{"id":1783,"date":"2023-07-25T00:31:39","date_gmt":"2023-07-25T00:31:39","guid":{"rendered":"https:\/\/statorials.org\/cn\/pandas-%e6%94%b9%e5%8f%98%e5%88%97%e7%9a%84%e9%a1%ba%e5%ba%8f\/"},"modified":"2023-07-25T00:31:39","modified_gmt":"2023-07-25T00:31:39","slug":"pandas-%e6%94%b9%e5%8f%98%e5%88%97%e7%9a%84%e9%a1%ba%e5%ba%8f","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/pandas-%e6%94%b9%e5%8f%98%e5%88%97%e7%9a%84%e9%a1%ba%e5%ba%8f\/","title":{"rendered":"\u5982\u4f55\u66f4\u6539 pandas dataframe \u4e2d\u7684\u5217\u987a\u5e8f"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u5feb\u901f\u66f4\u6539 pandas DataFrame \u4e2d\u7684\u5217\u987a\u5e8f\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df[[' <span style=\"color: #ff0000;\">column2<\/span> ', ' <span style=\"color: #ff0000;\">column3<\/span> ', ' <span style=\"color: #ff0000;\">column1<\/span> ']]\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u5c06\u6b64\u8bed\u6cd5\u4e0e\u4ee5\u4e0b pandas DataFrame \u7ed3\u5408\u4f7f\u7528\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd<\/span>\n\n#create new DataFrame<\/span>\ndf = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">points<\/span> ': [25, 12, 15, 14, 19, 23, 25, 29],\n                   ' <span style=\"color: #ff0000;\">assists<\/span> ': [5, 7, 7, 9, 12, 9, 9, 4],\n                   ' <span style=\"color: #ff0000;\">rebounds<\/span> ': [11, 8, 10, 6, 6, 5, 9, 12]})\n\n<span style=\"color: #008080;\">#display DataFrame\n<\/span>df\n\n\tpoints assists rebounds\n0 25 5 11\n1 12 7 8\n2 15 7 10\n3 14 9 6\n4 19 12 6\n5 23 9 5\n6 25 9 9\n7 29 4 12\n<\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u793a\u4f8b 1\uff1a\u6309\u540d\u79f0\u66f4\u6539\u5217\u7684\u987a\u5e8f<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u4e86\u5982\u4f55\u6839\u636e\u540d\u79f0\u66f4\u6539 DataFrame \u4e2d\u5217\u7684\u987a\u5e8f\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#change order of columns by name\n<span style=\"color: #000000;\">df[[' <span style=\"color: #ff0000;\">rebounds<\/span> ', ' <span style=\"color: #ff0000;\">assists<\/span> ', ' <span style=\"color: #ff0000;\">points<\/span> ']]\n\n\trebound assists points\n0 11 5 25\n1 8 7 12\n2 10 7 15\n3 6 9 14\n4 6 12 19\n5 5 9 23\n6 9 9 25\n7 12 4 29<\/span><\/span><\/strong>\n<\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u793a\u4f8b 2\uff1a\u901a\u8fc7\u6dfb\u52a0\u65b0\u7684\u7b2c\u4e00\u5217\u6765\u66f4\u6539\u987a\u5e8f<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u6f14\u793a\u4e86\u5982\u4f55\u901a\u8fc7\u5728\u7b2c\u4e00\u4e2a\u4f4d\u7f6e\u63d2\u5165\u65b0\u5217\u6765\u66f4\u6539 DataFrame \u4e2d\u5217\u7684\u987a\u5e8f\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define new column to add\n<span style=\"color: #000000;\">steals = [2, 3, 3, 4, 3, 2, 1, 2]\n\n<span style=\"color: #008080;\">#insert new column in first position<\/span>\ndf. <span style=\"color: #3366ff;\">insert<\/span> (0, ' <span style=\"color: #ff0000;\">steals<\/span> ', steals)\n\n<span style=\"color: #008080;\">#display dataFrame\n<\/span>df\n        steals points assists rebounds\n0 2 25 5 11\n1 3 12 7 8\n2 3 15 7 10\n3 4 14 9 6\n4 3 19 12 6\n5 2 23 9 5\n6 1 25 9 9\n7 2 29 4 12<\/span><\/span><\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u793a\u4f8b 3\uff1a\u901a\u8fc7\u6dfb\u52a0\u65b0\u7684\u6700\u540e\u4e00\u5217\u6765\u66f4\u6539\u987a\u5e8f<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u6f14\u793a\u4e86\u5982\u4f55\u901a\u8fc7\u5728 DataFrame \u7684\u6700\u540e\u4f4d\u7f6e\u63d2\u5165\u65b0\u5217\u6765\u66f4\u6539 DataFrame \u4e2d\u5217\u7684\u987a\u5e8f\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define new column to add\n<span style=\"color: #000000;\">steals = [2, 3, 3, 4, 3, 2, 1, 2]\n\n<span style=\"color: #008080;\">#insert new column in last position\n<\/span>df. <span style=\"color: #3366ff;\">insert<\/span> ( <span style=\"color: #008000;\">len<\/span> ( <span style=\"color: #3366ff;\">df.columns<\/span> ), ' <span style=\"color: #ff0000;\">steals<\/span> ', steals)\n\n<span style=\"color: #008080;\">#display dataFrame<\/span>\ndf\n\n\tpoints assists rebounds steals\n0 25 5 11 2\n1 12 7 8 3\n2 15 7 10 3\n3 14 9 6 4\n4 19 12 6 3\n5 23 9 5 2\n6 25 9 9 1\n7 29 4 12 2\n<\/span><\/span><\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u5176\u4ed6\u8d44\u6e90<\/strong><\/span><\/h3>\n<p><a href=\"https:\/\/statorials.org\/cn\/\u63d2\u5165-pandas-\u6570\u636e\u6846\u5217\/\" target=\"_blank\" rel=\"noopener\">\u5982\u4f55\u5c06\u5217\u63d2\u5165 Pandas DataFrame<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/\u5220\u9664\u7d22\u5f15\u718a\u732b\/\" target=\"_blank\" rel=\"noopener\">\u5982\u4f55\u5220\u9664 Pandas \u4e2d\u7684\u7d22\u5f15\u5217<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/pandas-\u5408\u5e76\u4e24\u5217\/\">\u5982\u4f55\u5728 Pandas \u4e2d\u5408\u5e76\u4e24\u5217<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u5feb\u901f\u66f4\u6539 pandas DataFrame \u4e2d\u7684\u5217\u987a\u5e8f\uff1a df[[&#8216; column2 &#8216;,  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-1783","post","type-post","status-publish","format-standard","hentry","category-11"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5982\u4f55\u66f4\u6539 Pandas DataFrame \u4e2d\u7684\u5217\u987a\u5e8f<\/title>\n<meta name=\"description\" content=\"\u672c\u6559\u7a0b\u901a\u8fc7\u793a\u4f8b\u8bf4\u660e\u5982\u4f55\u5feb\u901f\u66f4\u6539 pandas DataFrame \u4e2d\u7684\u5217\u987a\u5e8f\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/cn\/pandas-\u6539\u53d8\u5217\u7684\u987a\u5e8f\/\" \/>\n<meta property=\"og:locale\" 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