{"id":204607,"date":"2025-05-29T11:47:47","date_gmt":"2025-05-29T03:47:47","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204607\/"},"modified":"2025-05-29T11:47:47","modified_gmt":"2025-05-29T03:47:47","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-pandas-%e5%90%88%e5%b9%b6%e5%a4%9a%e4%b8%aa%e5%ba%97%e9%93%ba%e7%9a%84%e4%b8%9a%e5%8a%a1%e5%91%98%e4%b8%9a%e7%bb%a9%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204607\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 Pandas \u5408\u5e76\u591a\u4e2a\u5e97\u94fa\u7684\u4e1a\u52a1\u5458\u4e1a\u7ee9\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u4f7f\u7528 Pandas \u5408\u5e76\u591a\u4e2a\u5e97\u94fa\u7684\u4e1a\u52a1\u5458\u4e1a\u7ee9\uff1f<\/h1>\n<p>\u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\u4e86\uff0c\u5176\u4e2d\u6d89\u53ca\u5230\u7684\u77e5\u8bc6\u70b9\u5305\u62ec<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\uff0c\u65e0\u8bba\u4f60\u662f\u5c0f\u767d\u8fd8\u662f\u8001\u624b\uff0c\u90fd\u9002\u5408\u770b\u4e00\u770b\u54e6~\u6709\u597d\u7684\u5efa\u8bae\u4e5f\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u82e5\u662f\u770b\u5b8c\u6709\u6240\u6536\u83b7\uff0c\u4e5f\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u70b9\u8d5e\u652f\u6301\u5440\uff01\u4e00\u8d77\u52a0\u6cb9\u5b66\u4e60~<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241111\/17313156656731c7d1d4e0b.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u540c\u4e2a\u4e1a\u52a1\u5458\u591a\u5e97\u94fa\u4e1a\u7ee9\u7edf\u8ba1\uff1a\u7528 pandas \u5408\u5e76\u59d3\u540d\u5217<\/strong><\/p>\n<p><strong>\u95ee\u9898\uff1a<\/strong>\u9700\u8981\u7edf\u8ba1\u540c\u4e2a\u4e1a\u52a1\u5458\u5728\u4e0d\u540c\u5e97\u94fa\u7684\u4e1a\u7ee9\uff0c\u8868\u683c\u5982\u4e0b\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u4e1a\u52a1\u5458<\/th>\n<th>\u5e97\u94fa<\/th>\n<th>\u9500\u552e\u989d<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5f20\u4e09<\/td>\n<td>\u5e97\u94fa 1<\/td>\n<td>100<\/td>\n<\/tr>\n<tr>\n<td>\u5f20\u4e09<\/td>\n<td>\u5e97\u94fa 2<\/td>\n<td>200<\/td>\n<\/tr>\n<tr>\n<td>\u674e\u56db<\/td>\n<td>\u5e97\u94fa 3<\/td>\n<td>300<\/td>\n<\/tr>\n<tr>\n<td>\u674e\u56db<\/td>\n<td>\u5e97\u94fa 4<\/td>\n<td>400<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u76ee\u6807\u662f\u5c06\u540c\u4e2a\u4e1a\u52a1\u5458\u7684\u9500\u552e\u989d\u5408\u5e76\u5230\u540c\u4e00\u5217\u4e2d\uff0c\u5f97\u5230\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u4e1a\u52a1\u5458<\/th>\n<th>\u603b\u9500\u552e\u989d<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5f20\u4e09<\/td>\n<td>300<\/td>\n<\/tr>\n<tr>\n<td>\u674e\u56db<\/td>\n<td>700<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u7b54\u6848\uff1a<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 pandas \u7684 groupby \u51fd\u6570\u6765\u5b9e\u73b0\u8fd9\u4e00\u76ee\u7684\u3002\u4ee5\u4e0b\u662f\u4ee3\u7801\uff1a<\/p>\n<pre>import pandas as pd\n\ndf = pd.dataframe({\n    \"\u4e1a\u52a1\u5458\": [\"\u5f20\u4e09\", \"\u5f20\u4e09\", \"\u674e\u56db\", \"\u674e\u56db\"],\n    \"\u5e97\u94fa\": [\"\u5e97\u94fa 1\", \"\u5e97\u94fa 2\", \"\u5e97\u94fa 3\", \"\u5e97\u94fa 4\"],\n    \"\u9500\u552e\u989d\": [100, 200, 300, 400]\n})\n\n# \u5bf9\u4e1a\u52a1\u5458\u8fdb\u884c\u5206\u7ec4\uff0c\u518d\u5bf9\u9500\u552e\u989d\u6c42\u548c\nresult = df.groupby(\"\u4e1a\u52a1\u5458\")[\"\u9500\u552e\u989d\"].sum()\n\n# \u8f93\u51fa\u7ed3\u679c\nprint(result)<\/pre>\n<p>\u8fd0\u884c\u4ee3\u7801\u5c06\u8f93\u51fa\uff1a<\/p>\n<pre>\u4e1a\u52a1\u5458\n\u5f20\u4e09    300\n\u674e\u56db    700\nName: \u9500\u552e\u989d, dtype: int64<\/pre>\n<p>\u8fd9\u6837\u5c31\u5b9e\u73b0\u4e86\u5c06\u540c\u4e2a\u4e1a\u52a1\u5458\u7684\u9500\u552e\u989d\u5408\u5e76\u5230\u540c\u4e00\u5217\u4e2d\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u300a\u5982\u4f55\u4f7f\u7528 Pandas \u5408\u5e76\u591a\u4e2a\u5e97\u94fa\u7684\u4e1a\u52a1\u5458\u4e1a\u7ee9\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528 Pandas \u5408\u5e76\u591a\u4e2a&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-204607","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204607","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=204607"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204607\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204607"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204607"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}