">.</span><span·class="n">Path</span><span·class="p">(</span><span·class="s2">&quot;data/timeseries/&quot;</span><span·class="p">)</span><span·class="o">.</span><span·class="n">glob</span><span·class="p">(</span><span·class="s2">&quot;ts*.parquet&quot;</span><span·class="p">)</span>1086 <span·class="gp">···....:·</span><span·class="n">files</span>·<span·class="o">=</span>·<span·class="n">pathlib</span><span·class="o">.</span><span·class="n">Path</span><span·class="p">(</span><span·class="s2">&quot;data/timeseries/&quot;</span><span·class="p">)</span><span·class="o">.</span><span·class="n">glob</span><span·class="p">(</span><span·class="s2">&quot;ts*.parquet&quot;</span><span·class="p">)</span>
1087 <span·class="gp">···....:·</span><span·class="n">counts</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">Series</span><span·class="p">(</span><span·class="n">dtype</span><span·class="o">=</span><span·class="nb">int</span><span·class="p">)</span>1087 <span·class="gp">···....:·</span><span·class="n">counts</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">Series</span><span·class="p">(</span><span·class="n">dtype</span><span·class="o">=</span><span·class="nb">int</span><span·class="p">)</span>
1088 <span·class="gp">···....:·</span><span·class="k">for</span>·<span·class="n">path</span>·<span·class="ow">in</span>·<span·class="n">files</span><span·class="p">:</span>1088 <span·class="gp">···....:·</span><span·class="k">for</span>·<span·class="n">path</span>·<span·class="ow">in</span>·<span·class="n">files</span><span·class="p">:</span>
1089 <span·class="gp">···....:·</span>····<span·class="n">df</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">read_parquet</span><span·class="p">(</span><span·class="n">path</span><span·class="p">)</span>1089 <span·class="gp">···....:·</span>····<span·class="n">df</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">read_parquet</span><span·class="p">(</span><span·class="n">path</span><span·class="p">)</span>
1090 <span·class="gp">···....:·</span>····<span·class="n">counts</span>·<span·class="o">=</span>·<span·class="n">counts</span><span·class="o">.</span><span·class="n">add</span><span·class="p">(</span><span·class="n">df</span><span·class="p">[</span><span·class="s2">&quot;name&quot;</span><span·class="p">]</span><span·class="o">.</span><span·class="n">value_counts</span><span·class="p">(),</span>·<span·class="n">fill_value</span><span·class="o">=</span><span·class="mi">0</span><span·class="p">)</span>1090 <span·class="gp">···....:·</span>····<span·class="n">counts</span>·<span·class="o">=</span>·<span·class="n">counts</span><span·class="o">.</span><span·class="n">add</span><span·class="p">(</span><span·class="n">df</span><span·class="p">[</span><span·class="s2">&quot;name&quot;</span><span·class="p">]</span><span·class="o">.</span><span·class="n">value_counts</span><span·class="p">(),</span>·<span·class="n">fill_value</span><span·class="o">=</span><span·class="mi">0</span><span·class="p">)</span>
1091 <span·class="gp">···....:·</span><span·class="n">counts</span><span·class="o">.</span><span·class="n">astype</span><span·class="p">(</span><span·class="nb">int</span><span·class="p">)</span>1091 <span·class="gp">···....:·</span><span·class="n">counts</span><span·class="o">.</span><span·class="n">astype</span><span·class="p">(</span><span·class="nb">int</span><span·class="p">)</span>
1092 <span·class="gp">···....:·</span>1092 <span·class="gp">···....:·</span>
1093 <span·class="go">CPU·times:·user·224·us,·sys:·271·us,·total:·495·us</span>1093 <span·class="go">CPU·times:·user·304·us,·sys:·113·us,·total:·417·us</span>
1094 <span·class="go">Wall·time:·504·us</span>1094 <span·class="go">Wall·time:·422·us</span>
1095 <span·class="gh">Out[32]:·</span><span·class="go">Series([],·dtype:·int64)</span>1095 <span·class="gh">Out[32]:·</span><span·class="go">Series([],·dtype:·int64)</span>
1096 </pre></div>1096 </pre></div>
1097 </div>1097 </div>
1098 <p>Some·readers,·like·<a·class="reference·internal"·href="../reference/api/pandas.read_csv.html#pandas.read_csv"·title="pandas.read_csv"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">pandas.read_csv()</span></code></a>,·offer·parameters·to·control·the1098 <p>Some·readers,·like·<a·class="reference·internal"·href="../reference/api/pandas.read_csv.html#pandas.read_csv"·title="pandas.read_csv"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">pandas.read_csv()</span></code></a>,·offer·parameters·to·control·the
1099 <code·class="docutils·literal·notranslate"><span·class="pre">chunksize</span></code>·when·reading·a·single·file.</p>1099 <code·class="docutils·literal·notranslate"><span·class="pre">chunksize</span></code>·when·reading·a·single·file.</p>
1100 <p>Manually·chunking·is·an·OK·option·for·workflows·that·don’t1100 <p>Manually·chunking·is·an·OK·option·for·workflows·that·don’t
1101 require·too·sophisticated·of·operations.·Some·operations,·like·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.groupby.html#pandas.DataFrame.groupby"·title="pandas.DataFrame.groupby"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">pandas.DataFrame.groupby()</span></code></a>,·are1101 require·too·sophisticated·of·operations.·Some·operations,·like·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.groupby.html#pandas.DataFrame.groupby"·title="pandas.DataFrame.groupby"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">pandas.DataFrame.groupby()</span></code></a>,·are
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644 ···....:·files·=·pathlib.Path("data/timeseries/").glob("ts*.parquet")644 ···....:·files·=·pathlib.Path("data/timeseries/").glob("ts*.parquet")
645 ···....:·counts·=·pd.Series(dtype=int)645 ···....:·counts·=·pd.Series(dtype=int)
646 ···....:·for·path·in·files:646 ···....:·for·path·in·files:
647 ···....:·····df·=·pd.read_parquet(path)647 ···....:·····df·=·pd.read_parquet(path)
648 ···....:·····counts·=·counts.add(df["name"].value_counts(),·fill_value=0)648 ···....:·····counts·=·counts.add(df["name"].value_counts(),·fill_value=0)
649 ···....:·counts.astype(int)649 ···....:·counts.astype(int)
650 ···....:650 ···....:
651 CPU·times:·user·224·us,·sys:·271·us,·total:·495·us651 CPU·times:·user·304·us,·sys:·113·us,·total:·417·us
652 Wall·time:·504·us652 Wall·time:·422·us
653 Out[32]:·Series([],·dtype:·int64)653 Out[32]:·Series([],·dtype:·int64)
654 Some·readers,·like·_\x8p_\x8a_\x8n_\x8d_\x8a_\x8s_\x8._\x8r_\x8e_\x8a_\x8d_\x8__\x8c_\x8s_\x8v_\x8(_\x8),·offer·parameters·to·control·the·chunksize654 Some·readers,·like·_\x8p_\x8a_\x8n_\x8d_\x8a_\x8s_\x8._\x8r_\x8e_\x8a_\x8d_\x8__\x8c_\x8s_\x8v_\x8(_\x8),·offer·parameters·to·control·the·chunksize
655 when·reading·a·single·file.655 when·reading·a·single·file.
656 Manually·chunking·is·an·OK·option·for·workflows·that·don’t·require·too656 Manually·chunking·is·an·OK·option·for·workflows·that·don’t·require·too
657 sophisticated·of·operations.·Some·operations,·like·_\x8p_\x8a_\x8n_\x8d_\x8a_\x8s_\x8._\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8g_\x8r_\x8o_\x8u_\x8p_\x8b_\x8y_\x8(_\x8),657 sophisticated·of·operations.·Some·operations,·like·_\x8p_\x8a_\x8n_\x8d_\x8a_\x8s_\x8._\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8g_\x8r_\x8o_\x8u_\x8p_\x8b_\x8y_\x8(_\x8),
658 are·much·harder·to·do·chunkwise.·In·these·cases,·you·may·be·better·switching·to658 are·much·harder·to·do·chunkwise.·In·these·cases,·you·may·be·better·switching·to
659 a·different·library·that·implements·these·out-of-core·algorithms·for·you.659 a·different·library·that·implements·these·out-of-core·algorithms·for·you.
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50 ················},50 ················},
51 ················"nbsphinx":·"hidden"51 ················"nbsphinx":·"hidden"
52 ············},52 ············},
53 ············"outputs":·[],53 ············"outputs":·[],
54 ············"source":·[54 ············"source":·[
55 ················"import·matplotlib.pyplot\n",55 ················"import·matplotlib.pyplot\n",
56 ················"#·We·have·this·here·to·trigger·matplotlib's·font·cache·stuff.\n",56 ················"#·We·have·this·here·to·trigger·matplotlib's·font·cache·stuff.\n",
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82 ············"metadata":·{82 ············"metadata":·{
83 ················"execution":·{83 ················"execution":·{
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90 ············"outputs":·[],90 ············"outputs":·[],
91 ············"source":·[91 ············"source":·[
92 ················"import·pandas·as·pd\n",92 ················"import·pandas·as·pd\n",
93 ················"import·numpy·as·np\n",93 ················"import·numpy·as·np\n",
94 ················"import·matplotlib·as·mpl\n"94 ················"import·matplotlib·as·mpl\n"
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105 ····················"shell.execute_reply":·"2026-09-06T23:29:27.128376Z"105 ····················"shell.execute_reply":·"2025-08-04T17:50:21.978941Z"
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107 ················"nbsphinx":·"hidden"107 ················"nbsphinx":·"hidden"
108 ············},108 ············},
109 ············"outputs":·[],109 ············"outputs":·[],
110 ············"source":·[110 ············"source":·[
111 ················"#·For·reproducibility·-·this·doesn't·respect·uuid_len·or·positionally-passed·uuid·but·the·places·here·that·use·that·coincidentally·bypass·this·anyway\n",111 ················"#·For·reproducibility·-·this·doesn't·respect·uuid_len·or·positionally-passed·uuid·but·the·places·here·that·use·that·coincidentally·bypass·this·anyway\n",
112 ················"from·pandas.io.formats.style·import·Styler\n",112 ················"from·pandas.io.formats.style·import·Styler\n",
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1613 <span·class="gp">In·[94]:·</span><span·class="n">df1</span><span·class="p">,</span>·<span·class="n">df2</span><span·class="p">,</span>·<span·class="n">df3</span><span·class="p">,</span>·<span·class="n">df4</span>·<span·class="o">=</span>·<span·class="p">[</span><span·class="n">pd</span><span·class="o">.</span><span·class="n">DataFrame</span><span·class="p">(</span><span·class="n">np</span><span·class="o">.</span><span·class="n">random</span><span·class="o">.</span><span·class="n">randn</span><span·class="p">(</span><span·class="n">nrows</span><span·class="p">,</span>·<span·class="n">ncols</span><span·class="p">))</span>1613 <span·class="gp">In·[94]:·</span><span·class="n">df1</span><span·class="p">,</span>·<span·class="n">df2</span><span·class="p">,</span>·<span·class="n">df3</span><span·class="p">,</span>·<span·class="n">df4</span>·<span·class="o">=</span>·<span·class="p">[</span><span·class="n">pd</span><span·class="o">.</span><span·class="n">DataFrame</span><span·class="p">(</span><span·class="n">np</span><span·class="o">.</span><span·class="n">random</span><span·class="o">.</span><span·class="n">randn</span><span·class="p">(</span><span·class="n">nrows</span><span·class="p">,</span>·<span·class="n">ncols</span><span·class="p">))</span>
1614 <span·class="gp">···....:·</span>······················<span·class="k">for</span>·<span·class="n">_</span>·<span·class="ow">in</span>·<span·class="nb">range</span><span·class="p">(</span><span·class="mi">4</span><span·class="p">)]</span>1614 <span·class="gp">···....:·</span>······················<span·class="k">for</span>·<span·class="n">_</span>·<span·class="ow">in</span>·<span·class="nb">range</span><span·class="p">(</span><span·class="mi">4</span><span·class="p">)]</span>
1615 <span·class="gp">···....:·</span>1615 <span·class="gp">···....:·</span>
1616 </pre></div>1616 </pre></div>
1617 </div>1617 </div>
1618 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="go">#·eval·with·NumExpr·backend</span>1618 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="go">#·eval·with·NumExpr·backend</span>
1619 <span·class="gp">In·[95]:·</span><span·class="o">%</span><span·class="k">timeit</span>·pd.eval(&#39;df1·+·df2·+·df3·+·df4&#39;)1619 <span·class="gp">In·[95]:·</span><span·class="o">%</span><span·class="k">timeit</span>·pd.eval(&#39;df1·+·df2·+·df3·+·df4&#39;)
1620 <span·class="go">4.78·ms·+-·98·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)</span>1620 <span·class="go">2.16·ms·+-·223·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·1,000·loops·each)</span>
1621 </pre></div>1621 </pre></div>
1622 </div>1622 </div>
1623 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="go">#·pure·Python·evaluation</span>1623 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="go">#·pure·Python·evaluation</span>
1624 <span·class="gp">In·[96]:·</span><span·class="o">%</span><span·class="k">timeit</span>·df1·+·df2·+·df3·+·df41624 <span·class="gp">In·[96]:·</span><span·class="o">%</span><span·class="k">timeit</span>·df1·+·df2·+·df3·+·df4
1625 <span·class="go">5·ms·+-·186·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)</span>1625 <span·class="go">2.57·ms·+-·61.9·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)</span>
1626 </pre></div>1626 </pre></div>
1627 </div>1627 </div>
1628 <p>For·more·details,·see·the·<a·class="reference·internal"·href="../user_guide/enhancingperf.html#enhancingperf-eval"><span·class="std·std-ref">the·docs</span></a></p>1628 <p>For·more·details,·see·the·<a·class="reference·internal"·href="../user_guide/enhancingperf.html#enhancingperf-eval"><span·class="std·std-ref">the·docs</span></a></p>
1629 </li>1629 </li>
1630 <li><p>Similar·to·<code·class="docutils·literal·notranslate"><span·class="pre">pandas.eval</span></code>,·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.html#pandas.DataFrame"·title="pandas.DataFrame"><code·class="xref·py·py-class·docutils·literal·notranslate"><span·class="pre">DataFrame</span></code></a>·has·a·new1630 <li><p>Similar·to·<code·class="docutils·literal·notranslate"><span·class="pre">pandas.eval</span></code>,·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.html#pandas.DataFrame"·title="pandas.DataFrame"><code·class="xref·py·py-class·docutils·literal·notranslate"><span·class="pre">DataFrame</span></code></a>·has·a·new
1631 <code·class="docutils·literal·notranslate"><span·class="pre">DataFrame.eval</span></code>·method·that·evaluates·an·expression·in·the·context·of1631 <code·class="docutils·literal·notranslate"><span·class="pre">DataFrame.eval</span></code>·method·that·evaluates·an·expression·in·the·context·of
1632 the·<code·class="docutils·literal·notranslate"><span·class="pre">DataFrame</span></code>.·For·example,</p>1632 the·<code·class="docutils·literal·notranslate"><span·class="pre">DataFrame</span></code>.·For·example,</p>
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965 ······In·[94]:·df1,·df2,·df3,·df4·=·[pd.DataFrame(np.random.randn(nrows,965 ······In·[94]:·df1,·df2,·df3,·df4·=·[pd.DataFrame(np.random.randn(nrows,
966 ······ncols))966 ······ncols))
967 ·········....:·······················for·_·in·range(4)]967 ·········....:·······················for·_·in·range(4)]
968 ·········....:968 ·········....:
969 ······#·eval·with·NumExpr·backend969 ······#·eval·with·NumExpr·backend
970 ······In·[95]:·%timeit·pd.eval('df1·+·df2·+·df3·+·df4')970 ······In·[95]:·%timeit·pd.eval('df1·+·df2·+·df3·+·df4')
971 ······4.78·ms·+-·98·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)971 ······2.16·ms·+-·223·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·1,000·loops
 972 ······each)
972 ······#·pure·Python·evaluation973 ······#·pure·Python·evaluation
973 ······In·[96]:·%timeit·df1·+·df2·+·df3·+·df4974 ······In·[96]:·%timeit·df1·+·df2·+·df3·+·df4
974 ······5·ms·+-·186·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)975 ······2.57·ms·+-·61.9·us·per·loop·(mean·+-·std.·dev.·of·7·runs,·100·loops·each)
975 ······For·more·details,·see·the·_\x8t_\x8h_\x8e_\x8·_\x8d_\x8o_\x8c_\x8s976 ······For·more·details,·see·the·_\x8t_\x8h_\x8e_\x8·_\x8d_\x8o_\x8c_\x8s
976 ····*·Similar·to·pandas.eval,·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e·has·a·new·DataFrame.eval·method·that977 ····*·Similar·to·pandas.eval,·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e·has·a·new·DataFrame.eval·method·that
977 ······evaluates·an·expression·in·the·context·of·the·DataFrame.·For·example,978 ······evaluates·an·expression·in·the·context·of·the·DataFrame.·For·example,
978 ······In·[97]:·df·=·pd.DataFrame(np.random.randn(10,·2),·columns=['a',·'b'])979 ······In·[97]:·df·=·pd.DataFrame(np.random.randn(10,·2),·columns=['a',·'b'])
  
979 ······In·[98]:·df.eval('a·+·b')980 ······In·[98]:·df.eval('a·+·b')
980 ······Out[98]:981 ······Out[98]:
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1458 </div>1458 </div>
1459 <div·class="admonition·note">1459 <div·class="admonition·note">
1460 <p·class="admonition-title">Note</p>1460 <p·class="admonition-title">Note</p>
1461 <p>If·you·want·to·perform·calculations·based·on·today’s·date,·use·<code·class="docutils·literal·notranslate"><span·class="pre">Timestamp.now()</span></code>·and·<code·class="docutils·literal·notranslate"><span·class="pre">pandas.tseries.offsets</span></code>.</p>1461 <p>If·you·want·to·perform·calculations·based·on·today’s·date,·use·<code·class="docutils·literal·notranslate"><span·class="pre">Timestamp.now()</span></code>·and·<code·class="docutils·literal·notranslate"><span·class="pre">pandas.tseries.offsets</span></code>.</p>
1462 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[65]:·</span><span·class="kn">import</span>·<span·class="nn">pandas.tseries.offsets</span>·<span·class="k">as</span>·<span·class="nn">offsets</span>1462 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[65]:·</span><span·class="kn">import</span>·<span·class="nn">pandas.tseries.offsets</span>·<span·class="k">as</span>·<span·class="nn">offsets</span>
  
1463 <span·class="gp">In·[66]:·</span><span·class="n">pd</span><span·class="o">.</span><span·class="n">Timestamp</span><span·class="o">.</span><span·class="n">now</span><span·class="p">()</span>1463 <span·class="gp">In·[66]:·</span><span·class="n">pd</span><span·class="o">.</span><span·class="n">Timestamp</span><span·class="o">.</span><span·class="n">now</span><span·class="p">()</span>
1464 <span·class="gh">Out[66]:·</span><span·class="go">Timestamp(&#39;2026-09-06·11:30:08.914159&#39;)</span>1464 <span·class="gh">Out[66]:·</span><span·class="go">Timestamp(&#39;2025-08-05·07:51:03.011691&#39;)</span>
  
1465 <span·class="gp">In·[67]:·</span><span·class="n">pd</span><span·class="o">.</span><span·class="n">Timestamp</span><span·class="o">.</span><span·class="n">now</span><span·class="p">()</span>·<span·class="o">+</span>·<span·class="n">offsets</span><span·class="o">.</span><span·class="n">DateOffset</span><span·class="p">(</span><span·class="n">years</span><span·class="o">=</span><span·class="mi">1</span><span·class="p">)</span>1465 <span·class="gp">In·[67]:·</span><span·class="n">pd</span><span·class="o">.</span><span·class="n">Timestamp</span><span·class="o">.</span><span·class="n">now</span><span·class="p">()</span>·<span·class="o">+</span>·<span·class="n">offsets</span><span·class="o">.</span><span·class="n">DateOffset</span><span·class="p">(</span><span·class="n">years</span><span·class="o">=</span><span·class="mi">1</span><span·class="p">)</span>
1466 <span·class="gh">Out[67]:·</span><span·class="go">Timestamp(&#39;2027-09-06·11:30:08.915438&#39;)</span>1466 <span·class="gh">Out[67]:·</span><span·class="go">Timestamp(&#39;2026-08-05·07:51:03.012883&#39;)</span>
1467 </pre></div>1467 </pre></div>
1468 </div>1468 </div>
1469 </div>1469 </div>
1470 </section>1470 </section>
1471 </section>1471 </section>
1472 <section·id="changes-to-index-comparisons">1472 <section·id="changes-to-index-comparisons">
1473 <h3>Changes·to·Index·comparisons<a·class="headerlink"·href="#changes-to-index-comparisons"·title="Link·to·this·heading">#</a></h3>1473 <h3>Changes·to·Index·comparisons<a·class="headerlink"·href="#changes-to-index-comparisons"·title="Link·to·this·heading">#</a></h3>
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814 freq=None)814 freq=None)
815 Note815 Note
816 If·you·want·to·perform·calculations·based·on·today’s·date,·use·Timestamp.now()816 If·you·want·to·perform·calculations·based·on·today’s·date,·use·Timestamp.now()
817 and·pandas.tseries.offsets.817 and·pandas.tseries.offsets.
818 In·[65]:·import·pandas.tseries.offsets·as·offsets818 In·[65]:·import·pandas.tseries.offsets·as·offsets
  
819 In·[66]:·pd.Timestamp.now()819 In·[66]:·pd.Timestamp.now()
820 Out[66]:·Timestamp('2026-09-06·11:30:08.914159')820 Out[66]:·Timestamp('2025-08-05·07:51:03.011691')
  
