{"id":204206,"date":"2025-05-29T09:52:30","date_gmt":"2025-05-29T01:52:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204206\/"},"modified":"2025-05-29T09:52:30","modified_gmt":"2025-05-29T01:52:30","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-pandas-%e5%90%88%e5%b9%b6%e4%b8%8d%e5%90%8c%e5%ba%97%e9%93%ba%e5%90%8c%e5%a7%93%e9%94%80%e5%94%ae%e4%ba%ba%e5%91%98%e7%9a%84%e4%b8%9a%e7%bb%a9%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204206\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 Pandas \u5408\u5e76\u4e0d\u540c\u5e97\u94fa\u540c\u59d3\u9500\u552e\u4eba\u5458\u7684\u4e1a\u7ee9\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u4f7f\u7528 Pandas \u5408\u5e76\u4e0d\u540c\u5e97\u94fa\u540c\u59d3\u9500\u552e\u4eba\u5458\u7684\u4e1a\u7ee9\uff1f<\/h1>\n<p>IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300a\u5982\u4f55\u4f7f\u7528 Pandas \u5408\u5e76\u4e0d\u540c\u5e97\u94fa\u540c\u59d3\u9500\u552e\u4eba\u5458\u7684\u4e1a\u7ee9\uff1f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241101\/173041959967241b8fcf3a4.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u4e0d\u540c\u5e97\u94fa\u540c\u59d3\u9500\u552e\u4eba\u5458\u4e1a\u7ee9\u5408\u5e76<\/strong><\/p>\n<p>\u5728\u4f7f\u7528 pandas \u8fdb\u884c\u6570\u636e\u5904\u7406\u65f6\uff0c\u6709\u65f6\u9700\u8981\u5c06\u4e0d\u540c\u5e97\u94fa\u4e2d\u540c\u59d3\u9500\u552e\u4eba\u5458\u7684\u4e1a\u7ee9\u5408\u5e76\u8ba1\u7b97\u3002\u4f8b\u5982\uff0c\u4e0b\u8868\u4e2d\uff0c\u9700\u8981\u5c06\u540c\u59d3\u9500\u552e\u4eba\u5458\u7684\u4e1a\u7ee9\u5408\u5e76\u4e3a\u540c\u4e00\u5217\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5e97\u94fa<\/th>\n<th>\u9500\u552e\u5458<\/th>\n<th>\u4e1a\u7ee9<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>a<\/td>\n<td>\u5f20\u4e09<\/td>\n<td>100<\/td>\n<\/tr>\n<tr>\n<td>b<\/td>\n<td>\u5f20\u4e09<\/td>\n<td>200<\/td>\n<\/tr>\n<tr>\n<td>a<\/td>\n<td>\u674e\u56db<\/td>\n<td>300<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e3a\u4e86\u5408\u5e76\u8fd9\u4e9b\u4e1a\u7ee9\uff0c\u53ef\u4ee5\u4f7f\u7528 pandas \u7684 groupby() \u548c sum() \u51fd\u6570\uff1a<\/p>\n<pre>import pandas as pd\n\n# \u8bfb\u53d6\u6570\u636e\ndf = pd.read_csv('data.csv')\n\n# \u6309\u9500\u552e\u5458\u59d3\u540d\u5206\u7ec4\u5e76\u6c42\u548c\ndf_sum = df.groupby('\u9500\u552e\u5458')['\u4e1a\u7ee9'].sum()\n\n# \u67e5\u770b\u7ed3\u679c\nprint(df_sum)<\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre>\u9500\u552e\u5458\n\u674e\u56db    300\n\u5f20\u4e09    300<\/pre>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u5982\u4f55\u4f7f\u7528 Pandas \u5408\u5e76\u4e0d\u540c\u5e97\u94fa\u540c\u59d3\u9500\u552e\u4eba\u5458\u7684\u4e1a\u7ee9\uff1f\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528 Pandas \u5408\u5e76\u4e0d\u540c&#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-204206","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204206","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=204206"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204206\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204206"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204206"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204206"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}