{"id":204490,"date":"2025-05-29T08:52:49","date_gmt":"2025-05-29T00:52:49","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204490\/"},"modified":"2025-05-29T08:52:49","modified_gmt":"2025-05-29T00:52:49","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-pandas-%e4%b8%ad%e4%b8%ba-dataframe-%e7%89%b9%e5%ae%9a%e5%88%97%e7%9a%84%e5%80%bc%e6%b7%bb%e5%8a%a0%e5%89%8d%e7%bc%80%e5%92%8c%e5%90%8e%e7%bc%80%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204490\/","title":{"rendered":"\u5982\u4f55\u5728 Pandas \u4e2d\u4e3a DataFrame \u7279\u5b9a\u5217\u7684\u503c\u6dfb\u52a0\u524d\u7f00\u548c\u540e\u7f00\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u5728 Pandas \u4e2d\u4e3a DataFrame \u7279\u5b9a\u5217\u7684\u503c\u6dfb\u52a0\u524d\u7f00\u548c\u540e\u7f00\uff1f<\/h1>\n<p>\u4f60\u5728\u5b66\u4e60\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5982\u4f55\u5728 Pandas \u4e2d\u4e3a DataFrame \u7279\u5b9a\u5217\u7684\u503c\u6dfb\u52a0\u524d\u7f00\u548c\u540e\u7f00\uff1f\u300b<\/span>\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241108\/1731071920672e0fb0e2e99.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u4fee\u6539 dataframe \u4e2d\u7279\u5b9a\u5217\u7684\u503c<\/strong><\/p>\n<p>\u5728 pandas \u4e2d\uff0c\u4fee\u6539 dataframe \u4e2d\u7279\u5b9a\u5217\u7684\u503c\u662f\u5f88\u5e38\u89c1\u7684\u64cd\u4f5c\u3002\u672c\u4f8b\u4e2d\uff0c\u6211\u4eec\u6709\u4e00\u4e2a dataframe\uff0c\u5176\u4e2d\u4e00\u5217\u540d\u4e3a &#8220;b&#8221;\uff0c\u5305\u542b\u4e00\u7cfb\u5217\u5b57\u7b26\u4e32\u3002\u6211\u4eec\u5e0c\u671b\u5728\u6bcf\u4e2a\u5b57\u7b26\u4e32\u524d\u540e\u90fd\u52a0\u4e0a &#8220;!a!&#8221;\u3002<\/p>\n<p>\u8981\u5b9e\u73b0\u6b64\u76ee\u7684\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<pre>import pandas as pd\n\n# \u521b\u5efa\u793a\u4f8b dataframe\ndf = pd.dataframe({'a': ['cm1', 'cm2', 'cm3'],\n                   'b': ['b1-name xxxx', 'name yyyy', 'b3-name name zzzz']})\n\n# \u4e3a \"b\" \u5217\u7684\u6bcf\u4e2a\u503c\u52a0\u4e0a \"!a!\"\nfor i in range(len(df)):\n    df['b'][i] = '!a! ' + df['b'][i] + ' !a!'\n\n# \u6253\u5370\u4fee\u6539\u540e\u7684 dataframe\nprint(df)<\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre>  a                         b\n0 cm1  !A! b1-name xxxx !A!\n1 cm2  !A! name yyyy !A!\n2 cm3  !A! b3-name name zzzz !A!<\/pre>\n<p>\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u5982\u4f55\u5728 Pandas \u4e2d\u4e3a DataFrame \u7279\u5b9a\u5217\u7684\u503c\u6dfb\u52a0\u524d\u7f00\u548c\u540e\u7f00\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u5728 Pandas \u4e2d\u4e3a Da&#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-204490","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204490","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=204490"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204490\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204490"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204490"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}