821 In·[67]:·pd.Timestamp.now()·+·offsets.DateOffset(years=1)821 In·[67]:·pd.Timestamp.now()·+·offsets.DateOffset(years=1)
822 Out[67]:·Timestamp('2027-09-06·11:30:08.915438')822 Out[67]:·Timestamp('2026-08-05·07:51:03.012883')
823 *\x8**\x8**\x8**\x8*·C\x8Ch\x8ha\x8an\x8ng\x8ge\x8es\x8s·t\x8to\x8o·I\x8In\x8nd\x8de\x8ex\x8x·c\x8co\x8om\x8mp\x8pa\x8ar\x8ri\x8is\x8so\x8on\x8ns\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*823 *\x8**\x8**\x8**\x8*·C\x8Ch\x8ha\x8an\x8ng\x8ge\x8es\x8s·t\x8to\x8o·I\x8In\x8nd\x8de\x8ex\x8x·c\x8co\x8om\x8mp\x8pa\x8ar\x8ri\x8is\x8so\x8on\x8ns\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*
824 Operator·equal·on·Index·should·behavior·similarly·to·Series·(_\x8G_\x8H_\x8·_\x89_\x89_\x84_\x87,·_\x8G_\x8H_\x8·_\x81_\x80_\x86_\x83_\x87)824 Operator·equal·on·Index·should·behavior·similarly·to·Series·(_\x8G_\x8H_\x8·_\x89_\x89_\x84_\x87,·_\x8G_\x8H_\x8·_\x81_\x80_\x86_\x83_\x87)
825 Starting·in·v0.17.0,·comparing·Index·objects·of·different·lengths·will·raise·a825 Starting·in·v0.17.0,·comparing·Index·objects·of·different·lengths·will·raise·a
826 ValueError.·This·is·to·be·consistent·with·the·behavior·of·Series.826 ValueError.·This·is·to·be·consistent·with·the·behavior·of·Series.
827 Previous·behavior:827 Previous·behavior:
828 In·[2]:·pd.Index([1,·2,·3])·==·pd.Index([1,·4,·5])828 In·[2]:·pd.Index([1,·2,·3])·==·pd.Index([1,·4,·5])
829 Out[2]:·array([·True,·False,·False],·dtype=bool)829 Out[2]:·array([·True,·False,·False],·dtype=bool)
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757 <span·class="gp">···...:·</span>757 <span·class="gp">···...:·</span>
  
758 <span·class="gp">In·[2]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">dtypes</span>758 <span·class="gp">In·[2]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">dtypes</span>
759 <span·class="gh">Out[2]:·</span>759 <span·class="gh">Out[2]:·</span>
760 <span·class="go">A·····int64</span>760 <span·class="go">A·····int64</span>
761 <span·class="go">B····object</span>761 <span·class="go">B····object</span>
762 <span·class="go">C····object</span>762 <span·class="go">C····object</span>
763 <span·class="go">Length:·3,·dtype:·object</span>763 <span·class="go">dtype:·object</span>
  
764 <span·class="gp">In·[3]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">infer_objects</span><span·class="p">()</span><span·class="o">.</span><span·class="n">dtypes</span>764 <span·class="gp">In·[3]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">infer_objects</span><span·class="p">()</span><span·class="o">.</span><span·class="n">dtypes</span>
765 <span·class="gh">Out[3]:·</span>765 <span·class="gh">Out[3]:·</span>
766 <span·class="go">A·····int64</span>766 <span·class="go">A·····int64</span>
767 <span·class="go">B·····int64</span>767 <span·class="go">B·····int64</span>
768 <span·class="go">C····object</span>768 <span·class="go">C····object</span>
769 <span·class="go">Length:·3,·dtype:·object</span>769 <span·class="go">dtype:·object</span>
770 </pre></div>770 </pre></div>
771 </div>771 </div>
772 <p>Note·that·column·<code·class="docutils·literal·notranslate"><span·class="pre">'C'</span></code>·was·not·converted·-·only·scalar·numeric·types772 <p>Note·that·column·<code·class="docutils·literal·notranslate"><span·class="pre">'C'</span></code>·was·not·converted·-·only·scalar·numeric·types
773 will·be·converted·to·a·new·type.··Other·types·of·conversion·should·be·accomplished773 will·be·converted·to·a·new·type.··Other·types·of·conversion·should·be·accomplished
774 using·the·<a·class="reference·internal"·href="../reference/api/pandas.to_numeric.html#pandas.to_numeric"·title="pandas.to_numeric"><code·class="xref·py·py-func·docutils·literal·notranslate"><span·class="pre">to_numeric()</span></code></a>·function·(or·<a·class="reference·internal"·href="../reference/api/pandas.to_datetime.html#pandas.to_datetime"·title="pandas.to_datetime"><code·class="xref·py·py-func·docutils·literal·notranslate"><span·class="pre">to_datetime()</span></code></a>,·<a·class="reference·internal"·href="../reference/api/pandas.to_timedelta.html#pandas.to_timedelta"·title="pandas.to_timedelta"><code·class="xref·py·py-func·docutils·literal·notranslate"><span·class="pre">to_timedelta()</span></code></a>).</p>774 using·the·<a·class="reference·internal"·href="../reference/api/pandas.to_numeric.html#pandas.to_numeric"·title="pandas.to_numeric"><code·class="xref·py·py-func·docutils·literal·notranslate"><span·class="pre">to_numeric()</span></code></a>·function·(or·<a·class="reference·internal"·href="../reference/api/pandas.to_datetime.html#pandas.to_datetime"·title="pandas.to_datetime"><code·class="xref·py·py-func·docutils·literal·notranslate"><span·class="pre">to_datetime()</span></code></a>,·<a·class="reference·internal"·href="../reference/api/pandas.to_timedelta.html#pandas.to_timedelta"·title="pandas.to_timedelta"><code·class="xref·py·py-func·docutils·literal·notranslate"><span·class="pre">to_timedelta()</span></code></a>).</p>
775 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[4]:·</span><span·class="n">df</span>·<span·class="o">=</span>·<span·class="n">df</span><span·class="o">.</span><span·class="n">infer_objects</span><span·class="p">()</span>775 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[4]:·</span><span·class="n">df</span>·<span·class="o">=</span>·<span·class="n">df</span><span·class="o">.</span><span·class="n">infer_objects</span><span·class="p">()</span>
  
776 <span·class="gp">In·[5]:·</span><span·class="n">df</span><span·class="p">[</span><span·class="s1">&#39;C&#39;</span><span·class="p">]</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">to_numeric</span><span·class="p">(</span><span·class="n">df</span><span·class="p">[</span><span·class="s1">&#39;C&#39;</span><span·class="p">],</span>·<span·class="n">errors</span><span·class="o">=</span><span·class="s1">&#39;coerce&#39;</span><span·class="p">)</span>776 <span·class="gp">In·[5]:·</span><span·class="n">df</span><span·class="p">[</span><span·class="s1">&#39;C&#39;</span><span·class="p">]</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">to_numeric</span><span·class="p">(</span><span·class="n">df</span><span·class="p">[</span><span·class="s1">&#39;C&#39;</span><span·class="p">],</span>·<span·class="n">errors</span><span·class="o">=</span><span·class="s1">&#39;coerce&#39;</span><span·class="p">)</span>
  
777 <span·class="gp">In·[6]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">dtypes</span>777 <span·class="gp">In·[6]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">dtypes</span>
778 <span·class="gh">Out[6]:·</span>778 <span·class="gh">Out[6]:·</span>
779 <span·class="go">A····int64</span>779 <span·class="go">A····int64</span>
780 <span·class="go">B····int64</span>780 <span·class="go">B····int64</span>
781 <span·class="go">C····int64</span>781 <span·class="go">C····int64</span>
782 <span·class="go">Length:·3,·dtype:·object</span>782 <span·class="go">dtype:·object</span>
783 </pre></div>783 </pre></div>
784 </div>784 </div>
785 </section>785 </section>
786 <section·id="improved-warnings-when-attempting-to-create-columns">786 <section·id="improved-warnings-when-attempting-to-create-columns">
787 <span·id="whatsnew-0210-enhancements-attribute-access"></span><h3>Improved·warnings·when·attempting·to·create·columns<a·class="headerlink"·href="#improved-warnings-when-attempting-to-create-columns"·title="Link·to·this·heading">#</a></h3>787 <span·id="whatsnew-0210-enhancements-attribute-access"></span><h3>Improved·warnings·when·attempting·to·create·columns<a·class="headerlink"·href="#improved-warnings-when-attempting-to-create-columns"·title="Link·to·this·heading">#</a></h3>
788 <p>New·users·are·often·puzzled·by·the·relationship·between·column·operations·and788 <p>New·users·are·often·puzzled·by·the·relationship·between·column·operations·and
789 attribute·access·on·<code·class="docutils·literal·notranslate"><span·class="pre">DataFrame</span></code>·instances·(<a·class="extlink-issue·reference·external"·href="https://github.com/pandas-dev/pandas/issues/7175">GH·7175</a>).·One·specific789 attribute·access·on·<code·class="docutils·literal·notranslate"><span·class="pre">DataFrame</span></code>·instances·(<a·class="extlink-issue·reference·external"·href="https://github.com/pandas-dev/pandas/issues/7175">GH·7175</a>).·One·specific
Offset 820, 32 lines modifiedOffset 820, 26 lines modified
  
820 <span·class="gp">In·[8]:·</span><span·class="n">df</span>820 <span·class="gp">In·[8]:·</span><span·class="n">df</span>
821 <span·class="gh">Out[8]:·</span>821 <span·class="gh">Out[8]:·</span>
822 <span·class="go">···A··B··C··D</span>822 <span·class="go">···A··B··C··D</span>
823 <span·class="go">0··0··1··2··3</span>823 <span·class="go">0··0··1··2··3</span>
824 <span·class="go">1··4··5··6··7</span>824 <span·class="go">1··4··5··6··7</span>
  
825 <span·class="go">[2·rows·x·4·columns]</span> 
  
826 <span·class="gp">In·[9]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">drop</span><span·class="p">([</span><span·class="s1">&#39;B&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;C&#39;</span><span·class="p">],</span>·<span·class="n">axis</span><span·class="o">=</span><span·class="mi">1</span><span·class="p">)</span>825 <span·class="gp">In·[9]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">drop</span><span·class="p">([</span><span·class="s1">&#39;B&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;C&#39;</span><span·class="p">],</span>·<span·class="n">axis</span><span·class="o">=</span><span·class="mi">1</span><span·class="p">)</span>
827 <span·class="gh">Out[9]:·</span>826 <span·class="gh">Out[9]:·</span>
828 <span·class="go">···A··D</span>827 <span·class="go">···A··D</span>
829 <span·class="go">0··0··3</span>828 <span·class="go">0··0··3</span>
830 <span·class="go">1··4··7</span>829 <span·class="go">1··4··7</span>
  
831 <span·class="go">[2·rows·x·2·columns]</span> 
  
832 <span·class="go">#·the·following·is·now·equivalent</span>830 <span·class="go">#·the·following·is·now·equivalent</span>
833 <span·class="gp">In·[10]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">drop</span><span·class="p">(</span><span·class="n">columns</span><span·class="o">=</span><span·class="p">[</span><span·class="s1">&#39;B&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;C&#39;</span><span·class="p">])</span>831 <span·class="gp">In·[10]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">drop</span><span·class="p">(</span><span·class="n">columns</span><span·class="o">=</span><span·class="p">[</span><span·class="s1">&#39;B&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;C&#39;</span><span·class="p">])</span>
834 <span·class="gh">Out[10]:·</span>832 <span·class="gh">Out[10]:·</span>
835 <span·class="go">···A··D</span>833 <span·class="go">···A··D</span>
836 <span·class="go">0··0··3</span>834 <span·class="go">0··0··3</span>
837 <span·class="go">1··4··7</span>835 <span·class="go">1··4··7</span>
  
838 <span·class="go">[2·rows·x·2·columns]</span> 
839 </pre></div>836 </pre></div>
840 </div>837 </div>
841 </section>838 </section>
842 <section·id="methods-rename-reindex-now-also-accept-axis-keyword">839 <section·id="methods-rename-reindex-now-also-accept-axis-keyword">
843 <span·id="whatsnew-0210-enhancements-rename-reindex-axis"></span><h3>Methods·<code·class="docutils·literal·notranslate"><span·class="pre">rename</span></code>,·<code·class="docutils·literal·notranslate"><span·class="pre">reindex</span></code>·now·also·accept·axis·keyword<a·class="headerlink"·href="#methods-rename-reindex-now-also-accept-axis-keyword"·title="Link·to·this·heading">#</a></h3>840 <span·id="whatsnew-0210-enhancements-rename-reindex-axis"></span><h3>Methods·<code·class="docutils·literal·notranslate"><span·class="pre">rename</span></code>,·<code·class="docutils·literal·notranslate"><span·class="pre">reindex</span></code>·now·also·accept·axis·keyword<a·class="headerlink"·href="#methods-rename-reindex-now-also-accept-axis-keyword"·title="Link·to·this·heading">#</a></h3>
844 <p>The·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.rename.html#pandas.DataFrame.rename"·title="pandas.DataFrame.rename"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">DataFrame.rename()</span></code></a>·and·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.reindex.html#pandas.DataFrame.reindex"·title="pandas.DataFrame.reindex"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">DataFrame.reindex()</span></code></a>·methods·have·gained841 <p>The·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.rename.html#pandas.DataFrame.rename"·title="pandas.DataFrame.rename"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">DataFrame.rename()</span></code></a>·and·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.reindex.html#pandas.DataFrame.reindex"·title="pandas.DataFrame.reindex"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">DataFrame.reindex()</span></code></a>·methods·have·gained
845 the·<code·class="docutils·literal·notranslate"><span·class="pre">axis</span></code>·keyword·to·specify·the·axis·to·target·with·the·operation842 the·<code·class="docutils·literal·notranslate"><span·class="pre">axis</span></code>·keyword·to·specify·the·axis·to·target·with·the·operation
Offset 856, 64 lines modifiedOffset 850, 52 lines modified
856 <span·class="gp">In·[12]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">rename</span><span·class="p">(</span><span·class="nb">str</span><span·class="o">.</span><span·class="n">lower</span><span·class="p">,</span>·<span·class="n">axis</span><span·class="o">=</span><span·class="s1">&#39;columns&#39;</span><span·class="p">)</span>850 <span·class="gp">In·[12]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">rename</span><span·class="p">(</span><span·class="nb">str</span><span·class="o">.</span><span·class="n">lower</span><span·class="p">,</span>·<span·class="n">axis</span><span·class="o">=</span><span·class="s1">&#39;columns&#39;</span><span·class="p">)</span>
857 <span·class="gh">Out[12]:·</span>851 <span·class="gh">Out[12]:·</span>
858 <span·class="go">···a··b</span>852 <span·class="go">···a··b</span>
859 <span·class="go">0··1··4</span>853 <span·class="go">0··1··4</span>
860 <span·class="go">1··2··5</span>854 <span·class="go">1··2··5</span>
861 <span·class="go">2··3··6</span>855 <span·class="go">2··3··6</span>
  
862 <span·class="go">[3·rows·x·2·columns]</span> 
  
863 <span·class="gp">In·[13]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">rename</span><span·class="p">(</span><span·class="nb">id</span><span·class="p">,</span>·<span·class="n">axis</span><span·class="o">=</span><span·class="s1">&#39;index&#39;</span><span·class="p">)</span>856 <span·class="gp">In·[13]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">rename</span><span·class="p">(</span><span·class="nb">id</span><span·class="p">,</span>·<span·class="n">axis</span><span·class="o">=</span><span·class="s1">&#39;index&#39;</span><span·class="p">)</span>
864 <span·class="gh">Out[13]:·</span>857 <span·class="gh">Out[13]:·</span>
865 <span·class="go">··········A··B</span>858 <span·class="go">··········A··B</span>
866 <span·class="go">10754736··1··4</span>859 <span·class="go">10754736··1··4</span>
867 <span·class="go">10754768··2··5</span>860 <span·class="go">10754768··2··5</span>
868 <span·class="go">10754800··3··6</span>861 <span·class="go">10754800··3··6</span>
  
869 <span·class="go">[3·rows·x·2·columns]</span> 
870 </pre></div>862 </pre></div>
871 </div>863 </div>
872 <p>And·<code·class="docutils·literal·notranslate"><span·class="pre">reindex</span></code>:</p>864 <p>And·<code·class="docutils·literal·notranslate"><span·class="pre">reindex</span></code>:</p>
873 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[14]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">reindex</span><span·class="p">([</span><span·class="s1">&#39;A&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;B&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;C&#39;</span><span·class="p">],</span>·<span·class="n">axis</span><span·class="o">=</span><span·class="s1">&#39;columns&#39;</span><span·class="p">)</span>865 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[14]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">reindex</span><span·class="p">([</span><span·class="s1">&#39;A&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;B&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;C&#39;</span><span·class="p">],</span>·<span·class="n">axis</span><span·class="o">=</span><span·class="s1">&#39;columns&#39;</span><span·class="p">)</span>
874 <span·class="gh">Out[14]:·</span>866 <span·class="gh">Out[14]:·</span>
875 <span·class="go">···A··B···C</span>867 <span·class="go">···A··B···C</span>
876 <span·class="go">0··1··4·NaN</span>868 <span·class="go">0··1··4·NaN</span>
877 <span·class="go">1··2··5·NaN</span>869 <span·class="go">1··2··5·NaN</span>
878 <span·class="go">2··3··6·NaN</span>870 <span·class="go">2··3··6·NaN</span>
  
879 <span·class="go">[3·rows·x·3·columns]</span> 
  
880 <span·class="gp">In·[15]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">reindex</span><span·class="p">([</span><span·class="mi">0</span><span·class="p">,</span>·<span·class="mi">1</span><span·class="p">,</span>·<span·class="mi">3</span><span·class="p">],</span>·<span·class="n">axis</span><span·class="o">=</span><span·class="s1">&#39;index&#39;</span><span·class="p">)</span>871 <span·class="gp">In·[15]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">reindex</span><span·class="p">([</span><span·class="mi">0</span><span·class="p">,</span>·<span·class="mi">1</span><span·class="p">,</span>·<span·class="mi">3</span><span·class="p">],</span>·<span·class="n">axis</span><span·class="o">=</span><span·class="s1">&#39;index&#39;</span><span·class="p">)</span>
881 <span·class="gh">Out[15]:·</span>872 <span·class="gh">Out[15]:·</span>
882 <span·class="go">·····A····B</span>873 <span·class="go">·····A····B</span>
883 <span·class="go">0··1.0··4.0</span>874 <span·class="go">0··1.0··4.0</span>
884 <span·class="go">1··2.0··5.0</span>875 <span·class="go">1··2.0··5.0</span>
885 <span·class="go">3··NaN··NaN</span>876 <span·class="go">3··NaN··NaN</span>
  
886 <span·class="go">[3·rows·x·2·columns]</span> 
887 </pre></div>877 </pre></div>
888 </div>878 </div>
889 <p>The·“index,·columns”·style·continues·to·work·as·before.</p>879 <p>The·“index,·columns”·style·continues·to·work·as·before.</p>
890 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[16]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">rename</span><span·class="p">(</span><span·class="n">index</span><span·class="o">=</span><span·class="nb">id</span><span·class="p">,</span>·<span·class="n">columns</span><span·class="o">=</span><span·class="nb">str</span><span·class="o">.</span><span·class="n">lower</span><span·class="p">)</span>880 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[16]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">rename</span><span·class="p">(</span><span·class="n">index</span><span·class="o">=</span><span·class="nb">id</span><span·class="p">,</span>·<span·class="n">columns</span><span·class="o">=</span><span·class="nb">str</span><span·class="o">.</span><span·class="n">lower</span><span·class="p">)</span>
891 <span·class="gh">Out[16]:·</span>881 <span·class="gh">Out[16]:·</span>
892 <span·class="go">··········a··b</span>882 <span·class="go">··········a··b</span>
893 <span·class="go">10754736··1··4</span>883 <span·class="go">10754736··1··4</span>
894 <span·class="go">10754768··2··5</span>884 <span·class="go">10754768··2··5</span>
895 <span·class="go">10754800··3··6</span>885 <span·class="go">10754800··3··6</span>
  
896 <span·class="go">[3·rows·x·2·columns]</span> 
  
897 <span·class="gp">In·[17]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">reindex</span><span·class="p">(</span><span·class="n">index</span><span·class="o">=</span><span·class="p">[</span><span·class="mi">0</span><span·class="p">,</span>·<span·class="mi">1</span><span·class="p">,</span>·<span·class="mi">3</span><span·class="p">],</span>·<span·class="n">columns</span><span·class="o">=</span><span·class="p">[</span><span·class="s1">&#39;A&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;B&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;C&#39;</span><span·class="p">])</span>886 <span·class="gp">In·[17]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">reindex</span><span·class="p">(</span><span·class="n">index</span><span·class="o">=</span><span·class="p">[</span><span·class="mi">0</span><span·class="p">,</span>·<span·class="mi">1</span><span·class="p">,</span>·<span·class="mi">3</span><span·class="p">],</span>·<span·class="n">columns</span><span·class="o">=</span><span·class="p">[</span><span·class="s1">&#39;A&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;B&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;C&#39;</span><span·class="p">])</span>
898 <span·class="gh">Out[17]:·</span>887 <span·class="gh">Out[17]:·</span>
899 <span·class="go">·····A····B···C</span>888 <span·class="go">·····A····B···C</span>
900 <span·class="go">0··1.0··4.0·NaN</span>889 <span·class="go">0··1.0··4.0·NaN</span>
901 <span·class="go">1··2.0··5.0·NaN</span>890 <span·class="go">1··2.0··5.0·NaN</span>
902 <span·class="go">3··NaN··NaN·NaN</span>891 <span·class="go">3··NaN··NaN·NaN</span>
  
