{"id":1368,"date":"2023-07-26T16:40:45","date_gmt":"2023-07-26T16:40:45","guid":{"rendered":"https:\/\/statorials.org\/cn\/pandas-%e5%b8%a6%e6%9d%a1%e4%bb%b6%e7%9a%84%e6%80%bb%e5%92%8c%e5%88%97\/"},"modified":"2023-07-26T16:40:45","modified_gmt":"2023-07-26T16:40:45","slug":"pandas-%e5%b8%a6%e6%9d%a1%e4%bb%b6%e7%9a%84%e6%80%bb%e5%92%8c%e5%88%97","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/pandas-%e5%b8%a6%e6%9d%a1%e4%bb%b6%e7%9a%84%e6%80%bb%e5%92%8c%e5%88%97\/","title":{"rendered":"Pandas\uff1a\u5982\u4f55\u6839\u636e\u6761\u4ef6\u6dfb\u52a0\u5217"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u6839\u636e\u6761\u4ef6\u5bf9 pandas DataFrame \u4e2d\u7684\u5217\u7684\u503c\u6c42\u548c\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">loc<\/span> [df[' <span style=\"color: #008000;\">col1<\/span> '] == <span style=\"color: #008000;\">some_value<\/span> , ' <span style=\"color: #008000;\">col2<\/span> ']. <span style=\"color: #3366ff;\">sum<\/span> ()\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u672c\u6559\u7a0b\u63d0\u4f9b\u4e86\u4f7f\u7528\u4ee5\u4e0b pandas DataFrame \u5b9e\u9645\u4f7f\u7528\u6b64\u8bed\u6cd5\u7684\u51e0\u4e2a\u793a\u4f8b\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #107d3f;\">import<\/span> pandas <span style=\"color: #107d3f;\">as<\/span> pd\n\n<span style=\"color: #008080;\">#createDataFrame<\/span>\ndf = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #008000;\">team<\/span> ': ['A', 'A', 'A', 'B', 'B', 'C'],\n                   ' <span style=\"color: #008000;\">conference<\/span> ': ['East', 'East', 'East', 'West', 'West', 'East'],\n                   ' <span style=\"color: #008000;\">points<\/span> ': [11, 8, 10, 6, 6, 5],\n                   ' <span style=\"color: #008000;\">rebounds<\/span> ': [7, 7, 6, 9, 12, 8]})\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\n        team conference points rebounds\n0 A East 11 7\n1 A East 8 7\n2 A East 10 6\n3 B West 6 9\n4 B West 6 12\n5 C East 5 8<\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u793a\u4f8b 1\uff1a\u6839\u636e\u6761\u4ef6\u6dfb\u52a0\u5217<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u5982\u4f55\u67e5\u627e team \u7b49\u4e8e\u201cA\u201d\u7684\u884c\u7684\u5206\u6570\u603b\u548c\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">loc<\/span> [df[' <span style=\"color: #008000;\">team<\/span> '] == ' <span style=\"color: #008000;\">A<\/span> ', ' <span style=\"color: #008000;\">points<\/span> ']. <span style=\"color: #3366ff;\">sum<\/span> ()\n\n29<\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u793a\u4f8b2\uff1a\u6839\u636e\u591a\u4e2a\u6761\u4ef6\u6dfb\u52a0\u5217<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u5982\u4f55\u67e5\u627e\u56e2\u961f\u7b49\u4e8e\u201cA\u201d<em>\u4e14<\/em>\u4f1a\u8bae\u7b49\u4e8e\u201cEast\u201d\u7684\u7ebf\u7684\u5206\u6570\u603b\u548c\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">loc<\/span> [(df[' <span style=\"color: #008000;\">team<\/span> '] == ' <span style=\"color: #008000;\">A<\/span> ') &amp; (df[' <span style=\"color: #008000;\">conference<\/span> '] == ' <span style=\"color: #008000;\">East<\/span> '), ' <span style=\"color: #008000;\">points<\/span> ']. <span style=\"color: #3366ff;\">sum<\/span> ()\n\n29<\/strong><\/pre>\n<h3><strong>\u793a\u4f8b 3\uff1a\u6839\u636e\u591a\u4e2a\u6761\u4ef6\u4e4b\u4e00\u6dfb\u52a0\u5217<\/strong><\/h3>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u5982\u4f55\u67e5\u627e\u961f\u4f0d\u7b49\u4e8e\u201cA\u201d<i>\u6216<\/i>\u201cB\u201d\u7684\u884c\u7684\u5206\u6570\u603b\u548c\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">loc<\/span> [df[' <span style=\"color: #008000;\">team<\/span> ']. <span style=\"color: #3366ff;\">isin<\/span> ([' <span style=\"color: #008000;\">A<\/span> ',' <span style=\"color: #008000;\">B<\/span> ']), ' <span style=\"color: #008000;\">dots<\/span> ']. <span style=\"color: #3366ff;\">sum<\/span> ()\n\n41<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u60a8\u53ef\u4ee5\u5728<a href=\"https:\/\/statorials.org\/cn\/\u7edf\u8ba1\u5b66\u4ee5\u7b80\u5355\u76f4\u63a5\u7684\u65b9\u5f0f\u89e3\u91ca\u6982\u5ff5\uff0c\u6211\u4eec\u4f7f\u5b66\u4e60\u7edf\u8ba1\u53d8\u5f97\u66f4\u5bb9\u6613\/\" target=\"_blank\" rel=\"noopener\">\u6b64\u9875\u9762<\/a>\u4e0a\u627e\u5230\u66f4\u591a\u718a\u732b\u6559\u7a0b\u3002<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u6839\u636e\u6761\u4ef6\u5bf9 pandas DataFrame \u4e2d\u7684\u5217\u7684\u503c\u6c42\u548c\uff1a df. loc [df[&#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-1368","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>Pandas\uff1a\u5982\u4f55\u6839\u636e\u6761\u4ef6\u6dfb\u52a0\u5217 - Statorials<\/title>\n<meta name=\"description\" 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