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Offset 212, 35 lines modifiedOffset 212, 35 lines modified
212 ···...:212 ···...:
  
213 In·[2]:·df.dtypes213 In·[2]:·df.dtypes
214 Out[2]:214 Out[2]:
215 A·····int64215 A·····int64
216 B····object216 B····object
217 C····object217 C····object
218 Length:·3,·dtype:·object218 dtype:·object
  
219 In·[3]:·df.infer_objects().dtypes219 In·[3]:·df.infer_objects().dtypes
220 Out[3]:220 Out[3]:
221 A·····int64221 A·····int64
222 B·····int64222 B·····int64
223 C····object223 C····object
224 Length:·3,·dtype:·object224 dtype:·object
225 Note·that·column·'C'·was·not·converted·-·only·scalar·numeric·types·will·be225 Note·that·column·'C'·was·not·converted·-·only·scalar·numeric·types·will·be
226 converted·to·a·new·type.·Other·types·of·conversion·should·be·accomplished·using226 converted·to·a·new·type.·Other·types·of·conversion·should·be·accomplished·using
227 the·_\x8t_\x8o_\x8__\x8n_\x8u_\x8m_\x8e_\x8r_\x8i_\x8c_\x8(_\x8)·function·(or·_\x8t_\x8o_\x8__\x8d_\x8a_\x8t_\x8e_\x8t_\x8i_\x8m_\x8e_\x8(_\x8),·_\x8t_\x8o_\x8__\x8t_\x8i_\x8m_\x8e_\x8d_\x8e_\x8l_\x8t_\x8a_\x8(_\x8)).227 the·_\x8t_\x8o_\x8__\x8n_\x8u_\x8m_\x8e_\x8r_\x8i_\x8c_\x8(_\x8)·function·(or·_\x8t_\x8o_\x8__\x8d_\x8a_\x8t_\x8e_\x8t_\x8i_\x8m_\x8e_\x8(_\x8),·_\x8t_\x8o_\x8__\x8t_\x8i_\x8m_\x8e_\x8d_\x8e_\x8l_\x8t_\x8a_\x8(_\x8)).
228 In·[4]:·df·=·df.infer_objects()228 In·[4]:·df·=·df.infer_objects()
  
229 In·[5]:·df['C']·=·pd.to_numeric(df['C'],·errors='coerce')229 In·[5]:·df['C']·=·pd.to_numeric(df['C'],·errors='coerce')
  
230 In·[6]:·df.dtypes230 In·[6]:·df.dtypes
231 Out[6]:231 Out[6]:
232 A····int64232 A····int64
233 B····int64233 B····int64
234 C····int64234 C····int64
235 Length:·3,·dtype:·object235 dtype:·object
236 *\x8**\x8**\x8**\x8*·I\x8Im\x8mp\x8pr\x8ro\x8ov\x8ve\x8ed\x8d·w\x8wa\x8ar\x8rn\x8ni\x8in\x8ng\x8gs\x8s·w\x8wh\x8he\x8en\x8n·a\x8at\x8tt\x8te\x8em\x8mp\x8pt\x8ti\x8in\x8ng\x8g·t\x8to\x8o·c\x8cr\x8re\x8ea\x8at\x8te\x8e·c\x8co\x8ol\x8lu\x8um\x8mn\x8ns\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*236 *\x8**\x8**\x8**\x8*·I\x8Im\x8mp\x8pr\x8ro\x8ov\x8ve\x8ed\x8d·w\x8wa\x8ar\x8rn\x8ni\x8in\x8ng\x8gs\x8s·w\x8wh\x8he\x8en\x8n·a\x8at\x8tt\x8te\x8em\x8mp\x8pt\x8ti\x8in\x8ng\x8g·t\x8to\x8o·c\x8cr\x8re\x8ea\x8at\x8te\x8e·c\x8co\x8ol\x8lu\x8um\x8mn\x8ns\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*
237 New·users·are·often·puzzled·by·the·relationship·between·column·operations·and237 New·users·are·often·puzzled·by·the·relationship·between·column·operations·and
238 attribute·access·on·DataFrame·instances·(_\x8G_\x8H_\x8·_\x87_\x81_\x87_\x85).·One·specific·instance·of238 attribute·access·on·DataFrame·instances·(_\x8G_\x8H_\x8·_\x87_\x81_\x87_\x85).·One·specific·instance·of
239 this·confusion·is·attempting·to·create·a·new·column·by·setting·an·attribute·on239 this·confusion·is·attempting·to·create·a·new·column·by·setting·an·attribute·on
240 the·DataFrame:240 the·DataFrame:
241 In·[1]:·df·=·pd.DataFrame({'one':·[1.,·2.,·3.]})241 In·[1]:·df·=·pd.DataFrame({'one':·[1.,·2.,·3.]})
242 In·[2]:·df.two·=·[4,·5,·6]242 In·[2]:·df.two·=·[4,·5,·6]
Offset 264, 91 lines modifiedOffset 264, 73 lines modified
  
264 In·[8]:·df264 In·[8]:·df
265 Out[8]:265 Out[8]:
266 ···A··B··C··D266 ···A··B··C··D
267 0··0··1··2··3267 0··0··1··2··3
268 1··4··5··6··7268 1··4··5··6··7
  
269 [2·rows·x·4·columns] 
  
270 In·[9]:·df.drop(['B',·'C'],·axis=1)269 In·[9]:·df.drop(['B',·'C'],·axis=1)
271 Out[9]:270 Out[9]:
272 ···A··D271 ···A··D
273 0··0··3272 0··0··3
274 1··4··7273 1··4··7
  
275 [2·rows·x·2·columns] 
  
276 #·the·following·is·now·equivalent274 #·the·following·is·now·equivalent
277 In·[10]:·df.drop(columns=['B',·'C'])275 In·[10]:·df.drop(columns=['B',·'C'])
278 Out[10]:276 Out[10]:
279 ···A··D277 ···A··D
280 0··0··3278 0··0··3
281 1··4··7279 1··4··7
  
282 [2·rows·x·2·columns] 
283 *\x8**\x8**\x8**\x8*·M\x8Me\x8et\x8th\x8ho\x8od\x8ds\x8s·r\x8re\x8en\x8na\x8am\x8me\x8e,\x8,·r\x8re\x8ei\x8in\x8nd\x8de\x8ex\x8x·n\x8no\x8ow\x8w·a\x8al\x8ls\x8so\x8o·a\x8ac\x8cc\x8ce\x8ep\x8pt\x8t·a\x8ax\x8xi\x8is\x8s·k\x8ke\x8ey\x8yw\x8wo\x8or\x8rd\x8d_\x8#\x8#·*\x8**\x8**\x8**\x8*280 *\x8**\x8**\x8**\x8*·M\x8Me\x8et\x8th\x8ho\x8od\x8ds\x8s·r\x8re\x8en\x8na\x8am\x8me\x8e,\x8,·r\x8re\x8ei\x8in\x8nd\x8de\x8ex\x8x·n\x8no\x8ow\x8w·a\x8al\x8ls\x8so\x8o·a\x8ac\x8cc\x8ce\x8ep\x8pt\x8t·a\x8ax\x8xi\x8is\x8s·k\x8ke\x8ey\x8yw\x8wo\x8or\x8rd\x8d_\x8#\x8#·*\x8**\x8**\x8**\x8*
284 The·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8r_\x8e_\x8n_\x8a_\x8m_\x8e_\x8(_\x8)·and·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8r_\x8e_\x8i_\x8n_\x8d_\x8e_\x8x_\x8(_\x8)·methods·have·gained·the·axis281 The·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8r_\x8e_\x8n_\x8a_\x8m_\x8e_\x8(_\x8)·and·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8r_\x8e_\x8i_\x8n_\x8d_\x8e_\x8x_\x8(_\x8)·methods·have·gained·the·axis
285 keyword·to·specify·the·axis·to·target·with·the·operation·(_\x8G_\x8H_\x8·_\x81_\x82_\x83_\x89_\x82).282 keyword·to·specify·the·axis·to·target·with·the·operation·(_\x8G_\x8H_\x8·_\x81_\x82_\x83_\x89_\x82).
286 Here’s·rename:283 Here’s·rename:
287 In·[11]:·df·=·pd.DataFrame({"A":·[1,·2,·3],·"B":·[4,·5,·6]})284 In·[11]:·df·=·pd.DataFrame({"A":·[1,·2,·3],·"B":·[4,·5,·6]})
  
288 In·[12]:·df.rename(str.lower,·axis='columns')285 In·[12]:·df.rename(str.lower,·axis='columns')
289 Out[12]:286 Out[12]:
290 ···a··b287 ···a··b
291 0··1··4288 0··1··4
292 1··2··5289 1··2··5
293 2··3··6290 2··3··6
  
294 [3·rows·x·2·columns] 
  
295 In·[13]:·df.rename(id,·axis='index')291 In·[13]:·df.rename(id,·axis='index')
296 Out[13]:292 Out[13]:
297 ··········A··B293 ··········A··B
298 10754736··1··4294 10754736··1··4
299 10754768··2··5295 10754768··2··5
300 10754800··3··6296 10754800··3··6
  
301 [3·rows·x·2·columns] 
302 And·reindex:297 And·reindex:
303 In·[14]:·df.reindex(['A',·'B',·'C'],·axis='columns')298 In·[14]:·df.reindex(['A',·'B',·'C'],·axis='columns')
304 Out[14]:299 Out[14]:
305 ···A··B···C300 ···A··B···C
306 0··1··4·NaN301 0··1··4·NaN
307 1··2··5·NaN302 1··2··5·NaN
308 2··3··6·NaN303 2··3··6·NaN
  
309 [3·rows·x·3·columns] 
  
310 In·[15]:·df.reindex([0,·1,·3],·axis='index')304 In·[15]:·df.reindex([0,·1,·3],·axis='index')
311 Out[15]:305 Out[15]:
312 ·····A····B306 ·····A····B
313 0··1.0··4.0307 0··1.0··4.0
314 1··2.0··5.0308 1··2.0··5.0
315 3··NaN··NaN309 3··NaN··NaN
  
316 [3·rows·x·2·columns] 
317 The·“index,·columns”·style·continues·to·work·as·before.310 The·“index,·columns”·style·continues·to·work·as·before.
318 In·[16]:·df.rename(index=id,·columns=str.lower)311 In·[16]:·df.rename(index=id,·columns=str.lower)
319 Out[16]:312 Out[16]:
320 ··········a··b313 ··········a··b
321 10754736··1··4314 10754736··1··4
322 10754768··2··5315 10754768··2··5
323 10754800··3··6316 10754800··3··6
  
324 [3·rows·x·2·columns] 
  
325 In·[17]:·df.reindex(index=[0,·1,·3],·columns=['A',·'B',·'C'])317 In·[17]:·df.reindex(index=[0,·1,·3],·columns=['A',·'B',·'C'])
326 Out[17]:318 Out[17]:
327 ·····A····B···C319 ·····A····B···C
328 0··1.0··4.0·NaN320 0··1.0··4.0·NaN
329 1··2.0··5.0·NaN321 1··2.0··5.0·NaN
330 3··NaN··NaN·NaN322 3··NaN··NaN·NaN
  
331 [3·rows·x·3·columns] 
332 We·h\x8hi\x8ig\x8gh\x8hl\x8ly\x8y·encourage·using·named·arguments·to·avoid·confusion·when·using·either323 We·h\x8hi\x8ig\x8gh\x8hl\x8ly\x8y·encourage·using·named·arguments·to·avoid·confusion·when·using·either
333 style.324 style.
334 *\x8**\x8**\x8**\x8*·C\x8Ca\x8at\x8te\x8eg\x8go\x8or\x8ri\x8ic\x8ca\x8al\x8lD\x8Dt\x8ty\x8yp\x8pe\x8e·f\x8fo\x8or\x8r·s\x8sp\x8pe\x8ec\x8ci\x8if\x8fy\x8yi\x8in\x8ng\x8g·c\x8ca\x8at\x8te\x8eg\x8go\x8or\x8ri\x8ic\x8ca\x8al\x8ls\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*325 *\x8**\x8**\x8**\x8*·C\x8Ca\x8at\x8te\x8eg\x8go\x8or\x8ri\x8ic\x8ca\x8al\x8lD\x8Dt\x8ty\x8yp\x8pe\x8e·f\x8fo\x8or\x8r·s\x8sp\x8pe\x8ec\x8ci\x8if\x8fy\x8yi\x8in\x8ng\x8g·c\x8ca\x8at\x8te\x8eg\x8go\x8or\x8ri\x8ic\x8ca\x8al\x8ls\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*
335 pandas.api.types.CategoricalDtype·has·been·added·to·the·public·API·and·expanded326 pandas.api.types.CategoricalDtype·has·been·added·to·the·public·API·and·expanded
336 to·include·the·categories·and·ordered·attributes.·A·CategoricalDtype·can·be327 to·include·the·categories·and·ordered·attributes.·A·CategoricalDtype·can·be
337 used·to·specify·the·set·of·categories·and·orderedness·of·an·array,·independent328 used·to·specify·the·set·of·categories·and·orderedness·of·an·array,·independent
338 of·the·data.·This·can·be·useful·for·example,·when·converting·string·data·to·a329 of·the·data.·This·can·be·useful·for·example,·when·converting·string·data·to·a
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745 <p><em>pandas·0.22</em></p>745 <p><em>pandas·0.22</em></p>
746 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[8]:·</span><span·class="n">grouper</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">Categorical</span><span·class="p">([</span><span·class="s2">&quot;a&quot;</span><span·class="p">,</span>·<span·class="s2">&quot;a&quot;</span><span·class="p">],</span>·<span·class="n">categories</span><span·class="o">=</span><span·class="p">[</span><span·class="s2">&quot;a&quot;</span><span·class="p">,</span>·<span·class="s2">&quot;b&quot;</span><span·class="p">])</span>746 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[8]:·</span><span·class="n">grouper</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">Categorical</span><span·class="p">([</span><span·class="s2">&quot;a&quot;</span><span·class="p">,</span>·<span·class="s2">&quot;a&quot;</span><span·class="p">],</span>·<span·class="n">categories</span><span·class="o">=</span><span·class="p">[</span><span·class="s2">&quot;a&quot;</span><span·class="p">,</span>·<span·class="s2">&quot;b&quot;</span><span·class="p">])</span>
  
747 <span·class="gp">In·[9]:·</span><span·class="n">pd</span><span·class="o">.</span><span·class="n">Series</span><span·class="p">([</span><span·class="mi">1</span><span·class="p">,</span>·<span·class="mi">2</span><span·class="p">])</span><span·class="o">.</span><span·class="n">groupby</span><span·class="p">(</span><span·class="n">grouper</span><span·class="p">,</span>·<span·class="n">observed</span><span·class="o">=</span><span·class="kc">False</span><span·class="p">)</span><span·class="o">.</span><span·class="n">sum</span><span·class="p">()</span>747 <span·class="gp">In·[9]:·</span><span·class="n">pd</span><span·class="o">.</span><span·class="n">Series</span><span·class="p">([</span><span·class="mi">1</span><span·class="p">,</span>·<span·class="mi">2</span><span·class="p">])</span><span·class="o">.</span><span·class="n">groupby</span><span·class="p">(</span><span·class="n">grouper</span><span·class="p">,</span>·<span·class="n">observed</span><span·class="o">=</span><span·class="kc">False</span><span·class="p">)</span><span·class="o">.</span><span·class="n">sum</span><span·class="p">()</span>
748 <span·class="gh">Out[9]:·</span>748 <span·class="gh">Out[9]:·</span>
749 <span·class="go">a····3</span>749 <span·class="go">a····3</span>
750 <span·class="go">b····0</span>750 <span·class="go">b····0</span>
751 <span·class="go">Length:·2,·dtype:·int64</span>751 <span·class="go">dtype:·int64</span>
752 </pre></div>752 </pre></div>
753 </div>753 </div>
754 <p>To·restore·the·0.21·behavior·of·returning·<code·class="docutils·literal·notranslate"><span·class="pre">NaN</span></code>·for·unobserved·groups,754 <p>To·restore·the·0.21·behavior·of·returning·<code·class="docutils·literal·notranslate"><span·class="pre">NaN</span></code>·for·unobserved·groups,
755 use·<code·class="docutils·literal·notranslate"><span·class="pre">min_count&gt;=1</span></code>.</p>755 use·<code·class="docutils·literal·notranslate"><span·class="pre">min_count&gt;=1</span></code>.</p>
756 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[10]:·</span><span·class="n">pd</span><span·class="o">.</span><span·class="n">Series</span><span·class="p">([</span><span·class="mi">1</span><span·class="p">,</span>·<span·class="mi">2</span><span·class="p">])</span><span·class="o">.</span><span·class="n">groupby</span><span·class="p">(</span><span·class="n">grouper</span><span·class="p">,</span>·<span·class="n">observed</span><span·class="o">=</span><span·class="kc">False</span><span·class="p">)</span><span·class="o">.</span><span·class="n">sum</span><span·class="p">(</span><span·class="n">min_count</span><span·class="o">=</span><span·class="mi">1</span><span·class="p">)</span>756 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[10]:·</span><span·class="n">pd</span><span·class="o">.</span><span·class="n">Series</span><span·class="p">([</span><span·class="mi">1</span><span·class="p">,</span>·<span·class="mi">2</span><span·class="p">])</span><span·class="o">.</span><span·class="n">groupby</span><span·class="p">(</span><span·class="n">grouper</span><span·class="p">,</span>·<span·class="n">observed</span><span·class="o">=</span><span·class="kc">False</span><span·class="p">)</span><span·class="o">.</span><span·class="n">sum</span><span·class="p">(</span><span·class="n">min_count</span><span·class="o">=</span><span·class="mi">1</span><span·class="p">)</span>
757 <span·class="gh">Out[10]:·</span>757 <span·class="gh">Out[10]:·</span>
758 <span·class="go">a····3.0</span>758 <span·class="go">a····3.0</span>
759 <span·class="go">b····NaN</span>759 <span·class="go">b····NaN</span>
760 <span·class="go">Length:·2,·dtype:·float64</span>760 <span·class="go">dtype:·float64</span>
761 </pre></div>761 </pre></div>
762 </div>762 </div>
763 </section>763 </section>
764 <section·id="resample">764 <section·id="resample">
765 <h3>Resample<a·class="headerlink"·href="#resample"·title="Link·to·this·heading">#</a></h3>765 <h3>Resample<a·class="headerlink"·href="#resample"·title="Link·to·this·heading">#</a></h3>
766 <p>The·sum·and·product·of·all-<em>NA</em>·bins·has·changed·from·<code·class="docutils·literal·notranslate"><span·class="pre">NaN</span></code>·to·<code·class="docutils·literal·notranslate"><span·class="pre">0</span></code>·for766 <p>The·sum·and·product·of·all-<em>NA</em>·bins·has·changed·from·<code·class="docutils·literal·notranslate"><span·class="pre">NaN</span></code>·to·<code·class="docutils·literal·notranslate"><span·class="pre">0</span></code>·for
767 sum·and·<code·class="docutils·literal·notranslate"><span·class="pre">1</span></code>·for·product.</p>767 sum·and·<code·class="docutils·literal·notranslate"><span·class="pre">1</span></code>·for·product.</p>
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787 <p><em>pandas·0.22.0</em></p>787 <p><em>pandas·0.22.0</em></p>
788 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[11]:·</span><span·class="n">s</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">Series</span><span·class="p">([</span><span·class="mi">1</span><span·class="p">,</span>·<span·class="mi">1</span><span·class="p">,</span>·<span·class="n">np</span><span·class="o">.</span><span·class="n">nan</span><span·class="p">,</span>·<span·class="n">np</span><span·class="o">.</span><span·class="n">nan</span><span·class="p">],</span>·<span·class="n">index</span><span·class="o">=</span><span·class="n">pd</span><span·class="o">.</span><span·class="n">date_range</span><span·class="p">(</span><span·class="s2">&quot;2017&quot;</span><span·class="p">,</span>·<span·class="n">periods</span><span·class="o">=</span><span·class="mi">4</span><span·class="p">))</span>788 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[11]:·</span><span·class="n">s</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">Series</span><span·class="p">([</span><span·class="mi">1</span><span·class="p">,</span>·<span·class="mi">1</span><span·class="p">,</span>·<span·class="n">np</span><span·class="o">.</span><span·class="n">nan</span><span·class="p">,</span>·<span·class="n">np</span><span·class="o">.</span><span·class="n">nan</span><span·class="p">],</span>·<span·class="n">index</span><span·class="o">=</span><span·class="n">pd</span><span·class="o">.</span><span·class="n">date_range</span><span·class="p">(</span><span·class="s2">&quot;2017&quot;</span><span·class="p">,</span>·<span·class="n">periods</span><span·class="o">=</span><span·class="mi">4</span><span·class="p">))</span>
  
789 <span·class="gp">In·[12]:·</span><span·class="n">s</span><span·class="o">.</span><span·class="n">resample</span><span·class="p">(</span><span·class="s2">&quot;2d&quot;</span><span·class="p">)</span><span·class="o">.</span><span·class="n">sum</span><span·class="p">()</span>789 <span·class="gp">In·[12]:·</span><span·class="n">s</span><span·class="o">.</span><span·class="n">resample</span><span·class="p">(</span><span·class="s2">&quot;2d&quot;</span><span·class="p">)</span><span·class="o">.</span><span·class="n">sum</span><span·class="p">()</span>
790 <span·class="gh">Out[12]:·</span>790 <span·class="gh">Out[12]:·</span>
791 <span·class="go">2017-01-01····2.0</span>791 <span·class="go">2017-01-01····2.0</span>
792 <span·class="go">2017-01-03····0.0</span>792 <span·class="go">2017-01-03····0.0</span>
793 <span·class="go">Freq:·2D,·Length:·2,·dtype:·float64</span>793 <span·class="go">Freq:·2D,·dtype:·float64</span>
794 </pre></div>794 </pre></div>
795 </div>795 </div>
796 <p>To·restore·the·0.21·behavior·of·returning·<code·class="docutils·literal·notranslate"><span·class="pre">NaN</span></code>,·use·<code·class="docutils·literal·notranslate"><span·class="pre">min_count&gt;=1</span></code>.</p>796 <p>To·restore·the·0.21·behavior·of·returning·<code·class="docutils·literal·notranslate"><span·class="pre">NaN</span></code>,·use·<code·class="docutils·literal·notranslate"><span·class="pre">min_count&gt;=1</span></code>.</p>
797 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[13]:·</span><span·class="n">s</span><span·class="o">.</span><span·class="n">resample</span><span·class="p">(</span><span·class="s2">&quot;2d&quot;</span><span·class="p">)</span><span·class="o">.</span><span·class="n">sum</span><span·class="p">(</span><span·class="n">min_count</span><span·class="o">=</span><span·class="mi">1</span><span·class="p">)</span>797 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[13]:·</span><span·class="n">s</span><span·class="o">.</span><span·class="n">resample</span><span·class="p">(</span><span·class="s2">&quot;2d&quot;</span><span·class="p">)</span><span·class="o">.</span><span·class="n">sum</span><span·class="p">(</span><span·class="n">min_count</span><span·class="o">=</span><span·class="mi">1</span><span·class="p">)</span>
798 <span·class="gh">Out[13]:·</span>798 <span·class="gh">Out[13]:·</span>
799 <span·class="go">2017-01-01····2.0</span>799 <span·class="go">2017-01-01····2.0</span>
800 <span·class="go">2017-01-03····NaN</span>800 <span·class="go">2017-01-03····NaN</span>
801 <span·class="go">Freq:·2D,·Length:·2,·dtype:·float64</span>801 <span·class="go">Freq:·2D,·dtype:·float64</span>
802 </pre></div>802 </pre></div>
803 </div>803 </div>
804 <p>In·particular,·upsampling·and·taking·the·sum·or·product·is·affected,·as804 <p>In·particular,·upsampling·and·taking·the·sum·or·product·is·affected,·as
805 upsampling·introduces·missing·values·even·if·the·original·series·was805 upsampling·introduces·missing·values·even·if·the·original·series·was
806 entirely·valid.</p>806 entirely·valid.</p>
807 <p><em>pandas·0.21.x</em></p>807 <p><em>pandas·0.21.x</em></p>
808 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[14]:·</span><span·class="n">idx</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">DatetimeIndex</span><span·class="p">([</span><span·class="s1">&#39;2017-01-01&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;2017-01-02&#39;</span><span·class="p">])</span>808 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[14]:·</span><span·class="n">idx</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">DatetimeIndex</span><span·class="p">([</span><span·class="s1">&#39;2017-01-01&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;2017-01-02&#39;</span><span·class="p">])</span>
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856 <p><em>pandas·0.22.0</em></p>856 <p><em>pandas·0.22.0</em></p>
857 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[14]:·</span><span·class="n">s</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">Series</span><span·class="p">([</span><span·class="n">np</span><span·class="o">.</span><span·class="n">nan</span><span·class="p">,</span>·<span·class="n">np</span><span·class="o">.</span><span·class="n">nan</span><span·class="p">])</span>857 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[14]:·</span><span·class="n">s</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">Series</span><span·class="p">([</span><span·class="n">np</span><span·class="o">.</span><span·class="n">nan</span><span·class="p">,</span>·<span·class="n">np</span><span·class="o">.</span><span·class="n">nan</span><span·class="p">])</span>
  
858 <span·class="gp">In·[15]:·</span><span·class="n">s</span><span·class="o">.</span><span·class="n">rolling</span><span·class="p">(</span><span·class="mi">2</span><span·class="p">,</span>·<span·class="n">min_periods</span><span·class="o">=</span><span·class="mi">0</span><span·class="p">)</span><span·class="o">.</span><span·class="n">sum</span><span·class="p">()</span>858 <span·class="gp">In·[15]:·</span><span·class="n">s</span><span·class="o">.</span><span·class="n">rolling</span><span·class="p">(</span><span·class="mi">2</span><span·class="p">,</span>·<span·class="n">min_periods</span><span·class="o">=</span><span·class="mi">0</span><span·class="p">)</span><span·class="o">.</span><span·class="n">sum</span><span·class="p">()</span>
859 <span·class="gh">Out[15]:·</span>859 <span·class="gh">Out[15]:·</span>
860 <span·class="go">0····0.0</span>860 <span·class="go">0····0.0</span>
861 <span·class="go">1····0.0</span>861 <span·class="go">1····0.0</span>
862 <span·class="go">Length:·2,·dtype:·float64</span>862 <span·class="go">dtype:·float64</span>
863 </pre></div>863 </pre></div>
864 </div>864 </div>
865 <p>The·default·behavior·of·<code·class="docutils·literal·notranslate"><span·class="pre">min_periods=None</span></code>,·implying·that·<code·class="docutils·literal·notranslate"><span·class="pre">min_periods</span></code>865 <p>The·default·behavior·of·<code·class="docutils·literal·notranslate"><span·class="pre">min_periods=None</span></code>,·implying·that·<code·class="docutils·literal·notranslate"><span·class="pre">min_periods</span></code>
866 equals·the·window·size,·is·unchanged.</p>866 equals·the·window·size,·is·unchanged.</p>
867 </section>867 </section>
868 </section>868 </section>
869 <section·id="compatibility">869 <section·id="compatibility">
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192 p\x8pa\x8an\x8nd\x8da\x8as\x8s·0\x80.\x8.2\x822\x82192 p\x8pa\x8an\x8nd\x8da\x8as\x8s·0\x80.\x8.2\x822\x82
193 In·[8]:·grouper·=·pd.Categorical(["a",·"a"],·categories=["a",·"b"])193 In·[8]:·grouper·=·pd.Categorical(["a",·"a"],·categories=["a",·"b"])
  
194 In·[9]:·pd.Series([1,·2]).groupby(grouper,·observed=False).sum()194 In·[9]:·pd.Series([1,·2]).groupby(grouper,·observed=False).sum()
195 Out[9]:195 Out[9]:
196 a····3196 a····3
197 b····0197 b····0
198 Length:·2,·dtype:·int64198 dtype:·int64
199 To·restore·the·0.21·behavior·of·returning·NaN·for·unobserved·groups,·use199 To·restore·the·0.21·behavior·of·returning·NaN·for·unobserved·groups,·use
200 min_count>=1.200 min_count>=1.
201 In·[10]:·pd.Series([1,·2]).groupby(grouper,·observed=False).sum(min_count=1)201 In·[10]:·pd.Series([1,·2]).groupby(grouper,·observed=False).sum(min_count=1)
202 Out[10]:202 Out[10]:
203 a····3.0203 a····3.0
204 b····NaN204 b····NaN
205 Length:·2,·dtype:·float64205 dtype:·float64
206 *\x8**\x8**\x8**\x8*·R\x8Re\x8es\x8sa\x8am\x8mp\x8pl\x8le\x8e_\x8#\x8#·*\x8**\x8**\x8**\x8*206 *\x8**\x8**\x8**\x8*·R\x8Re\x8es\x8sa\x8am\x8mp\x8pl\x8le\x8e_\x8#\x8#·*\x8**\x8**\x8**\x8*
207 The·sum·and·product·of·all-N\x8NA\x8A·bins·has·changed·from·NaN·to·0·for·sum·and·1·for207 The·sum·and·product·of·all-N\x8NA\x8A·bins·has·changed·from·NaN·to·0·for·sum·and·1·for
208 product.208 product.
209 p\x8pa\x8an\x8nd\x8da\x8as\x8s·0\x80.\x8.2\x821\x81.\x8.x\x8x209 p\x8pa\x8an\x8nd\x8da\x8as\x8s·0\x80.\x8.2\x821\x81.\x8.x\x8x
210 In·[11]:·s·=·pd.Series([1,·1,·np.nan,·np.nan],210 In·[11]:·s·=·pd.Series([1,·1,·np.nan,·np.nan],
211 ···....:···············index=pd.date_range('2017',·periods=4))211 ···....:···············index=pd.date_range('2017',·periods=4))
212 ···....:·s212 ···....:·s
Offset 227, 21 lines modifiedOffset 227, 21 lines modified
227 In·[11]:·s·=·pd.Series([1,·1,·np.nan,·np.nan],·index=pd.date_range("2017",227 In·[11]:·s·=·pd.Series([1,·1,·np.nan,·np.nan],·index=pd.date_range("2017",
228 periods=4))228 periods=4))
  
229 In·[12]:·s.resample("2d").sum()229 In·[12]:·s.resample("2d").sum()
230 Out[12]:230 Out[12]:
231 2017-01-01····2.0231 2017-01-01····2.0
232 2017-01-03····0.0232 2017-01-03····0.0
233 Freq:·2D,·Length:·2,·dtype:·float64233 Freq:·2D,·dtype:·float64
234 To·restore·the·0.21·behavior·of·returning·NaN,·use·min_count>=1.234 To·restore·the·0.21·behavior·of·returning·NaN,·use·min_count>=1.
235 In·[13]:·s.resample("2d").sum(min_count=1)235 In·[13]:·s.resample("2d").sum(min_count=1)
236 Out[13]:236 Out[13]:
237 2017-01-01····2.0237 2017-01-01····2.0
238 2017-01-03····NaN238 2017-01-03····NaN
239 Freq:·2D,·Length:·2,·dtype:·float64239 Freq:·2D,·dtype:·float64
240 In·particular,·upsampling·and·taking·the·sum·or·product·is·affected,·as240 In·particular,·upsampling·and·taking·the·sum·or·product·is·affected,·as
241 upsampling·introduces·missing·values·even·if·the·original·series·was·entirely241 upsampling·introduces·missing·values·even·if·the·original·series·was·entirely
242 valid.242 valid.
243 p\x8pa\x8an\x8nd\x8da\x8as\x8s·0\x80.\x8.2\x821\x81.\x8.x\x8x243 p\x8pa\x8an\x8nd\x8da\x8as\x8s·0\x80.\x8.2\x821\x81.\x8.x\x8x
244 In·[14]:·idx·=·pd.DatetimeIndex(['2017-01-01',·'2017-01-02'])244 In·[14]:·idx·=·pd.DatetimeIndex(['2017-01-01',·'2017-01-02'])
  
245 In·[15]:·pd.Series([1,·2],·index=idx).resample('12H').sum()245 In·[15]:·pd.Series([1,·2],·index=idx).resample('12H').sum()
Offset 281, 15 lines modifiedOffset 281, 15 lines modified
281 p\x8pa\x8an\x8nd\x8da\x8as\x8s·0\x80.\x8.2\x822\x82.\x8.0\x80281 p\x8pa\x8an\x8nd\x8da\x8as\x8s·0\x80.\x8.2\x822\x82.\x8.0\x80
282 In·[14]:·s·=·pd.Series([np.nan,·np.nan])282 In·[14]:·s·=·pd.Series([np.nan,·np.nan])
  
283 In·[15]:·s.rolling(2,·min_periods=0).sum()283 In·[15]:·s.rolling(2,·min_periods=0).sum()
284 Out[15]:284 Out[15]:
285 0····0.0285 0····0.0
286 1····0.0286 1····0.0
287 Length:·2,·dtype:·float64287 dtype:·float64
288 The·default·behavior·of·min_periods=None,·implying·that·min_periods·equals·the288 The·default·behavior·of·min_periods=None,·implying·that·min_periods·equals·the
289 window·size,·is·unchanged.289 window·size,·is·unchanged.
290 *\x8**\x8**\x8**\x8**\x8*·C\x8Co\x8om\x8mp\x8pa\x8at\x8ti\x8ib\x8bi\x8il\x8li\x8it\x8ty\x8y_\x8#\x8#·*\x8**\x8**\x8**\x8**\x8*290 *\x8**\x8**\x8**\x8**\x8*·C\x8Co\x8om\x8mp\x8pa\x8at\x8ti\x8ib\x8bi\x8il\x8li\x8it\x8ty\x8y_\x8#\x8#·*\x8**\x8**\x8**\x8**\x8*
291 If·you·maintain·a·library·that·should·work·across·pandas·versions,·it·may·be291 If·you·maintain·a·library·that·should·work·across·pandas·versions,·it·may·be
292 easiest·to·exclude·pandas·0.21·from·your·requirements.·Otherwise,·all·your·sum292 easiest·to·exclude·pandas·0.21·from·your·requirements.·Otherwise,·all·your·sum
293 ()·calls·would·need·to·check·if·the·Series·is·empty·before·summing.293 ()·calls·would·need·to·check·if·the·Series·is·empty·before·summing.
294 With·setuptools,·in·your·setup.py·use:294 With·setuptools,·in·your·setup.py·use:
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Offset 756, 46 lines modifiedOffset 756, 42 lines modified
756 <span·class="go">·····foo·bar········baz·qux</span>756 <span·class="go">·····foo·bar········baz·qux</span>
757 <span·class="go">idx························</span>757 <span·class="go">idx························</span>
758 <span·class="go">0······1···a·2018-01-01···a</span>758 <span·class="go">0······1···a·2018-01-01···a</span>
759 <span·class="go">1······2···b·2018-01-02···b</span>759 <span·class="go">1······2···b·2018-01-02···b</span>
760 <span·class="go">2······3···c·2018-01-03···c</span>760 <span·class="go">2······3···c·2018-01-03···c</span>
761 <span·class="go">3······4···d·2018-01-04···c</span>761 <span·class="go">3······4···d·2018-01-04···c</span>
  
762 <span·class="go">[4·rows·x·4·columns]</span> 
  
763 <span·class="gp">In·[3]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">dtypes</span>762 <span·class="gp">In·[3]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">dtypes</span>
764 <span·class="gh">Out[3]:·</span>763 <span·class="gh">Out[3]:·</span>
765 <span·class="go">foo·············int64</span>764 <span·class="go">foo·············int64</span>
766 <span·class="go">bar············object</span>765 <span·class="go">bar············object</span>
767 <span·class="go">baz····datetime64[ns]</span>766 <span·class="go">baz····datetime64[ns]</span>
768 <span·class="go">qux··········category</span>767 <span·class="go">qux··········category</span>
769 <span·class="go">Length:·4,·dtype:·object</span>768 <span·class="go">dtype:·object</span>
  
770 <span·class="gp">In·[4]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">to_json</span><span·class="p">(</span><span·class="s1">&#39;test.json&#39;</span><span·class="p">,</span>·<span·class="n">orient</span><span·class="o">=</span><span·class="s1">&#39;table&#39;</span><span·class="p">)</span>769 <span·class="gp">In·[4]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">to_json</span><span·class="p">(</span><span·class="s1">&#39;test.json&#39;</span><span·class="p">,</span>·<span·class="n">orient</span><span·class="o">=</span><span·class="s1">&#39;table&#39;</span><span·class="p">)</span>
  
771 <span·class="gp">In·[5]:·</span><span·class="n">new_df</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">read_json</span><span·class="p">(</span><span·class="s1">&#39;test.json&#39;</span><span·class="p">,</span>·<span·class="n">orient</span><span·class="o">=</span><span·class="s1">&#39;table&#39;</span><span·class="p">)</span>770 <span·class="gp">In·[5]:·</span><span·class="n">new_df</span>·<span·class="o">=</span>·<span·class="n">pd</span><span·class="o">.</span><span·class="n">read_json</span><span·class="p">(</span><span·class="s1">&#39;test.json&#39;</span><span·class="p">,</span>·<span·class="n">orient</span><span·class="o">=</span><span·class="s1">&#39;table&#39;</span><span·class="p">)</span>
  
772 <span·class="gp">In·[6]:·</span><span·class="n">new_df</span>771 <span·class="gp">In·[6]:·</span><span·class="n">new_df</span>
773 <span·class="gh">Out[6]:·</span>772 <span·class="gh">Out[6]:·</span>
774 <span·class="go">·····foo·bar········baz·qux</span>773 <span·class="go">·····foo·bar········baz·qux</span>
775 <span·class="go">idx························</span>774 <span·class="go">idx························</span>
776 <span·class="go">0······1···a·2018-01-01···a</span>775 <span·class="go">0······1···a·2018-01-01···a</span>
777 <span·class="go">1······2···b·2018-01-02···b</span>776 <span·class="go">1······2···b·2018-01-02···b</span>
778 <span·class="go">2······3···c·2018-01-03···c</span>777 <span·class="go">2······3···c·2018-01-03···c</span>
779 <span·class="go">3······4···d·2018-01-04···c</span>778 <span·class="go">3······4···d·2018-01-04···c</span>
  
780 <span·class="go">[4·rows·x·4·columns]</span> 
  
781 <span·class="gp">In·[7]:·</span><span·class="n">new_df</span><span·class="o">.</span><span·class="n">dtypes</span>779 <span·class="gp">In·[7]:·</span><span·class="n">new_df</span><span·class="o">.</span><span·class="n">dtypes</span>
782 <span·class="gh">Out[7]:·</span>780 <span·class="gh">Out[7]:·</span>
783 <span·class="go">foo·············int64</span>781 <span·class="go">foo·············int64</span>
784 <span·class="go">bar············object</span>782 <span·class="go">bar············object</span>
785 <span·class="go">baz····datetime64[ns]</span>783 <span·class="go">baz····datetime64[ns]</span>
786 <span·class="go">qux··········category</span>784 <span·class="go">qux··········category</span>
787 <span·class="go">Length:·4,·dtype:·object</span>785 <span·class="go">dtype:·object</span>
788 </pre></div>786 </pre></div>
789 </div>787 </div>
790 <p>Please·note·that·the·string·<code·class="docutils·literal·notranslate"><span·class="pre">index</span></code>·is·not·supported·with·the·round·trip·format,·as·it·is·used·by·default·in·<code·class="docutils·literal·notranslate"><span·class="pre">write_json</span></code>·to·indicate·a·missing·index·name.</p>788 <p>Please·note·that·the·string·<code·class="docutils·literal·notranslate"><span·class="pre">index</span></code>·is·not·supported·with·the·round·trip·format,·as·it·is·used·by·default·in·<code·class="docutils·literal·notranslate"><span·class="pre">write_json</span></code>·to·indicate·a·missing·index·name.</p>
791 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[8]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">index</span><span·class="o">.</span><span·class="n">name</span>·<span·class="o">=</span>·<span·class="s1">&#39;index&#39;</span>789 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[8]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">index</span><span·class="o">.</span><span·class="n">name</span>·<span·class="o">=</span>·<span·class="s1">&#39;index&#39;</span>
  
792 <span·class="gp">In·[9]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">to_json</span><span·class="p">(</span><span·class="s1">&#39;test.json&#39;</span><span·class="p">,</span>·<span·class="n">orient</span><span·class="o">=</span><span·class="s1">&#39;table&#39;</span><span·class="p">)</span>790 <span·class="gp">In·[9]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">to_json</span><span·class="p">(</span><span·class="s1">&#39;test.json&#39;</span><span·class="p">,</span>·<span·class="n">orient</span><span·class="o">=</span><span·class="s1">&#39;table&#39;</span><span·class="p">)</span>
  
Offset 805, 23 lines modifiedOffset 801, 21 lines modified
805 <span·class="gh">Out[11]:·</span>801 <span·class="gh">Out[11]:·</span>
806 <span·class="go">···foo·bar········baz·qux</span>802 <span·class="go">···foo·bar········baz·qux</span>
807 <span·class="go">0····1···a·2018-01-01···a</span>803 <span·class="go">0····1···a·2018-01-01···a</span>
808 <span·class="go">1····2···b·2018-01-02···b</span>804 <span·class="go">1····2···b·2018-01-02···b</span>
809 <span·class="go">2····3···c·2018-01-03···c</span>805 <span·class="go">2····3···c·2018-01-03···c</span>
810 <span·class="go">3····4···d·2018-01-04···c</span>806 <span·class="go">3····4···d·2018-01-04···c</span>
  
811 <span·class="go">[4·rows·x·4·columns]</span> 
  
812 <span·class="gp">In·[12]:·</span><span·class="n">new_df</span><span·class="o">.</span><span·class="n">dtypes</span>807 <span·class="gp">In·[12]:·</span><span·class="n">new_df</span><span·class="o">.</span><span·class="n">dtypes</span>
813 <span·class="gh">Out[12]:·</span>808 <span·class="gh">Out[12]:·</span>
814 <span·class="go">foo·············int64</span>809 <span·class="go">foo·············int64</span>
815 <span·class="go">bar············object</span>810 <span·class="go">bar············object</span>
816 <span·class="go">baz····datetime64[ns]</span>811 <span·class="go">baz····datetime64[ns]</span>
817 <span·class="go">qux··········category</span>812 <span·class="go">qux··········category</span>
818 <span·class="go">Length:·4,·dtype:·object</span>813 <span·class="go">dtype:·object</span>
819 </pre></div>814 </pre></div>
820 </div>815 </div>
821 </section>816 </section>
822 <section·id="method-assign-accepts-dependent-arguments">817 <section·id="method-assign-accepts-dependent-arguments">
823 <span·id="whatsnew-0230-enhancements-assign-dependent"></span><h3>Method·<code·class="docutils·literal·notranslate"><span·class="pre">.assign()</span></code>·accepts·dependent·arguments<a·class="headerlink"·href="#method-assign-accepts-dependent-arguments"·title="Link·to·this·heading">#</a></h3>818 <span·id="whatsnew-0230-enhancements-assign-dependent"></span><h3>Method·<code·class="docutils·literal·notranslate"><span·class="pre">.assign()</span></code>·accepts·dependent·arguments<a·class="headerlink"·href="#method-assign-accepts-dependent-arguments"·title="Link·to·this·heading">#</a></h3>
824 <p>The·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.assign.html#pandas.DataFrame.assign"·title="pandas.DataFrame.assign"><code·class="xref·py·py-func·docutils·literal·notranslate"><span·class="pre">DataFrame.assign()</span></code></a>·now·accepts·dependent·keyword·arguments·for·python·version·later·than·3.6·(see·also·<a·class="reference·external"·href="https://www.python.org/dev/peps/pep-0468/">PEP·468</a>).·Later·keyword·arguments·may·now·refer·to·earlier·ones·if·the·argument·is·a·callable.·See·the819 <p>The·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.assign.html#pandas.DataFrame.assign"·title="pandas.DataFrame.assign"><code·class="xref·py·py-func·docutils·literal·notranslate"><span·class="pre">DataFrame.assign()</span></code></a>·now·accepts·dependent·keyword·arguments·for·python·version·later·than·3.6·(see·also·<a·class="reference·external"·href="https://www.python.org/dev/peps/pep-0468/">PEP·468</a>).·Later·keyword·arguments·may·now·refer·to·earlier·ones·if·the·argument·is·a·callable.·See·the
825 <a·class="reference·internal"·href="../user_guide/dsintro.html#dsintro-chained-assignment"><span·class="std·std-ref">documentation·here</span></a>·(<a·class="extlink-issue·reference·external"·href="https://github.com/pandas-dev/pandas/issues/14207">GH·14207</a>)</p>820 <a·class="reference·internal"·href="../user_guide/dsintro.html#dsintro-chained-assignment"><span·class="std·std-ref">documentation·here</span></a>·(<a·class="extlink-issue·reference·external"·href="https://github.com/pandas-dev/pandas/issues/14207">GH·14207</a>)</p>
Offset 830, 24 lines modifiedOffset 824, 20 lines modified
830 <span·class="gp">In·[14]:·</span><span·class="n">df</span>824 <span·class="gp">In·[14]:·</span><span·class="n">df</span>
831 <span·class="gh">Out[14]:·</span>825 <span·class="gh">Out[14]:·</span>
832 <span·class="go">···A</span>826 <span·class="go">···A</span>
833 <span·class="go">0··1</span>827 <span·class="go">0··1</span>
834 <span·class="go">1··2</span>828 <span·class="go">1··2</span>
835 <span·class="go">2··3</span>829 <span·class="go">2··3</span>
  
836 <span·class="go">[3·rows·x·1·columns]</span> 
  
837 <span·class="gp">In·[15]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">assign</span><span·class="p">(</span><span·class="n">B</span><span·class="o">=</span><span·class="n">df</span><span·class="o">.</span><span·class="n">A</span><span·class="p">,</span>·<span·class="n">C</span><span·class="o">=</span><span·class="k">lambda</span>·<span·class="n">x</span><span·class="p">:</span>·<span·class="n">x</span><span·class="p">[</span><span·class="s1">&#39;A&#39;</span><span·class="p">]</span>·<span·class="o">+</span>·<span·class="n">x</span><span·class="p">[</span><span·class="s1">&#39;B&#39;</span><span·class="p">])</span>830 <span·class="gp">In·[15]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">assign</span><span·class="p">(</span><span·class="n">B</span><span·class="o">=</span><span·class="n">df</span><span·class="o">.</span><span·class="n">A</span><span·class="p">,</span>·<span·class="n">C</span><span·class="o">=</span><span·class="k">lambda</span>·<span·class="n">x</span><span·class="p">:</span>·<span·class="n">x</span><span·class="p">[</span><span·class="s1">&#39;A&#39;</span><span·class="p">]</span>·<span·class="o">+</span>·<span·class="n">x</span><span·class="p">[</span><span·class="s1">&#39;B&#39;</span><span·class="p">])</span>
838 <span·class="gh">Out[15]:·</span>831 <span·class="gh">Out[15]:·</span>
839 <span·class="go">···A··B··C</span>832 <span·class="go">···A··B··C</span>
840 <span·class="go">0··1··1··2</span>833 <span·class="go">0··1··1··2</span>
841 <span·class="go">1··2··2··4</span>834 <span·class="go">1··2··2··4</span>
842 <span·class="go">2··3··3··6</span>835 <span·class="go">2··3··3··6</span>
  
843 <span·class="go">[3·rows·x·3·columns]</span> 
844 </pre></div>836 </pre></div>
845 </div>837 </div>
846 <div·class="admonition·warning">838 <div·class="admonition·warning">
847 <p·class="admonition-title">Warning</p>839 <p·class="admonition-title">Warning</p>
848 <p>This·may·subtly·change·the·behavior·of·your·code·when·you’re840 <p>This·may·subtly·change·the·behavior·of·your·code·when·you’re
849 using·<code·class="docutils·literal·notranslate"><span·class="pre">.assign()</span></code>·to·update·an·existing·column.·Previously,·callables841 using·<code·class="docutils·literal·notranslate"><span·class="pre">.assign()</span></code>·to·update·an·existing·column.·Previously,·callables
850 referring·to·other·variables·being·updated·would·get·the·“old”·values</p>842 referring·to·other·variables·being·updated·would·get·the·“old”·values</p>
Offset 865, 16 lines modifiedOffset 855, 14 lines modified
865 <p>New·behavior:</p>855 <p>New·behavior:</p>
866 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[16]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">assign</span><span·class="p">(</span><span·class="n">A</span><span·class="o">=</span><span·class="n">df</span><span·class="o">.</span><span·class="n">A</span>·<span·class="o">+</span>·<span·class="mi">1</span><span·class="p">,</span>·<span·class="n">C</span><span·class="o">=</span><span·class="k">lambda</span>·<span·class="n">df</span><span·class="p">:</span>·<span·class="n">df</span><span·class="o">.</span><span·class="n">A</span>·<span·class="o">*</span>·<span·class="o">-</span><span·class="mi">1</span><span·class="p">)</span>856 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[16]:·</span><span·class="n">df</span><span·class="o">.</span><span·class="n">assign</span><span·class="p">(</span><span·class="n">A</span><span·class="o">=</span><span·class="n">df</span><span·class="o">.</span><span·class="n">A</span>·<span·class="o">+</span>·<span·class="mi">1</span><span·class="p">,</span>·<span·class="n">C</span><span·class="o">=</span><span·class="k">lambda</span>·<span·class="n">df</span><span·class="p">:</span>·<span·class="n">df</span><span·class="o">.</span><span·class="n">A</span>·<span·class="o">*</span>·<span·class="o">-</span><span·class="mi">1</span><span·class="p">)</span>
867 <span·class="gh">Out[16]:·</span>857 <span·class="gh">Out[16]:·</span>
868 <span·class="go">···A··C</span>858 <span·class="go">···A··C</span>
869 <span·class="go">0··2·-2</span>859 <span·class="go">0··2·-2</span>
870 <span·class="go">1··3·-3</span>860 <span·class="go">1··3·-3</span>
871 <span·class="go">2··4·-4</span>861 <span·class="go">2··4·-4</span>
  
872 <span·class="go">[3·rows·x·2·columns]</span> 
873 </pre></div>862 </pre></div>
874 </div>863 </div>
875 </div>864 </div>
876 </section>865 </section>
877 <section·id="merging-on-a-combination-of-columns-and-index-levels">866 <section·id="merging-on-a-combination-of-columns-and-index-levels">
878 <span·id="whatsnew-0230-enhancements-merge-on-columns-and-levels"></span><h3>Merging·on·a·combination·of·columns·and·index·levels<a·class="headerlink"·href="#merging-on-a-combination-of-columns-and-index-levels"·title="Link·to·this·heading">#</a></h3>867 <span·id="whatsnew-0230-enhancements-merge-on-columns-and-levels"></span><h3>Merging·on·a·combination·of·columns·and·index·levels<a·class="headerlink"·href="#merging-on-a-combination-of-columns-and-index-levels"·title="Link·to·this·heading">#</a></h3>
879 <p>Strings·passed·to·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.merge.html#pandas.DataFrame.merge"·title="pandas.DataFrame.merge"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">DataFrame.merge()</span></code></a>·as·the·<code·class="docutils·literal·notranslate"><span·class="pre">on</span></code>,·<code·class="docutils·literal·notranslate"><span·class="pre">left_on</span></code>,·and·<code·class="docutils·literal·notranslate"><span·class="pre">right_on</span></code>868 <p>Strings·passed·to·<a·class="reference·internal"·href="../reference/api/pandas.DataFrame.merge.html#pandas.DataFrame.merge"·title="pandas.DataFrame.merge"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">DataFrame.merge()</span></code></a>·as·the·<code·class="docutils·literal·notranslate"><span·class="pre">on</span></code>,·<code·class="docutils·literal·notranslate"><span·class="pre">left_on</span></code>,·and·<code·class="docutils·literal·notranslate"><span·class="pre">right_on</span></code>
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902 <span·class="gp">In·[21]:·</span><span·class="n">left</span><span·class="o">.</span><span·class="n">merge</span><span·class="p">(</span><span·class="n">right</span><span·class="p">,</span>·<span·class="n">on</span><span·class="o">=</span><span·class="p">[</span><span·class="s1">&#39;key1&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;key2&#39;</span><span·class="p">])</span>890 <span·class="gp">In·[21]:·</span><span·class="n">left</span><span·class="o">.</span><span·class="n">merge</span><span·class="p">(</span><span·class="n">right</span><span·class="p">,</span>·<span·class="n">on</span><span·class="o">=</span><span·class="p">[</span><span·class="s1">&#39;key1&#39;</span><span·class="p">,</span>·<span·class="s1">&#39;key2&#39;</span><span·class="p">])</span>
903 <span·class="gh">Out[21]:·</span>891 <span·class="gh">Out[21]:·</span>
904 <span·class="go">·······A···B·key2···C···D</span>892 <span·class="go">·······A···B·key2···C···D</span>
905 <span·class="go">key1·····················</span>893 <span·class="go">key1·····················</span>
906 <span·class="go">K0····A0··B0···K0··C0··D0</span>894 <span·class="go">K0····A0··B0···K0··C0··D0</span>
907 <span·class="go">K1····A2··B2···K0··C1··D1</span>895 <span·class="go">K1····A2··B2···K0··C1··D1</span>
908 <span·class="go">K2····A3··B3···K1··C3··D3</span>896 <span·class="go">K2····A3··B3···K1··C3··D3</span>
  
909 <span·class="go">[3·rows·x·5·columns]</span> 
910 </pre></div>897 </pre></div>
911 </div>898 </div>
912 </section>899 </section>
913 <section·id="sorting-by-a-combination-of-columns-and-index-levels">900 <section·id="sorting-by-a-combination-of-columns-and-index-levels">
914 <span·id="whatsnew-0230-enhancements-sort-by-columns-and-levels"></span><h3>Sorting·by·a·combination·of·columns·and·index·levels<a·class="headerlink"·href="#sorting-by-a-combination-of-columns-and-index-levels"·title="Link·to·this·heading">#</a></h3>901 <span·id="whatsnew-0230-enhancements-sort-by-columns-and-levels"></span><h3>Sorting·by·a·combination·of·columns·and·index·levels<a·class="headerlink"·href="#sorting-by-a-combination-of-columns-and-index-levels"·title="Link·to·this·heading">#</a></h3>
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210 ·····foo·bar········baz·qux210 ·····foo·bar········baz·qux
211 idx211 idx
212 0······1···a·2018-01-01···a212 0······1···a·2018-01-01···a
213 1······2···b·2018-01-02···b213 1······2···b·2018-01-02···b
214 2······3···c·2018-01-03···c214 2······3···c·2018-01-03···c
215 3······4···d·2018-01-04···c215 3······4···d·2018-01-04···c
  
216 [4·rows·x·4·columns] 
  
217 In·[3]:·df.dtypes216 In·[3]:·df.dtypes
218 Out[3]:217 Out[3]:
219 foo·············int64218 foo·············int64
220 bar············object219 bar············object
221 baz····datetime64[ns]220 baz····datetime64[ns]
222 qux··········category221 qux··········category
223 Length:·4,·dtype:·object222 dtype:·object
  
224 In·[4]:·df.to_json('test.json',·orient='table')223 In·[4]:·df.to_json('test.json',·orient='table')
  
225 In·[5]:·new_df·=·pd.read_json('test.json',·orient='table')224 In·[5]:·new_df·=·pd.read_json('test.json',·orient='table')
  
226 In·[6]:·new_df225 In·[6]:·new_df
227 Out[6]:226 Out[6]:
228 ·····foo·bar········baz·qux227 ·····foo·bar········baz·qux
229 idx228 idx
230 0······1···a·2018-01-01···a229 0······1···a·2018-01-01···a
231 1······2···b·2018-01-02···b230 1······2···b·2018-01-02···b
232 2······3···c·2018-01-03···c231 2······3···c·2018-01-03···c
233 3······4···d·2018-01-04···c232 3······4···d·2018-01-04···c
  
234 [4·rows·x·4·columns] 
  
235 In·[7]:·new_df.dtypes233 In·[7]:·new_df.dtypes
236 Out[7]:234 Out[7]:
237 foo·············int64235 foo·············int64
238 bar············object236 bar············object
239 baz····datetime64[ns]237 baz····datetime64[ns]
240 qux··········category238 qux··········category
241 Length:·4,·dtype:·object239 dtype:·object
242 Please·note·that·the·string·index·is·not·supported·with·the·round·trip·format,240 Please·note·that·the·string·index·is·not·supported·with·the·round·trip·format,
243 as·it·is·used·by·default·in·write_json·to·indicate·a·missing·index·name.241 as·it·is·used·by·default·in·write_json·to·indicate·a·missing·index·name.
244 In·[8]:·df.index.name·=·'index'242 In·[8]:·df.index.name·=·'index'
  
245 In·[9]:·df.to_json('test.json',·orient='table')243 In·[9]:·df.to_json('test.json',·orient='table')
  
246 In·[10]:·new_df·=·pd.read_json('test.json',·orient='table')244 In·[10]:·new_df·=·pd.read_json('test.json',·orient='table')
Offset 258, 47 lines modifiedOffset 254, 41 lines modified
258 Out[11]:254 Out[11]:
259 ···foo·bar········baz·qux255 ···foo·bar········baz·qux
260 0····1···a·2018-01-01···a256 0····1···a·2018-01-01···a
261 1····2···b·2018-01-02···b257 1····2···b·2018-01-02···b
262 2····3···c·2018-01-03···c258 2····3···c·2018-01-03···c
263 3····4···d·2018-01-04···c259 3····4···d·2018-01-04···c
  
264 [4·rows·x·4·columns] 
  
265 In·[12]:·new_df.dtypes260 In·[12]:·new_df.dtypes
266 Out[12]:261 Out[12]:
267 foo·············int64262 foo·············int64
268 bar············object263 bar············object
269 baz····datetime64[ns]264 baz····datetime64[ns]
270 qux··········category265 qux··········category
271 Length:·4,·dtype:·object266 dtype:·object
272 *\x8**\x8**\x8**\x8*·M\x8Me\x8et\x8th\x8ho\x8od\x8d·.\x8.a\x8as\x8ss\x8si\x8ig\x8gn\x8n(\x8()\x8)·a\x8ac\x8cc\x8ce\x8ep\x8pt\x8ts\x8s·d\x8de\x8ep\x8pe\x8en\x8nd\x8de\x8en\x8nt\x8t·a\x8ar\x8rg\x8gu\x8um\x8me\x8en\x8nt\x8ts\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*267 *\x8**\x8**\x8**\x8*·M\x8Me\x8et\x8th\x8ho\x8od\x8d·.\x8.a\x8as\x8ss\x8si\x8ig\x8gn\x8n(\x8()\x8)·a\x8ac\x8cc\x8ce\x8ep\x8pt\x8ts\x8s·d\x8de\x8ep\x8pe\x8en\x8nd\x8de\x8en\x8nt\x8t·a\x8ar\x8rg\x8gu\x8um\x8me\x8en\x8nt\x8ts\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*
273 The·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8a_\x8s_\x8s_\x8i_\x8g_\x8n_\x8(_\x8)·now·accepts·dependent·keyword·arguments·for·python268 The·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8a_\x8s_\x8s_\x8i_\x8g_\x8n_\x8(_\x8)·now·accepts·dependent·keyword·arguments·for·python
274 version·later·than·3.6·(see·also·_\x8P_\x8E_\x8P_\x8·_\x84_\x86_\x88).·Later·keyword·arguments·may·now269 version·later·than·3.6·(see·also·_\x8P_\x8E_\x8P_\x8·_\x84_\x86_\x88).·Later·keyword·arguments·may·now
275 refer·to·earlier·ones·if·the·argument·is·a·callable.·See·the·_\x8d_\x8o_\x8c_\x8u_\x8m_\x8e_\x8n_\x8t_\x8a_\x8t_\x8i_\x8o_\x8n_\x8·_\x8h_\x8e_\x8r_\x8e270 refer·to·earlier·ones·if·the·argument·is·a·callable.·See·the·_\x8d_\x8o_\x8c_\x8u_\x8m_\x8e_\x8n_\x8t_\x8a_\x8t_\x8i_\x8o_\x8n_\x8·_\x8h_\x8e_\x8r_\x8e
276 (_\x8G_\x8H_\x8·_\x81_\x84_\x82_\x80_\x87)271 (_\x8G_\x8H_\x8·_\x81_\x84_\x82_\x80_\x87)
277 In·[13]:·df·=·pd.DataFrame({'A':·[1,·2,·3]})272 In·[13]:·df·=·pd.DataFrame({'A':·[1,·2,·3]})
  
278 In·[14]:·df273 In·[14]:·df
279 Out[14]:274 Out[14]:
280 ···A275 ···A
281 0··1276 0··1
282 1··2277 1··2
283 2··3278 2··3
  
284 [3·rows·x·1·columns] 
  
285 In·[15]:·df.assign(B=df.A,·C=lambda·x:·x['A']·+·x['B'])279 In·[15]:·df.assign(B=df.A,·C=lambda·x:·x['A']·+·x['B'])
286 Out[15]:280 Out[15]:
287 ···A··B··C281 ···A··B··C
288 0··1··1··2282 0··1··1··2
289 1··2··2··4283 1··2··2··4
290 2··3··3··6284 2··3··3··6
  
291 [3·rows·x·3·columns] 
292 Warning285 Warning
293 This·may·subtly·change·the·behavior·of·your·code·when·you’re·using·.assign()·to286 This·may·subtly·change·the·behavior·of·your·code·when·you’re·using·.assign()·to
294 update·an·existing·column.·Previously,·callables·referring·to·other·variables287 update·an·existing·column.·Previously,·callables·referring·to·other·variables
295 being·updated·would·get·the·“old”·values288 being·updated·would·get·the·“old”·values
296 Previous·behavior:289 Previous·behavior:
297 In·[2]:·df·=·pd.DataFrame({"A":·[1,·2,·3]})290 In·[2]:·df·=·pd.DataFrame({"A":·[1,·2,·3]})
  
Offset 311, 16 lines modifiedOffset 301, 14 lines modified
311 New·behavior:301 New·behavior:
312 In·[16]:·df.assign(A=df.A·+·1,·C=lambda·df:·df.A·*·-1)302 In·[16]:·df.assign(A=df.A·+·1,·C=lambda·df:·df.A·*·-1)
313 Out[16]:303 Out[16]:
314 ···A··C304 ···A··C
315 0··2·-2305 0··2·-2
316 1··3·-3306 1··3·-3
317 2··4·-4307 2··4·-4
  
318 [3·rows·x·2·columns] 
319 *\x8**\x8**\x8**\x8*·M\x8Me\x8er\x8rg\x8gi\x8in\x8ng\x8g·o\x8on\x8n·a\x8a·c\x8co\x8om\x8mb\x8bi\x8in\x8na\x8at\x8ti\x8io\x8on\x8n·o\x8of\x8f·c\x8co\x8ol\x8lu\x8um\x8mn\x8ns\x8s·a\x8an\x8nd\x8d·i\x8in\x8nd\x8de\x8ex\x8x·l\x8le\x8ev\x8ve\x8el\x8ls\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*308 *\x8**\x8**\x8**\x8*·M\x8Me\x8er\x8rg\x8gi\x8in\x8ng\x8g·o\x8on\x8n·a\x8a·c\x8co\x8om\x8mb\x8bi\x8in\x8na\x8at\x8ti\x8io\x8on\x8n·o\x8of\x8f·c\x8co\x8ol\x8lu\x8um\x8mn\x8ns\x8s·a\x8an\x8nd\x8d·i\x8in\x8nd\x8de\x8ex\x8x·l\x8le\x8ev\x8ve\x8el\x8ls\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*
320 Strings·passed·to·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8m_\x8e_\x8r_\x8g_\x8e_\x8(_\x8)·as·the·on,·left_on,·and·right_on·parameters309 Strings·passed·to·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8m_\x8e_\x8r_\x8g_\x8e_\x8(_\x8)·as·the·on,·left_on,·and·right_on·parameters
321 may·now·refer·to·either·column·names·or·index·level·names.·This·enables·merging310 may·now·refer·to·either·column·names·or·index·level·names.·This·enables·merging
322 DataFrame·instances·on·a·combination·of·index·levels·and·columns·without311 DataFrame·instances·on·a·combination·of·index·levels·and·columns·without
323 resetting·indexes.·See·the·_\x8M_\x8e_\x8r_\x8g_\x8e_\x8·_\x8o_\x8n_\x8·_\x8c_\x8o_\x8l_\x8u_\x8m_\x8n_\x8s_\x8·_\x8a_\x8n_\x8d_\x8·_\x8l_\x8e_\x8v_\x8e_\x8l_\x8s·documentation·section.312 resetting·indexes.·See·the·_\x8M_\x8e_\x8r_\x8g_\x8e_\x8·_\x8o_\x8n_\x8·_\x8c_\x8o_\x8l_\x8u_\x8m_\x8n_\x8s_\x8·_\x8a_\x8n_\x8d_\x8·_\x8l_\x8e_\x8v_\x8e_\x8l_\x8s·documentation·section.
324 (_\x8G_\x8H_\x8·_\x81_\x84_\x83_\x85_\x85)313 (_\x8G_\x8H_\x8·_\x81_\x84_\x83_\x85_\x85)
325 In·[17]:·left_index·=·pd.Index(['K0',·'K0',·'K1',·'K2'],·name='key1')314 In·[17]:·left_index·=·pd.Index(['K0',·'K0',·'K1',·'K2'],·name='key1')
Offset 342, 16 lines modifiedOffset 330, 14 lines modified
342 In·[21]:·left.merge(right,·on=['key1',·'key2'])330 In·[21]:·left.merge(right,·on=['key1',·'key2'])
343 Out[21]:331 Out[21]:
344 ·······A···B·key2···C···D332 ·······A···B·key2···C···D
345 key1333 key1
346 K0····A0··B0···K0··C0··D0334 K0····A0··B0···K0··C0··D0
347 K1····A2··B2···K0··C1··D1335 K1····A2··B2···K0··C1··D1
348 K2····A3··B3···K1··C3··D3336 K2····A3··B3···K1··C3··D3
  
349 [3·rows·x·5·columns] 
350 *\x8**\x8**\x8**\x8*·S\x8So\x8or\x8rt\x8ti\x8in\x8ng\x8g·b\x8by\x8y·a\x8a·c\x8co\x8om\x8mb\x8bi\x8in\x8na\x8at\x8ti\x8io\x8on\x8n·o\x8of\x8f·c\x8co\x8ol\x8lu\x8um\x8mn\x8ns\x8s·a\x8an\x8nd\x8d·i\x8in\x8nd\x8de\x8ex\x8x·l\x8le\x8ev\x8ve\x8el\x8ls\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*337 *\x8**\x8**\x8**\x8*·S\x8So\x8or\x8rt\x8ti\x8in\x8ng\x8g·b\x8by\x8y·a\x8a·c\x8co\x8om\x8mb\x8bi\x8in\x8na\x8at\x8ti\x8io\x8on\x8n·o\x8of\x8f·c\x8co\x8ol\x8lu\x8um\x8mn\x8ns\x8s·a\x8an\x8nd\x8d·i\x8in\x8nd\x8de\x8ex\x8x·l\x8le\x8ev\x8ve\x8el\x8ls\x8s_\x8#\x8#·*\x8**\x8**\x8**\x8*
351 Strings·passed·to·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8s_\x8o_\x8r_\x8t_\x8__\x8v_\x8a_\x8l_\x8u_\x8e_\x8s_\x8(_\x8)·as·the·by·parameter·may·now·refer·to338 Strings·passed·to·_\x8D_\x8a_\x8t_\x8a_\x8F_\x8r_\x8a_\x8m_\x8e_\x8._\x8s_\x8o_\x8r_\x8t_\x8__\x8v_\x8a_\x8l_\x8u_\x8e_\x8s_\x8(_\x8)·as·the·by·parameter·may·now·refer·to
352 either·column·names·or·index·level·names.·This·enables·sorting·DataFrame339 either·column·names·or·index·level·names.·This·enables·sorting·DataFrame
353 instances·by·a·combination·of·index·levels·and·columns·without·resetting340 instances·by·a·combination·of·index·levels·and·columns·without·resetting
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820 a·new·ndarray·of·period·objects·each·time.</p>820 a·new·ndarray·of·period·objects·each·time.</p>
821 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[18]:·</span><span·class="n">idx</span><span·class="o">.</span><span·class="n">values</span>821 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[18]:·</span><span·class="n">idx</span><span·class="o">.</span><span·class="n">values</span>
822 <span·class="gh">Out[18]:·</span>822 <span·class="gh">Out[18]:·</span>
823 <span·class="go">array([Period(&#39;2000-01-01&#39;,·&#39;D&#39;),·Period(&#39;2000-01-02&#39;,·&#39;D&#39;),</span>823 <span·class="go">array([Period(&#39;2000-01-01&#39;,·&#39;D&#39;),·Period(&#39;2000-01-02&#39;,·&#39;D&#39;),</span>
824 <span·class="go">·······Period(&#39;2000-01-03&#39;,·&#39;D&#39;),·Period(&#39;2000-01-04&#39;,·&#39;D&#39;)],·dtype=object)</span>824 <span·class="go">·······Period(&#39;2000-01-03&#39;,·&#39;D&#39;),·Period(&#39;2000-01-04&#39;,·&#39;D&#39;)],·dtype=object)</span>
  
825 <span·class="gp">In·[19]:·</span><span·class="nb">id</span><span·class="p">(</span><span·class="n">idx</span><span·class="o">.</span><span·class="n">values</span><span·class="p">)</span>825 <span·class="gp">In·[19]:·</span><span·class="nb">id</span><span·class="p">(</span><span·class="n">idx</span><span·class="o">.</span><span·class="n">values</span><span·class="p">)</span>
826 <span·class="gh">Out[19]:·</span><span·class="go">140563155865584</span>826 <span·class="gh">Out[19]:·</span><span·class="go">140153632865808</span>
  
827 <span·class="gp">In·[20]:·</span><span·class="nb">id</span><span·class="p">(</span><span·class="n">idx</span><span·class="o">.</span><span·class="n">values</span><span·class="p">)</span>827 <span·class="gp">In·[20]:·</span><span·class="nb">id</span><span·class="p">(</span><span·class="n">idx</span><span·class="o">.</span><span·class="n">values</span><span·class="p">)</span>
828 <span·class="gh">Out[20]:·</span><span·class="go">140563155865584</span>828 <span·class="gh">Out[20]:·</span><span·class="go">140153632865808</span>
829 </pre></div>829 </pre></div>
830 </div>830 </div>
831 <p>If·you·need·an·actual·NumPy·array,·use·<a·class="reference·internal"·href="../reference/api/pandas.Series.to_numpy.html#pandas.Series.to_numpy"·title="pandas.Series.to_numpy"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">Series.to_numpy()</span></code></a>·or·<code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">Index.to_numpy()</span></code>.</p>831 <p>If·you·need·an·actual·NumPy·array,·use·<a·class="reference·internal"·href="../reference/api/pandas.Series.to_numpy.html#pandas.Series.to_numpy"·title="pandas.Series.to_numpy"><code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">Series.to_numpy()</span></code></a>·or·<code·class="xref·py·py-meth·docutils·literal·notranslate"><span·class="pre">Index.to_numpy()</span></code>.</p>
832 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[21]:·</span><span·class="n">idx</span><span·class="o">.</span><span·class="n">to_numpy</span><span·class="p">()</span>832 <div·class="highlight-ipython·notranslate"><div·class="highlight"><pre><span></span><span·class="gp">In·[21]:·</span><span·class="n">idx</span><span·class="o">.</span><span·class="n">to_numpy</span><span·class="p">()</span>
833 <span·class="gh">Out[21]:·</span>833 <span·class="gh">Out[21]:·</span>
834 <span·class="go">array([Period(&#39;2000-01-01&#39;,·&#39;D&#39;),·Period(&#39;2000-01-02&#39;,·&#39;D&#39;),</span>834 <span·class="go">array([Period(&#39;2000-01-01&#39;,·&#39;D&#39;),·Period(&#39;2000-01-02&#39;,·&#39;D&#39;),</span>
835 <span·class="go">·······Period(&#39;2000-01-03&#39;,·&#39;D&#39;),·Period(&#39;2000-01-04&#39;,·&#39;D&#39;)],·dtype=object)</span>835 <span·class="go">·······Period(&#39;2000-01-03&#39;,·&#39;D&#39;),·Period(&#39;2000-01-04&#39;,·&#39;D&#39;)],·dtype=object)</span>
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271 array([Period('2000-01-01',·'D'),·Period('2000-01-02',·'D'),271 array([Period('2000-01-01',·'D'),·Period('2000-01-02',·'D'),
272 ·······Period('2000-01-03',·'D'),·Period('2000-01-04',·'D')],·dtype=object)272 ·······Period('2000-01-03',·'D'),·Period('2000-01-04',·'D')],·dtype=object)
  
273 In·[19]:·id(idx.values)273 In·[19]:·id(idx.values)
274 Out[19]:·140563155865584274 Out[19]:·140153632865808
  
275 In·[20]:·id(idx.values)275 In·[20]:·id(idx.values)
276 Out[20]:·140563155865584276 Out[20]:·140153632865808
277 If·you·need·an·actual·NumPy·array,·use·_\x8S_\x8e_\x8r_\x8i_\x8e_\x8s_\x8._\x8t_\x8o_\x8__\x8n_\x8u_\x8m_\x8p_\x8y_\x8(_\x8)·or·Index.to_numpy().277 If·you·need·an·actual·NumPy·array,·use·_\x8S_\x8e_\x8r_\x8i_\x8e_\x8s_\x8._\x8t_\x8o_\x8__\x8n_\x8u_\x8m_\x8p_\x8y_\x8(_\x8)·or·Index.to_numpy().
278 In·[21]:·idx.to_numpy()278 In·[21]:·idx.to_numpy()
279 Out[21]:279 Out[21]:
280 array([Period('2000-01-01',·'D'),·Period('2000-01-02',·'D'),280 array([Period('2000-01-01',·'D'),·Period('2000-01-02',·'D'),
281 ·······Period('2000-01-03',·'D'),·Period('2000-01-04',·'D')],·dtype=object)281 ·······Period('2000-01-03',·'D'),·Period('2000-01-04',·'D')],·dtype=object)
  
282 In·[22]:·pd.Series(idx).to_numpy()282 In·[22]:·pd.Series(idx).to_numpy()
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8 -rw-r--r--···0·root·········(0)·root·········(0)···564784·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/04/b07377d371d83b778ee451c125760837309988.debug8 -rw-r--r--···0·root·········(0)·root·········(0)···564784·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/04/b07377d371d83b778ee451c125760837309988.debug
 9 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/09/
 10 -rw-r--r--···0·root·········(0)·root·········(0)··1119952·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/09/f3d8adc16783bdf164e9288a3823e5d4c8fae2.debug
9 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/0c/11 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/0c/
10 -rw-r--r--···0·root·········(0)·root·········(0)··2094256·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/0c/4b8f9a535d1d6129fdaec859fd08926840a746.debug12 -rw-r--r--···0·root·········(0)·root·········(0)··2094256·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/0c/4b8f9a535d1d6129fdaec859fd08926840a746.debug
11 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/10/13 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/10/
12 -rw-r--r--···0·root·········(0)·root·········(0)····41928·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/10/2134e0d73407c4f7dad94c17dec4397228d3aa.debug14 -rw-r--r--···0·root·········(0)·root·········(0)····41928·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/10/2134e0d73407c4f7dad94c17dec4397228d3aa.debug
13 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/13/15 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/13/
14 -rw-r--r--···0·root·········(0)·root·········(0)···491432·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/13/af0762b290d571736daf766c312703e2b7874e.debug16 -rw-r--r--···0·root·········(0)·root·········(0)···491432·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/13/af0762b290d571736daf766c312703e2b7874e.debug
15 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/16/17 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/16/
Offset 74, 15 lines modifiedOffset 76, 14 lines modified
74 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/e0/76 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/e0/
75 -rw-r--r--···0·root·········(0)·root·········(0)···610176·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/e0/32c4131950d9bab8ff55a7acec2fa0e6445169.debug77 -rw-r--r--···0·root·········(0)·root·········(0)···610176·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/e0/32c4131950d9bab8ff55a7acec2fa0e6445169.debug
76 -rw-r--r--···0·root·········(0)·root·········(0)···788824·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/e0/d07a017dc945b54be3aedfbf3e271100569711.debug78 -rw-r--r--···0·root·········(0)·root·········(0)···788824·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/e0/d07a017dc945b54be3aedfbf3e271100569711.debug
77 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/e7/79 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/e7/
78 -rw-r--r--···0·root·········(0)·root·········(0)···435856·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/e7/47a942defa01f48f20bc75d5297d21dde721f7.debug80 -rw-r--r--···0·root·········(0)·root·········(0)···435856·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/e7/47a942defa01f48f20bc75d5297d21dde721f7.debug
79 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/ec/81 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/ec/
80 -rw-r--r--···0·root·········(0)·root·········(0)···192832·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/ec/3915cda4671dcc8f66e3352e3aafec6d3d8599.debug82 -rw-r--r--···0·root·········(0)·root·········(0)···192832·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/ec/3915cda4671dcc8f66e3352e3aafec6d3d8599.debug
81 -rw-r--r--···0·root·········(0)·root·········(0)··1119992·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/ec/acf7ddbac63f4c1fda2ea2d6abde602204414d.debug 
82 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/ed/83 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/ed/
83 -rw-r--r--···0·root·········(0)·root·········(0)····97680·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/ed/85e58d1aa16f4384cac751e38ce98049c4ca02.debug84 -rw-r--r--···0·root·········(0)·root·········(0)····97680·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/ed/85e58d1aa16f4384cac751e38ce98049c4ca02.debug
84 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/f5/85 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/f5/
85 -rw-r--r--···0·root·········(0)·root·········(0)···230000·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/f5/1de05d2c6f212afc00e62bf6d0db3da619564d.debug86 -rw-r--r--···0·root·········(0)·root·········(0)···230000·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/f5/1de05d2c6f212afc00e62bf6d0db3da619564d.debug
86 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/f6/87 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/f6/
87 -rw-r--r--···0·root·········(0)·root·········(0)···597384·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/f6/fc752ae1425e6eebc3eba6331ebd71738e4140.debug88 -rw-r--r--···0·root·········(0)·root·········(0)···597384·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/f6/fc752ae1425e6eebc3eba6331ebd71738e4140.debug
88 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/f9/89 drwxr-xr-x···0·root·········(0)·root·········(0)········0·2025-03-29·13:01:52.000000·./usr/lib/debug/.build-id/f9/
20.1 MB
./usr/lib/debug/.build-id/ec/acf7ddbac63f4c1fda2ea2d6abde602204414d.debug vs.
./usr/lib/debug/.build-id/09/f3d8adc16783bdf164e9288a3823e5d4c8fae2.debug
File has been modified after NT_GNU_BUILD_ID has been applied. Files 91% similar despite different names
887 B
readelf --wide --file-header {}
    
Offset 6, 15 lines modifiedOffset 6, 15 lines modified
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8 ··Type:······························DYN·(Shared·object·file)8 ··Type:······························DYN·(Shared·object·file)
9 ··Machine:···························Advanced·Micro·Devices·X86-649 ··Machine:···························Advanced·Micro·Devices·X86-64
10 ··Version:···························0x110 ··Version:···························0x1
11 ··Entry·point·address:···············0x011 ··Entry·point·address:···············0x0
12 ··Start·of·program·headers:··········64·(bytes·into·file)12 ··Start·of·program·headers:··········64·(bytes·into·file)
13 ··Start·of·section·headers:··········1117624·(bytes·into·file)13 ··Start·of·section·headers:··········1117584·(bytes·into·file)
14 ··Flags:·····························0x014 ··Flags:·····························0x0
15 ··Size·of·this·header:···············64·(bytes)15 ··Size·of·this·header:···············64·(bytes)
16 ··Size·of·program·headers:···········56·(bytes)16 ··Size·of·program·headers:···········56·(bytes)
17 ··Number·of·program·headers:·········917 ··Number·of·program·headers:·········9
18 ··Size·of·section·headers:···········64·(bytes)18 ··Size·of·section·headers:···········64·(bytes)
19 ··Number·of·section·headers:·········3719 ··Number·of·section·headers:·········37
20 ··Section·header·string·table·index:·3620 ··Section·header·string·table·index:·36
3.48 KB
readelf --wide --sections {}
    
Offset 1, 8 lines modifiedOffset 1, 8 lines modified
1 There·are·37·section·headers,·starting·at·offset·0x110db8:1 There·are·37·section·headers,·starting·at·offset·0x110d90:
  
2 Section·Headers:2 Section·Headers:
3 ··[Nr]·Name··············Type············Address··········Off····Size···ES·Flg·Lk·Inf·Al3 ··[Nr]·Name··············Type············Address··········Off····Size···ES·Flg·Lk·Inf·Al
4 ··[·0]···················NULL············0000000000000000·000000·000000·00······0···0··04 ··[·0]···················NULL············0000000000000000·000000·000000·00······0···0··0
5 ··[·1]·.note.gnu.build-id·NOTE············0000000000000238·000238·000024·00···A··0···0··45 ··[·1]·.note.gnu.build-id·NOTE············0000000000000238·000238·000024·00···A··0···0··4
6 ··[·2]·.gnu.hash·········NOBITS··········0000000000000260·00025c·000028·00···A··3···0··86 ··[·2]·.gnu.hash·········NOBITS··········0000000000000260·00025c·000028·00···A··3···0··8
7 ··[·3]·.dynsym···········NOBITS··········0000000000000288·00025c·0015f0·18···A··4···1··87 ··[·3]·.dynsym···········NOBITS··········0000000000000288·00025c·0015f0·18···A··4···1··8
Offset 24, 23 lines modifiedOffset 24, 23 lines modified
24 ··[19]·.data.rel.ro······NOBITS··········00000000000935b0·0005a0·001118·00··WA··0···0··824 ··[19]·.data.rel.ro······NOBITS··········00000000000935b0·0005a0·001118·00··WA··0···0··8
25 ··[20]·.dynamic··········NOBITS··········00000000000946c8·0005a0·0001e0·10··WA··4···0··825 ··[20]·.dynamic··········NOBITS··········00000000000946c8·0005a0·0001e0·10··WA··4···0··8
26 ··[21]·.got··············NOBITS··········00000000000948a8·0005a0·000758·08··WA··0···0··826 ··[21]·.got··············NOBITS··········00000000000948a8·0005a0·000758·08··WA··0···0··8
27 ··[22]·.data·············NOBITS··········0000000000095000·0005a0·002528·00··WA··0···0·3227 ··[22]·.data·············NOBITS··········0000000000095000·0005a0·002528·00··WA··0···0·32
28 ··[23]·.bss··············NOBITS··········0000000000097540·0005a0·001c30·00··WA··0···0·3228 ··[23]·.bss··············NOBITS··········0000000000097540·0005a0·001c30·00··WA··0···0·32
29 ··[24]·.comment··········PROGBITS········0000000000000000·00025c·00001f·01··MS··0···0··129 ··[24]·.comment··········PROGBITS········0000000000000000·00025c·00001f·01··MS··0···0··1
30 ··[25]·.debug_aranges····PROGBITS········0000000000000000·000280·00003d·00···C··0···0··830 ··[25]·.debug_aranges····PROGBITS········0000000000000000·000280·00003d·00···C··0···0··8
31 ··[26]·.debug_info·······PROGBITS········0000000000000000·0002c0·06525c·00···C··0···0··831 ··[26]·.debug_info·······PROGBITS········0000000000000000·0002c0·06523d·00···C··0···0··8
32 ··[27]·.debug_abbrev·····PROGBITS········0000000000000000·065520·0006db·00···C··0···0··832 ··[27]·.debug_abbrev·····PROGBITS········0000000000000000·065500·0006db·00···C··0···0··8
33 ··[28]·.debug_line·······PROGBITS········0000000000000000·065c00·02da29·00···C··0···0··833 ··[28]·.debug_line·······PROGBITS········0000000000000000·065be0·02da29·00···C··0···0··8
34 ··[29]·.debug_str········PROGBITS········0000000000000000·093630·000ffc·01·MSC··0···0··834 ··[29]·.debug_str········PROGBITS········0000000000000000·093610·000ffc·01·MSC··0···0··8
35 ··[30]·.debug_line_str···PROGBITS········0000000000000000·094630·00020b·01·MSC··0···0··835 ··[30]·.debug_line_str···PROGBITS········0000000000000000·094610·00020b·01·MSC··0···0··8
36 ··[31]·.debug_loclists···PROGBITS········0000000000000000·094840·058a02·00···C··0···0··836 ··[31]·.debug_loclists···PROGBITS········0000000000000000·094820·0589fa·00···C··0···0··8
37 ··[32]·.debug_rnglists···PROGBITS········0000000000000000·0ed248·00e5fe·00···C··0···0··837 ··[32]·.debug_rnglists···PROGBITS········0000000000000000·0ed220·00e5fe·00···C··0···0··8
38 ··[33]·.gnu_debugaltlink·PROGBITS········0000000000000000·0fb846·000052·00······0···0··138 ··[33]·.gnu_debugaltlink·PROGBITS········0000000000000000·0fb81e·000052·00······0···0··1
39 ··[34]·.symtab···········SYMTAB··········0000000000000000·0fb898·008fd0·18·····35·1301··839 ··[34]·.symtab···········SYMTAB··········0000000000000000·0fb870·008fd0·18·····35·1301··8
40 ··[35]·.strtab···········STRTAB··········0000000000000000·104868·00c3d5·00······0···0··140 ··[35]·.strtab···········STRTAB··········0000000000000000·104840·00c3d5·00······0···0··1
41 ··[36]·.shstrtab·········STRTAB··········0000000000000000·110c3d·000177·00······0···0··141 ··[36]·.shstrtab·········STRTAB··········0000000000000000·110c15·000177·00······0···0··1
42 Key·to·Flags:42 Key·to·Flags:
43 ··W·(write),·A·(alloc),·X·(execute),·M·(merge),·S·(strings),·I·(info),43 ··W·(write),·A·(alloc),·X·(execute),·M·(merge),·S·(strings),·I·(info),
44 ··L·(link·order),·O·(extra·OS·processing·required),·G·(group),·T·(TLS),44 ··L·(link·order),·O·(extra·OS·processing·required),·G·(group),·T·(TLS),
45 ··C·(compressed),·x·(unknown),·o·(OS·specific),·E·(exclude),45 ··C·(compressed),·x·(unknown),·o·(OS·specific),·E·(exclude),
46 ··D·(mbind),·l·(large),·p·(processor·specific)46 ··D·(mbind),·l·(large),·p·(processor·specific)
430 B
readelf --wide --notes {}
    
Offset 1, 4 lines modifiedOffset 1, 4 lines modified
  
1 Displaying·notes·found·in:·.note.gnu.build-id1 Displaying·notes·found·in:·.note.gnu.build-id
2 ··Owner················Data·size·»  Description2 ··Owner················Data·size·»  Description
3 ··GNU··················0x00000014»  NT_GNU_BUILD_ID·(unique·build·ID·bitstring)»   ····Build·ID:·ecacf7ddbac63f4c1fda2ea2d6abde602204414d3 ··GNU··················0x00000014»  NT_GNU_BUILD_ID·(unique·build·ID·bitstring)»   ····Build·ID:·09f3d8adc16783bdf164e9288a3823e5d4c8fae2
20.1 MB
readelf --wide --debug-dump=info {}
    
Offset 1, 11 lines modifiedOffset 1, 11 lines modified
1 Contents·of·the·.debug_info·section:1 Contents·of·the·.debug_info·section:
  
2 ··Compilation·Unit·@·offset·0:2 ··Compilation·Unit·@·offset·0:
3 ···Length:········0xd45cd·(32-bit)3 ···Length:········0xd45cb·(32-bit)
4 ···Version:·······54 ···Version:·······5
5 ···Unit·Type:·····DW_UT_compile·(1)5 ···Unit·Type:·····DW_UT_compile·(1)
6 ···Abbrev·Offset:·06 ···Abbrev·Offset:·0
7 ···Pointer·Size:··87 ···Pointer·Size:··8
8 ·<0><c>:·Abbrev·Number:·230·(DW_TAG_compile_unit)8 ·<0><c>:·Abbrev·Number:·230·(DW_TAG_compile_unit)
9 ····<e>···DW_AT_producer····:·(GNU_strp_alt)·(offset:·0x18231)·9 ····<e>···DW_AT_producer····:·(GNU_strp_alt)·(offset:·0x18231)·
10 ····<12>···DW_AT_language····:·(data1)·29»   (C11)10 ····<12>···DW_AT_language····:·(data1)·29»   (C11)
Offset 15305, 15 lines modifiedOffset 15305, 15 lines modified
15305 ·<7><94fa>:·Abbrev·Number:·2·(DW_TAG_call_site_parameter)15305 ·<7><94fa>:·Abbrev·Number:·2·(DW_TAG_call_site_parameter)
15306 ····<94fb>···DW_AT_location····:·(exprloc)·1·byte·block:·54·»    (DW_OP_reg4·(rsi))15306 ····<94fb>···DW_AT_location····:·(exprloc)·1·byte·block:·54·»    (DW_OP_reg4·(rsi))
15307 ····<94fd>···DW_AT_call_value··:·(exprloc)·9·byte·block:·3·5e·c8·7·0·0·0·0·0·» (DW_OP_addr:·7c85e)15307 ····<94fd>···DW_AT_call_value··:·(exprloc)·9·byte·block:·3·5e·c8·7·0·0·0·0·0·» (DW_OP_addr:·7c85e)
15308 ·<7><9507>:·Abbrev·Number:·015308 ·<7><9507>:·Abbrev·Number:·0
15309 ·<6><9508>:·Abbrev·Number:·015309 ·<6><9508>:·Abbrev·Number:·0
15310 ·<5><9509>:·Abbrev·Number:·22·(DW_TAG_call_site)15310 ·<5><9509>:·Abbrev·Number:·22·(DW_TAG_call_site)
15311 ····<950a>···DW_AT_call_return_pc:·(addr)·0x2869d15311 ····<950a>···DW_AT_call_return_pc:·(addr)·0x2869d
15312 ····<9512>···DW_AT_call_origin·:·(ref_udata)·<0xc55be>15312 ····<9512>···DW_AT_call_origin·:·(ref_udata)·<0xc55bc>
15313 ·<6><9515>:·Abbrev·Number:·2·(DW_TAG_call_site_parameter)15313 ·<6><9515>:·Abbrev·Number:·2·(DW_TAG_call_site_parameter)
15314 ····<9516>···DW_AT_location····:·(exprloc)·1·byte·block:·55·»    (DW_OP_reg5·(rdi))15314 ····<9516>···DW_AT_location····:·(exprloc)·1·byte·block:·55·»    (DW_OP_reg5·(rdi))
15315 ····<9518>···DW_AT_call_value··:·(exprloc)·2·byte·block:·73·0·» (DW_OP_breg3·(rbx):·0)15315 ····<9518>···DW_AT_call_value··:·(exprloc)·2·byte·block:·73·0·» (DW_OP_breg3·(rbx):·0)
15316 ·<6><951b>:·Abbrev·Number:·18·(DW_TAG_call_site_parameter)15316 ·<6><951b>:·Abbrev·Number:·18·(DW_TAG_call_site_parameter)
15317 ····<951c>···DW_AT_call_parameter:·(ref_udata)·<0x8696>15317 ····<951c>···DW_AT_call_parameter:·(ref_udata)·<0x8696>
15318 ····<951f>···DW_AT_call_value··:·(exprloc)·9·byte·block:·3·a5·c6·7·0·0·0·0·0·» (DW_OP_addr:·7c6a5)15318 ····<951f>···DW_AT_call_value··:·(exprloc)·9·byte·block:·3·a5·c6·7·0·0·0·0·0·» (DW_OP_addr:·7c6a5)
15319 ·<6><9529>:·Abbrev·Number:·015319 ·<6><9529>:·Abbrev·Number:·0
Offset 15500, 29 lines modifiedOffset 15500, 29 lines modified
15500 ····<96a9>···DW_AT_name········:·(GNU_strp_alt)·(offset:·0x1435b)·15500 ····<96a9>···DW_AT_name········:·(GNU_strp_alt)·(offset:·0x1435b)·
15501 ····<96ad>···DW_AT_decl_file···:·(implicit_const)·115501 ····<96ad>···DW_AT_decl_file···:·(implicit_const)·1
15502 ····<96ad>···DW_AT_decl_line···:·(data4)·0x1174515502 ····<96ad>···DW_AT_decl_line···:·(data4)·0x11745
15503 ····<96b1>···DW_AT_decl_column·:·(data1)·1315503 ····<96b1>···DW_AT_decl_column·:·(data1)·13
15504 ····<96b2>···DW_AT_type········:·(ref_udata)·<0xa1b>15504 ····<96b2>···DW_AT_type········:·(ref_udata)·<0xa1b>
15505 ·<4><96b4>:·Abbrev·Number:·015505 ·<4><96b4>:·Abbrev·Number:·0
15506 ·<3><96b5>:·Abbrev·Number:·129·(DW_TAG_inlined_subroutine)15506 ·<3><96b5>:·Abbrev·Number:·129·(DW_TAG_inlined_subroutine)
15507 ····<96b7>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f0e>15507 ····<96b7>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f0c>
15508 ····<96ba>···DW_AT_entry_pc····:·(addr)·0x285d015508 ····<96ba>···DW_AT_entry_pc····:·(addr)·0x285d0
15509 ····<96c2>···DW_AT_GNU_entry_view:·(data2)·215509 ····<96c2>···DW_AT_GNU_entry_view:·(data2)·2
15510 ····<96c4>···DW_AT_ranges······:·(sec_offset)·0x1bdd15510 ····<96c4>···DW_AT_ranges······:·(sec_offset)·0x1bdd
15511 ····<96c8>···DW_AT_call_file···:·(implicit_const)·115511 ····<96c8>···DW_AT_call_file···:·(implicit_const)·1
15512 ····<96c8>···DW_AT_call_line···:·(data4)·0x1174515512 ····<96c8>···DW_AT_call_line···:·(data4)·0x11745
15513 ····<96cc>···DW_AT_call_column·:·(data1)·1315513 ····<96cc>···DW_AT_call_column·:·(data1)·13
15514 ·<4><96cd>:·Abbrev·Number:·4·(DW_TAG_formal_parameter)15514 ·<4><96cd>:·Abbrev·Number:·4·(DW_TAG_formal_parameter)
15515 ····<96ce>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f1e>15515 ····<96ce>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f1c>
15516 ····<96d1>···DW_AT_location····:·(sec_offset)·0x53f·(location·list)15516 ····<96d1>···DW_AT_location····:·(sec_offset)·0x53f·(location·list)
15517 ····<96d5>···DW_AT_GNU_locviews:·(sec_offset)·0x53d15517 ····<96d5>···DW_AT_GNU_locviews:·(sec_offset)·0x53d
15518 ·<4><96d9>:·Abbrev·Number:·11·(DW_TAG_lexical_block)15518 ·<4><96d9>:·Abbrev·Number:·11·(DW_TAG_lexical_block)
15519 ····<96da>···DW_AT_ranges······:·(sec_offset)·0x1bdd15519 ····<96da>···DW_AT_ranges······:·(sec_offset)·0x1bdd
15520 ·<5><96de>:·Abbrev·Number:·36·(DW_TAG_variable)15520 ·<5><96de>:·Abbrev·Number:·36·(DW_TAG_variable)
15521 ····<96df>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f29>15521 ····<96df>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f27>
15522 ·<5><96e2>:·Abbrev·Number:·015522 ·<5><96e2>:·Abbrev·Number:·0
15523 ·<4><96e3>:·Abbrev·Number:·015523 ·<4><96e3>:·Abbrev·Number:·0
15524 ·<3><96e4>:·Abbrev·Number:·015524 ·<3><96e4>:·Abbrev·Number:·0
15525 ·<2><96e5>:·Abbrev·Number:·34·(DW_TAG_lexical_block)15525 ·<2><96e5>:·Abbrev·Number:·34·(DW_TAG_lexical_block)
15526 ····<96e6>···DW_AT_ranges······:·(sec_offset)·0x1bef15526 ····<96e6>···DW_AT_ranges······:·(sec_offset)·0x1bef
15527 ····<96ea>···DW_AT_sibling·····:·(ref_udata)·<0x97d1>15527 ····<96ea>···DW_AT_sibling·····:·(ref_udata)·<0x97d1>
15528 ·<3><96ed>:·Abbrev·Number:·60·(DW_TAG_variable)15528 ·<3><96ed>:·Abbrev·Number:·60·(DW_TAG_variable)
Offset 15750, 25 lines modifiedOffset 15750, 25 lines modified
15750 ····<98e1>···DW_AT_GNU_locviews:·(sec_offset)·0x5f315750 ····<98e1>···DW_AT_GNU_locviews:·(sec_offset)·0x5f3
15751 ·<3><98e5>:·Abbrev·Number:·9·(DW_TAG_variable)15751 ·<3><98e5>:·Abbrev·Number:·9·(DW_TAG_variable)
15752 ····<98e6>···DW_AT_abstract_origin:·(GNU_ref_alt)·<0xf557>15752 ····<98e6>···DW_AT_abstract_origin:·(GNU_ref_alt)·<0xf557>
15753 ····<98ea>···DW_AT_location····:·(sec_offset)·0x607·(location·list)15753 ····<98ea>···DW_AT_location····:·(sec_offset)·0x607·(location·list)
15754 ····<98ee>···DW_AT_GNU_locviews:·(sec_offset)·0x60515754 ····<98ee>···DW_AT_GNU_locviews:·(sec_offset)·0x605
15755 ·<3><98f2>:·Abbrev·Number:·015755 ·<3><98f2>:·Abbrev·Number:·0
15756 ·<2><98f3>:·Abbrev·Number:·87·(DW_TAG_inlined_subroutine)15756 ·<2><98f3>:·Abbrev·Number:·87·(DW_TAG_inlined_subroutine)
15757 ····<98f4>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f4a>15757 ····<98f4>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f48>
15758 ····<98f7>···DW_AT_entry_pc····:·(addr)·0x2854615758 ····<98f7>···DW_AT_entry_pc····:·(addr)·0x28546
15759 ····<98ff>···DW_AT_GNU_entry_view:·(data2)·215759 ····<98ff>···DW_AT_GNU_entry_view:·(data2)·2
15760 ····<9901>···DW_AT_low_pc······:·(addr)·0x2854615760 ····<9901>···DW_AT_low_pc······:·(addr)·0x28546
15761 ····<9909>···DW_AT_high_pc·····:·(udata)·415761 ····<9909>···DW_AT_high_pc·····:·(udata)·4
15762 ····<990a>···DW_AT_call_file···:·(implicit_const)·115762 ····<990a>···DW_AT_call_file···:·(implicit_const)·1
15763 ····<990a>···DW_AT_call_line···:·(data4)·0x1174415763 ····<990a>···DW_AT_call_line···:·(data4)·0x11744
15764 ····<990e>···DW_AT_call_column·:·(data1)·1315764 ····<990e>···DW_AT_call_column·:·(data1)·13
15765 ····<990f>···DW_AT_sibling·····:·(ref_udata)·<0x991f>15765 ····<990f>···DW_AT_sibling·····:·(ref_udata)·<0x991f>
15766 ·<3><9912>:·Abbrev·Number:·4·(DW_TAG_formal_parameter)15766 ·<3><9912>:·Abbrev·Number:·4·(DW_TAG_formal_parameter)
15767 ····<9913>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f5a>15767 ····<9913>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f58>
15768 ····<9916>···DW_AT_location····:·(sec_offset)·0x618·(location·list)15768 ····<9916>···DW_AT_location····:·(sec_offset)·0x618·(location·list)
15769 ····<991a>···DW_AT_GNU_locviews:·(sec_offset)·0x61615769 ····<991a>···DW_AT_GNU_locviews:·(sec_offset)·0x616
15770 ·<3><991e>:·Abbrev·Number:·015770 ·<3><991e>:·Abbrev·Number:·0
15771 ·<2><991f>:·Abbrev·Number:·8·(DW_TAG_call_site)15771 ·<2><991f>:·Abbrev·Number:·8·(DW_TAG_call_site)
15772 ····<9920>···DW_AT_call_return_pc:·(addr)·0x285c015772 ····<9920>···DW_AT_call_return_pc:·(addr)·0x285c0
15773 ····<9928>···DW_AT_call_origin·:·(GNU_ref_alt)·<0xf456>15773 ····<9928>···DW_AT_call_origin·:·(GNU_ref_alt)·<0xf456>
15774 ·<3><992c>:·Abbrev·Number:·2·(DW_TAG_call_site_parameter)15774 ·<3><992c>:·Abbrev·Number:·2·(DW_TAG_call_site_parameter)
Offset 16359, 15 lines modifiedOffset 16359, 15 lines modified
16359 ·<7><9e18>:·Abbrev·Number:·2·(DW_TAG_call_site_parameter)16359 ·<7><9e18>:·Abbrev·Number:·2·(DW_TAG_call_site_parameter)
16360 ····<9e19>···DW_AT_location····:·(exprloc)·1·byte·block:·54·»    (DW_OP_reg4·(rsi))16360 ····<9e19>···DW_AT_location····:·(exprloc)·1·byte·block:·54·»    (DW_OP_reg4·(rsi))
16361 ····<9e1b>···DW_AT_call_value··:·(exprloc)·9·byte·block:·3·5e·c8·7·0·0·0·0·0·» (DW_OP_addr:·7c85e)16361 ····<9e1b>···DW_AT_call_value··:·(exprloc)·9·byte·block:·3·5e·c8·7·0·0·0·0·0·» (DW_OP_addr:·7c85e)
16362 ·<7><9e25>:·Abbrev·Number:·016362 ·<7><9e25>:·Abbrev·Number:·0
16363 ·<6><9e26>:·Abbrev·Number:·016363 ·<6><9e26>:·Abbrev·Number:·0
16364 ·<5><9e27>:·Abbrev·Number:·22·(DW_TAG_call_site)16364 ·<5><9e27>:·Abbrev·Number:·22·(DW_TAG_call_site)
16365 ····<9e28>···DW_AT_call_return_pc:·(addr)·0x284ed16365 ····<9e28>···DW_AT_call_return_pc:·(addr)·0x284ed
16366 ····<9e30>···DW_AT_call_origin·:·(ref_udata)·<0xc55be>16366 ····<9e30>···DW_AT_call_origin·:·(ref_udata)·<0xc55bc>
16367 ·<6><9e33>:·Abbrev·Number:·2·(DW_TAG_call_site_parameter)16367 ·<6><9e33>:·Abbrev·Number:·2·(DW_TAG_call_site_parameter)
16368 ····<9e34>···DW_AT_location····:·(exprloc)·1·byte·block:·55·»    (DW_OP_reg5·(rdi))16368 ····<9e34>···DW_AT_location····:·(exprloc)·1·byte·block:·55·»    (DW_OP_reg5·(rdi))
16369 ····<9e36>···DW_AT_call_value··:·(exprloc)·2·byte·block:·73·0·» (DW_OP_breg3·(rbx):·0)16369 ····<9e36>···DW_AT_call_value··:·(exprloc)·2·byte·block:·73·0·» (DW_OP_breg3·(rbx):·0)
16370 ·<6><9e39>:·Abbrev·Number:·18·(DW_TAG_call_site_parameter)16370 ·<6><9e39>:·Abbrev·Number:·18·(DW_TAG_call_site_parameter)
16371 ····<9e3a>···DW_AT_call_parameter:·(ref_udata)·<0x8696>16371 ····<9e3a>···DW_AT_call_parameter:·(ref_udata)·<0x8696>
16372 ····<9e3d>···DW_AT_call_value··:·(exprloc)·9·byte·block:·3·a5·c6·7·0·0·0·0·0·» (DW_OP_addr:·7c6a5)16372 ····<9e3d>···DW_AT_call_value··:·(exprloc)·9·byte·block:·3·a5·c6·7·0·0·0·0·0·» (DW_OP_addr:·7c6a5)
16373 ·<6><9e47>:·Abbrev·Number:·016373 ·<6><9e47>:·Abbrev·Number:·0
Offset 16554, 29 lines modifiedOffset 16554, 29 lines modified
16554 ····<9fc7>···DW_AT_name········:·(GNU_strp_alt)·(offset:·0x1435b)·16554 ····<9fc7>···DW_AT_name········:·(GNU_strp_alt)·(offset:·0x1435b)·
16555 ····<9fcb>···DW_AT_decl_file···:·(implicit_const)·116555 ····<9fcb>···DW_AT_decl_file···:·(implicit_const)·1
16556 ····<9fcb>···DW_AT_decl_line···:·(data4)·0x1152916556 ····<9fcb>···DW_AT_decl_line···:·(data4)·0x11529
16557 ····<9fcf>···DW_AT_decl_column·:·(data1)·1316557 ····<9fcf>···DW_AT_decl_column·:·(data1)·13
16558 ····<9fd0>···DW_AT_type········:·(ref_udata)·<0xa1b>16558 ····<9fd0>···DW_AT_type········:·(ref_udata)·<0xa1b>
16559 ·<4><9fd2>:·Abbrev·Number:·016559 ·<4><9fd2>:·Abbrev·Number:·0
16560 ·<3><9fd3>:·Abbrev·Number:·129·(DW_TAG_inlined_subroutine)16560 ·<3><9fd3>:·Abbrev·Number:·129·(DW_TAG_inlined_subroutine)
16561 ····<9fd5>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f0e>16561 ····<9fd5>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f0c>
16562 ····<9fd8>···DW_AT_entry_pc····:·(addr)·0x2842016562 ····<9fd8>···DW_AT_entry_pc····:·(addr)·0x28420
16563 ····<9fe0>···DW_AT_GNU_entry_view:·(data2)·216563 ····<9fe0>···DW_AT_GNU_entry_view:·(data2)·2
16564 ····<9fe2>···DW_AT_ranges······:·(sec_offset)·0x1b5c16564 ····<9fe2>···DW_AT_ranges······:·(sec_offset)·0x1b5c
16565 ····<9fe6>···DW_AT_call_file···:·(implicit_const)·116565 ····<9fe6>···DW_AT_call_file···:·(implicit_const)·1
16566 ····<9fe6>···DW_AT_call_line···:·(data4)·0x1152916566 ····<9fe6>···DW_AT_call_line···:·(data4)·0x11529
16567 ····<9fea>···DW_AT_call_column·:·(data1)·1316567 ····<9fea>···DW_AT_call_column·:·(data1)·13
16568 ·<4><9feb>:·Abbrev·Number:·4·(DW_TAG_formal_parameter)16568 ·<4><9feb>:·Abbrev·Number:·4·(DW_TAG_formal_parameter)
16569 ····<9fec>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f1e>16569 ····<9fec>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f1c>
16570 ····<9fef>···DW_AT_location····:·(sec_offset)·0x7a4·(location·list)16570 ····<9fef>···DW_AT_location····:·(sec_offset)·0x7a4·(location·list)
16571 ····<9ff3>···DW_AT_GNU_locviews:·(sec_offset)·0x7a216571 ····<9ff3>···DW_AT_GNU_locviews:·(sec_offset)·0x7a2
16572 ·<4><9ff7>:·Abbrev·Number:·11·(DW_TAG_lexical_block)16572 ·<4><9ff7>:·Abbrev·Number:·11·(DW_TAG_lexical_block)
16573 ····<9ff8>···DW_AT_ranges······:·(sec_offset)·0x1b5c16573 ····<9ff8>···DW_AT_ranges······:·(sec_offset)·0x1b5c
16574 ·<5><9ffc>:·Abbrev·Number:·36·(DW_TAG_variable)16574 ·<5><9ffc>:·Abbrev·Number:·36·(DW_TAG_variable)
16575 ····<9ffd>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f29>16575 ····<9ffd>···DW_AT_abstract_origin:·(ref_udata)·<0xc2f27>
16576 ·<5><a000>:·Abbrev·Number:·016576 ·<5><a000>:·Abbrev·Number:·0
16577 ·<4><a001>:·Abbrev·Number:·016577 ·<4><a001>:·Abbrev·Number:·0
16578 ·<3><a002>:·Abbrev·Number:·016578 ·<3><a002>:·Abbrev·Number:·0
16579 ·<2><a003>:·Abbrev·Number:·34·(DW_TAG_lexical_block)16579 ·<2><a003>:·Abbrev·Number:·34·(DW_TAG_lexical_block)
16580 ····<a004>···DW_AT_ranges······:·(sec_offset)·0x1b6e16580 ····<a004>···DW_AT_ranges······:·(sec_offset)·0x1b6e
Max diff block lines reached; 21017233/21024430 bytes (99.97%) of diff not shown.
74.8 KB
readelf --wide --debug-dump=loc {}
    
Offset 122731, 21 lines modifiedOffset 122731, 21 lines modified
122731 ····0005f70e·v000000000000001·v000000000000003·views·at·0005f70c·for:122731 ····0005f70e·v000000000000001·v000000000000003·views·at·0005f70c·for:
122732 ·············0000000000075767·000000000007577d·(DW_OP_lit0;·DW_OP_stack_value)122732 ·············0000000000075767·000000000007577d·(DW_OP_lit0;·DW_OP_stack_value)
122733 ····0005f71b·<End·of·list>122733 ····0005f71b·<End·of·list>
  
122734 ····0005f71c·v000000000000001·v000000000000003·location·view·pair122734 ····0005f71c·v000000000000001·v000000000000003·location·view·pair
  
122735 ····0005f71e·v000000000000001·v000000000000003·views·at·0005f71c·for:122735 ····0005f71e·v000000000000001·v000000000000003·views·at·0005f71c·for:
122736 ·············0000000000075767·000000000007577d·(DW_OP_implicit_pointer:·<0x5daed>·0)122736 ·············0000000000075767·000000000007577d·(DW_OP_implicit_pointer:·<0x5daeb>·0)
122737 ····0005f72f·<End·of·list>122737 ····0005f72f·<End·of·list>
  
122738 ····0005f730·v000000000000001·v000000000000003·location·view·pair122738 ····0005f730·v000000000000001·v000000000000003·location·view·pair
  
122739 ····0005f732·v000000000000001·v000000000000003·views·at·0005f730·for:122739 ····0005f732·v000000000000001·v000000000000003·views·at·0005f730·for:
122740 ·············0000000000075767·000000000007577d·(DW_OP_implicit_pointer:·<0x5daf9>·0)122740 ·············0000000000075767·000000000007577d·(DW_OP_implicit_pointer:·<0x5daf7>·0)
122741 ····0005f743·<End·of·list>122741 ····0005f743·<End·of·list>
  
122742 ····0005f744·v000000000000001·v000000000000001·location·view·pair122742 ····0005f744·v000000000000001·v000000000000001·location·view·pair
  
122743 ····0005f746·v000000000000001·v000000000000001·views·at·0005f744·for:122743 ····0005f746·v000000000000001·v000000000000001·views·at·0005f744·for:
122744 ·············0000000000075774·000000000007577d·(DW_OP_reg3·(rbx))122744 ·············0000000000075774·000000000007577d·(DW_OP_reg3·(rbx))
122745 ····0005f752·<End·of·list>122745 ····0005f752·<End·of·list>
Offset 138403, 37 lines modifiedOffset 138403, 37 lines modified
138403 ····0006ba9c·<End·of·list>138403 ····0006ba9c·<End·of·list>
  
138404 ····0006ba9d·v000000000000000·v000000000000004·location·view·pair138404 ····0006ba9d·v000000000000000·v000000000000004·location·view·pair
138405 ····0006ba9f·v000000000000000·v000000000000000·location·view·pair138405 ····0006ba9f·v000000000000000·v000000000000000·location·view·pair
  
138406 ····0006baa1·000000000003d940·(base·address)138406 ····0006baa1·000000000003d940·(base·address)
138407 ····0006baaa·v000000000000000·v000000000000004·views·at·0006ba9d·for:138407 ····0006baaa·v000000000000000·v000000000000004·views·at·0006ba9d·for:
138408 ·············000000000003d940·000000000003d95e·(DW_OP_implicit_pointer:·<0x6c353>·0)138408 ·············000000000003d940·000000000003d95e·(DW_OP_implicit_pointer:·<0x6c351>·0)
138409 ····0006bab4·v000000000000000·v000000000000000·views·at·0006ba9f·for:138409 ····0006bab4·v000000000000000·v000000000000000·views·at·0006ba9f·for:
138410 ·············000000000003db50·000000000003db8a·(DW_OP_implicit_pointer:·<0x6c353>·0)138410 ·············000000000003db50·000000000003db8a·(DW_OP_implicit_pointer:·<0x6c351>·0)
138411 ····0006bac0·<End·of·list>138411 ····0006bac0·<End·of·list>
  
138412 ····0006bac1·v000000000000000·v000000000000004·location·view·pair138412 ····0006bac1·v000000000000000·v000000000000004·location·view·pair
138413 ····0006bac3·v000000000000000·v000000000000000·location·view·pair138413 ····0006bac3·v000000000000000·v000000000000000·location·view·pair
  
138414 ····0006bac5·000000000003d940·(base·address)138414 ····0006bac5·000000000003d940·(base·address)
138415 ····0006bace·v000000000000000·v000000000000004·views·at·0006bac1·for:138415 ····0006bace·v000000000000000·v000000000000004·views·at·0006bac1·for:
138416 ·············000000000003d940·000000000003d95e·(DW_OP_implicit_pointer:·<0x6c367>·0)138416 ·············000000000003d940·000000000003d95e·(DW_OP_implicit_pointer:·<0x6c365>·0)
138417 ····0006bad8·v000000000000000·v000000000000000·views·at·0006bac3·for:138417 ····0006bad8·v000000000000000·v000000000000000·views·at·0006bac3·for:
138418 ·············000000000003db50·000000000003db8a·(DW_OP_implicit_pointer:·<0x6c367>·0)138418 ·············000000000003db50·000000000003db8a·(DW_OP_implicit_pointer:·<0x6c365>·0)
138419 ····0006bae4·<End·of·list>138419 ····0006bae4·<End·of·list>
  
138420 ····0006bae5·v000000000000000·v000000000000004·location·view·pair138420 ····0006bae5·v000000000000000·v000000000000004·location·view·pair
138421 ····0006bae7·v000000000000000·v000000000000000·location·view·pair138421 ····0006bae7·v000000000000000·v000000000000000·location·view·pair
  
138422 ····0006bae9·000000000003d940·(base·address)138422 ····0006bae9·000000000003d940·(base·address)
138423 ····0006baf2·v000000000000000·v000000000000004·views·at·0006bae5·for:138423 ····0006baf2·v000000000000000·v000000000000004·views·at·0006bae5·for:
138424 ·············000000000003d940·000000000003d95e·(DW_OP_implicit_pointer:·<0x6c37b>·0)138424 ·············000000000003d940·000000000003d95e·(DW_OP_implicit_pointer:·<0x6c379>·0)
138425 ····0006bafc·v000000000000000·v000000000000000·views·at·0006bae7·for:138425 ····0006bafc·v000000000000000·v000000000000000·views·at·0006bae7·for:
138426 ·············000000000003db50·000000000003db8a·(DW_OP_implicit_pointer:·<0x6c37b>·0)138426 ·············000000000003db50·000000000003db8a·(DW_OP_implicit_pointer:·<0x6c379>·0)
138427 ····0006bb08·<End·of·list>138427 ····0006bb08·<End·of·list>
  
138428 ····0006bb09·v000000000000001·v000000000000000·location·view·pair138428 ····0006bb09·v000000000000001·v000000000000000·location·view·pair
138429 ····0006bb0b·v000000000000000·v000000000000000·location·view·pair138429 ····0006bb0b·v000000000000000·v000000000000000·location·view·pair
138430 ····0006bb0d·v000000000000000·v000000000000000·location·view·pair138430 ····0006bb0d·v000000000000000·v000000000000000·location·view·pair
138431 ····0006bb0f·v000000000000000·v000000000000000·location·view·pair138431 ····0006bb0f·v000000000000000·v000000000000000·location·view·pair
138432 ····0006bb11·v000000000000000·v000000000000000·location·view·pair138432 ····0006bb11·v000000000000000·v000000000000000·location·view·pair
Offset 165717, 37 lines modifiedOffset 165717, 37 lines modified
165717 ····00080a10·<End·of·list>165717 ····00080a10·<End·of·list>
  
165718 ····00080a11·v000000000000000·v000000000000000·location·view·pair165718 ····00080a11·v000000000000000·v000000000000000·location·view·pair
165719 ····00080a13·v000000000000000·v000000000000000·location·view·pair165719 ····00080a13·v000000000000000·v000000000000000·location·view·pair
  
165720 ····00080a15·000000000003c90b·(base·address)165720 ····00080a15·000000000003c90b·(base·address)
165721 ····00080a1e·v000000000000000·v000000000000000·views·at·00080a11·for:165721 ····00080a1e·v000000000000000·v000000000000000·views·at·00080a11·for:
165722 ·············000000000003c90b·000000000003c934·(DW_OP_implicit_pointer:·<0x7d78f>·0)165722 ·············000000000003c90b·000000000003c934·(DW_OP_implicit_pointer:·<0x7d78d>·0)
165723 ····00080a28·v000000000000000·v000000000000000·views·at·00080a13·for:165723 ····00080a28·v000000000000000·v000000000000000·views·at·00080a13·for:
165724 ·············000000000003ca93·000000000003cac3·(DW_OP_implicit_pointer:·<0x7d78f>·0)165724 ·············000000000003ca93·000000000003cac3·(DW_OP_implicit_pointer:·<0x7d78d>·0)
165725 ····00080a34·<End·of·list>165725 ····00080a34·<End·of·list>
  
165726 ····00080a35·v000000000000000·v000000000000000·location·view·pair165726 ····00080a35·v000000000000000·v000000000000000·location·view·pair
165727 ····00080a37·v000000000000000·v000000000000000·location·view·pair165727 ····00080a37·v000000000000000·v000000000000000·location·view·pair
  
165728 ····00080a39·000000000003c90b·(base·address)165728 ····00080a39·000000000003c90b·(base·address)
165729 ····00080a42·v000000000000000·v000000000000000·views·at·00080a35·for:165729 ····00080a42·v000000000000000·v000000000000000·views·at·00080a35·for:
165730 ·············000000000003c90b·000000000003c934·(DW_OP_implicit_pointer:·<0x7d79b>·0)165730 ·············000000000003c90b·000000000003c934·(DW_OP_implicit_pointer:·<0x7d799>·0)
165731 ····00080a4c·v000000000000000·v000000000000000·views·at·00080a37·for:165731 ····00080a4c·v000000000000000·v000000000000000·views·at·00080a37·for:
165732 ·············000000000003ca93·000000000003cac3·(DW_OP_implicit_pointer:·<0x7d79b>·0)165732 ·············000000000003ca93·000000000003cac3·(DW_OP_implicit_pointer:·<0x7d799>·0)
165733 ····00080a58·<End·of·list>165733 ····00080a58·<End·of·list>
  
165734 ····00080a59·v000000000000000·v000000000000000·location·view·pair165734 ····00080a59·v000000000000000·v000000000000000·location·view·pair
165735 ····00080a5b·v000000000000000·v000000000000000·location·view·pair165735 ····00080a5b·v000000000000000·v000000000000000·location·view·pair
  
165736 ····00080a5d·000000000003c90b·(base·address)165736 ····00080a5d·000000000003c90b·(base·address)
165737 ····00080a66·v000000000000000·v000000000000000·views·at·00080a59·for:165737 ····00080a66·v000000000000000·v000000000000000·views·at·00080a59·for:
165738 ·············000000000003c90b·000000000003c934·(DW_OP_implicit_pointer:·<0x7d7a7>·0)165738 ·············000000000003c90b·000000000003c934·(DW_OP_implicit_pointer:·<0x7d7a5>·0)
165739 ····00080a70·v000000000000000·v000000000000000·views·at·00080a5b·for:165739 ····00080a70·v000000000000000·v000000000000000·views·at·00080a5b·for:
165740 ·············000000000003ca93·000000000003cac3·(DW_OP_implicit_pointer:·<0x7d7a7>·0)165740 ·············000000000003ca93·000000000003cac3·(DW_OP_implicit_pointer:·<0x7d7a5>·0)
165741 ····00080a7c·<End·of·list>165741 ····00080a7c·<End·of·list>
  
165742 ····00080a7d·v000000000000000·v000000000000005·location·view·pair165742 ····00080a7d·v000000000000000·v000000000000005·location·view·pair
165743 ····00080a7f·v000000000000005·v000000000000000·location·view·pair165743 ····00080a7f·v000000000000005·v000000000000000·location·view·pair
165744 ····00080a81·v000000000000000·v000000000000000·location·view·pair165744 ····00080a81·v000000000000000·v000000000000000·location·view·pair
  
165745 ····00080a83·000000000003ca93·(base·address)165745 ····00080a83·000000000003ca93·(base·address)
Offset 184808, 45 lines modifiedOffset 184808, 45 lines modified
  
184808 ····0008f994·v000000000000004·v000000000000002·location·view·pair184808 ····0008f994·v000000000000004·v000000000000002·location·view·pair
184809 ····0008f996·v000000000000000·v000000000000000·location·view·pair184809 ····0008f996·v000000000000000·v000000000000000·location·view·pair
184810 ····0008f998·v000000000000000·v000000000000000·location·view·pair184810 ····0008f998·v000000000000000·v000000000000000·location·view·pair
  
184811 ····0008f99a·000000000006b8a1·(base·address)184811 ····0008f99a·000000000006b8a1·(base·address)
184812 ····0008f9a3·v000000000000004·v000000000000002·views·at·0008f994·for:184812 ····0008f9a3·v000000000000004·v000000000000002·views·at·0008f994·for:
184813 ·············000000000006b8a1·000000000006b8e7·(DW_OP_implicit_pointer:·<0x87498>·0)184813 ·············000000000006b8a1·000000000006b8e7·(DW_OP_implicit_pointer:·<0x87496>·0)
184814 ····0008f9ad·v000000000000000·v000000000000000·views·at·0008f996·for:184814 ····0008f9ad·v000000000000000·v000000000000000·views·at·0008f996·for:
184815 ·············000000000006bd04·000000000006bd20·(DW_OP_implicit_pointer:·<0x87498>·0)184815 ·············000000000006bd04·000000000006bd20·(DW_OP_implicit_pointer:·<0x87496>·0)
184816 ····0008f9b9·v000000000000000·v000000000000000·views·at·0008f998·for:184816 ····0008f9b9·v000000000000000·v000000000000000·views·at·0008f998·for:
184817 ·············0000000000022393·0000000000022398·(DW_OP_implicit_pointer:·<0x87498>·0)184817 ·············0000000000022393·0000000000022398·(DW_OP_implicit_pointer:·<0x87496>·0)
184818 ····0008f9ca·<End·of·list>184818 ····0008f9ca·<End·of·list>
  
184819 ····0008f9cb·v000000000000004·v000000000000002·location·view·pair184819 ····0008f9cb·v000000000000004·v000000000000002·location·view·pair
184820 ····0008f9cd·v000000000000000·v000000000000000·location·view·pair184820 ····0008f9cd·v000000000000000·v000000000000000·location·view·pair
184821 ····0008f9cf·v000000000000000·v000000000000000·location·view·pair184821 ····0008f9cf·v000000000000000·v000000000000000·location·view·pair
  
184822 ····0008f9d1·000000000006b8a1·(base·address)184822 ····0008f9d1·000000000006b8a1·(base·address)
184823 ····0008f9da·v000000000000004·v000000000000002·views·at·0008f9cb·for:184823 ····0008f9da·v000000000000004·v000000000000002·views·at·0008f9cb·for:
184824 ·············000000000006b8a1·000000000006b8e7·(DW_OP_implicit_pointer:·<0x874ac>·0)184824 ·············000000000006b8a1·000000000006b8e7·(DW_OP_implicit_pointer:·<0x874aa>·0)
184825 ····0008f9e4·v000000000000000·v000000000000000·views·at·0008f9cd·for:184825 ····0008f9e4·v000000000000000·v000000000000000·views·at·0008f9cd·for:
184826 ·············000000000006bd04·000000000006bd20·(DW_OP_implicit_pointer:·<0x874ac>·0)184826 ·············000000000006bd04·000000000006bd20·(DW_OP_implicit_pointer:·<0x874aa>·0)
184827 ····0008f9f0·v000000000000000·v000000000000000·views·at·0008f9cf·for:184827 ····0008f9f0·v000000000000000·v000000000000000·views·at·0008f9cf·for:
184828 ·············0000000000022393·0000000000022398·(DW_OP_implicit_pointer:·<0x874ac>·0)184828 ·············0000000000022393·0000000000022398·(DW_OP_implicit_pointer:·<0x874aa>·0)
184829 ····0008fa01·<End·of·list>184829 ····0008fa01·<End·of·list>
  
184830 ····0008fa02·v000000000000004·v000000000000002·location·view·pair184830 ····0008fa02·v000000000000004·v000000000000002·location·view·pair
184831 ····0008fa04·v000000000000000·v000000000000000·location·view·pair184831 ····0008fa04·v000000000000000·v000000000000000·location·view·pair
Max diff block lines reached; 68314/76577 bytes (89.21%) of diff not shown.
3.53 KB
strings --all --bytes=8 {}
    
Offset 1, 105 lines modifiedOffset 1, 91 lines modified
1 AMGCC:·(Debian·14.2.0-19)·14.2.01 GCC:·(Debian·14.2.0-19)·14.2.0
2 uvfW1BSRC2 uvfW1BSRC
3 rffgggwgg 
4 S0=&FRLE 
5 n]3ZeLG= 
6 _+UrVo{+ 
7 )2/PMAwyu 
8 ^BIH#»  %HK 
9 x\h7Li7L 
10 jlSj\qW#»        
11 )-^SZ$J-> 
12 /7T#-MIKS 
13 kZrIYrIYbq 
14 |wK.L'Kj 
15 }z+w@o~+W 
16 $4}:Hhj7H3 ec6Ub#G>Z
 4 n=#32N)N
 5 [$&{f`%u
 6 D{dD)K{d
 7 .&aME1» l
 8 +AYHTzCVSY
 9 *}&k}6H}
 10 jtkCw_y([u
 11 ?wgLiz/W
 12 'khsqXMPG|
 13 kyKC·>G.u
 14 RF||:x?e
 15 jlWj\uWc
 16 4WF)#,&%
 17 JcOe{L?.:
 18 Jn?%6F0·
 19 <WJcv8s=
 20 !3+l3i9!
17 V,u)Wg@'r21 V,u)Wg@'s
 22 #$?G4gs!l
 23 JXm}MU6;
 24 D:f*PN^G;f
 25 =K])H:*f
 26 r·Wf5-(P4
18 9vXWAa9$ 
19 RXKX)<fSF 
20 ,dPUcum" 
21 W^w'#L·| 
22 Y_Qz+Hmac 
23 'S$yCFOq 
24 ·rD*tZ)t 
25 oY)zB9cF27 gY)zBqcF
 28 Ts,2[yL6
 29 Z)HV@AeBP
 30 uI3^M2xv
 31 K[h-QH1)1
 32 ·_m^DA_%
 33 LP|3EAx~
 34 ].!H.!#$
 35 \F0TlTWX
 36 x]@VGHf,
 37 pQ8TWlE}
 38 ;T5B0`>z
 39 [=z6GPNm
 40 d$Sy6C0o
26 9m9<C!Y/ 
27 ej;V8-yc| 
28 fNim,QGX 
29 Z4+!{xhYr< 
30 `hekez)M 
31 QebJ%^e7U 
32 q»      b?-V\[ 
33 j%d8QvSx 
34 e=lT4Hf,`{^u 
35 /I1-'$q-/ 
36 3*{8L;rL 
37 QHf,`CA&\ 
38 v6}7sQ8TWlE} 
39 u$`D@0`> 
40 C`1E)/fy9 
41 JH3X-MW(41 ZH3X-MW(
 42 }"S`F><<+
 43 Q]R>.DuI
 44 8~<_TqYR
 45 ])*k3y=+
 46 LJb-|o4o
 47 eBE*!;%t3
 48 je^RSeKw
 49 E»      UxqBau
 50 xn3cshT<gsX
 51 »       P6L·{1>
 52 `VQ<Y+·2
 53 qmGEFbUp
 54 _!}<8C~9
 55 N;fI{"t+2
 56 uL}&pFRP2i
 57 tG/lV·MUB
42 U]S>>TuM 
43 ~J{2`N,C 
44 fkv5U~y»J 
45 `7pM,Ts_ 
46 OC_NhN]B 
47 jp\fOJ6Cnb 
48 SJ6`sszQ 
49 !-G\jyQ1 
50 Gl;%C»  3i[ 
51 @{yQU5!T-/ 
52 KD&wN»  1/~ 
53 b[2_L;OaQ 
54 $={R.zc? 
55 I·xRoh»  Y 
56 Gm!t?Dzt 
57 yh;UVBN}W 
58 qw447d}0w$ 
59 c,tWLevW58 c,rWLUvW
 59 7+E^s1Jh»       i&[
 60 !e##,J:D
 61 ])dw;:?N
 62 c·lPG``a
 63 WP&|wO-g
 64 (u3<7"=?J=
 65 hjXI|=DD
 66 U1\ym__d
 67 ·>&~ZY6o`
 68 ^TMC:@[g
 69 Eg;Rl3,5
 70 =A:e)V':H
 71 7R=A#{!;
 72 '/1iF>p')
 73 iu?~$1Tzl
60 umM(c}^9 
61 !!l!:h·; 
Max diff block lines reached; 1578/3558 bytes (44.35%) of diff not shown.