{"id":1132409,"date":"2025-01-08T20:56:57","date_gmt":"2025-01-08T12:56:57","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1132409.html"},"modified":"2025-01-08T20:57:00","modified_gmt":"2025-01-08T12:57:00","slug":"python%e5%a6%82%e4%bd%95%e5%88%a0%e9%99%a4%e7%ad%89%e4%ba%8e%e6%9f%90%e4%b8%aa%e5%80%bc%e7%9a%84%e4%b8%80%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1132409.html","title":{"rendered":"python\u5982\u4f55\u5220\u9664\u7b49\u4e8e\u67d0\u4e2a\u503c\u7684\u4e00\u884c"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25101957\/a986fd70-f97e-4add-9514-c7677fd842dc.webp\" alt=\"python\u5982\u4f55\u5220\u9664\u7b49\u4e8e\u67d0\u4e2a\u503c\u7684\u4e00\u884c\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\u5220\u9664\u7b49\u4e8e\u67d0\u4e2a\u503c\u7684\u4e00\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528Pandas\u5e93\u3001\u5217\u8868\u89e3\u6790\u6216\u8005\u57fa\u672c\u7684\u6587\u4ef6\u64cd\u4f5c\u6765\u5b9e\u73b0\uff0c\u5177\u4f53\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528Pandas\u5e93\u3001\u5217\u8868\u89e3\u6790\u3001\u6587\u4ef6\u64cd\u4f5c\u3002<\/strong> \u5176\u4e2d\uff0c<strong>Pandas\u5e93<\/strong>\u662f\u4e00\u79cd\u9ad8\u6548\u4e14\u4fbf\u6377\u7684\u65b9\u5f0f\uff0c\u9002\u5408\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u4f7f\u7528Pandas\u5e93\u6765\u5220\u9664\u7b49\u4e8e\u67d0\u4e2a\u503c\u7684\u4e00\u884c\u7684\u65b9\u6cd5\uff0c\u5e76\u4e14\u4e5f\u4f1a\u6db5\u76d6\u5176\u4ed6\u4e24\u79cd\u65b9\u6cd5\uff0c\u4ee5\u4fbf\u4f60\u5728\u4e0d\u540c\u7684\u573a\u666f\u4e2d\u9009\u62e9\u6700\u9002\u5408\u7684\u65b9\u6848\u3002<\/p>\n<\/p>\n<p><h2>\u4e00\u3001\u4f7f\u7528Pandas\u5e93<\/h2>\n<\/p>\n<p><p>Pandas\u662fPython\u4e2d\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u5e93\uff0c\u975e\u5e38\u9002\u5408\u5904\u7406\u7ed3\u6784\u5316\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Pandas\u5220\u9664\u7b49\u4e8e\u67d0\u4e2a\u503c\u7684\u4e00\u884c\u7684\u5177\u4f53\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n<p><h3>1.1 \u5b89\u88c5\u548c\u5bfc\u5165Pandas<\/h3>\n<\/p>\n<p><p>\u9996\u5148\uff0c\u4f60\u9700\u8981\u5b89\u88c5Pandas\u5e93\u3002\u5982\u679c\u4f60\u8fd8\u6ca1\u6709\u5b89\u88c5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u5b89\u88c5\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-bash\">pip install pandas<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u7136\u540e\uff0c\u5728\u4f60\u7684Python\u811a\u672c\u4e2d\u5bfc\u5165Pandas\u5e93\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import pandas as pd<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>1.2 \u52a0\u8f7d\u6570\u636e<\/h3>\n<\/p>\n<p><p>\u5047\u8bbe\u4f60\u6709\u4e00\u4e2aCSV\u6587\u4ef6\uff08<code>data.csv<\/code>\uff09\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528<code>pd.read_csv<\/code>\u65b9\u6cd5\u6765\u52a0\u8f7d\u6570\u636e\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">df = pd.read_csv(&#39;data.csv&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>1.3 \u5220\u9664\u7b49\u4e8e\u67d0\u4e2a\u503c\u7684\u4e00\u884c<\/h3>\n<\/p>\n<p><p>\u5047\u8bbe\u4f60\u8981\u5220\u9664\u67d0\u4e00\u5217\u4e2d\u7b49\u4e8e\u67d0\u4e2a\u503c\u7684\u884c\uff0c\u4f8b\u5982\uff0c\u5220\u9664<code>ColumnA<\/code>\u4e2d\u503c\u4e3a<code>5<\/code>\u7684\u6240\u6709\u884c\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">df = df[df[&#39;ColumnA&#39;] != 5]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>1.4 \u4fdd\u5b58\u6570\u636e<\/h3>\n<\/p>\n<p><p>\u6700\u540e\uff0c\u5c06\u5904\u7406\u540e\u7684\u6570\u636e\u4fdd\u5b58\u56deCSV\u6587\u4ef6\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">df.to_csv(&#39;data.csv&#39;, index=False)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>\u4e8c\u3001\u4f7f\u7528\u5217\u8868\u89e3\u6790<\/h2>\n<\/p>\n<p><p>\u5217\u8868\u89e3\u6790\u662f\u4e00\u79cd\u7b80\u6d01\u4e14\u9ad8\u6548\u7684\u65b9\u5f0f\uff0c\u9002\u5408\u5904\u7406\u5c0f\u578b\u6570\u636e\u96c6\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u5217\u8868\u89e3\u6790\u5220\u9664\u7b49\u4e8e\u67d0\u4e2a\u503c\u7684\u4e00\u884c\u7684\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n<p><h3>2.1 \u521b\u5efa\u6570\u636e<\/h3>\n<\/p>\n<p><p>\u5047\u8bbe\u4f60\u6709\u4e00\u4e2a\u4e8c\u7ef4\u5217\u8868\uff08\u6bcf\u4e2a\u5b50\u5217\u8868\u8868\u793a\u4e00\u884c\u6570\u636e\uff09\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">data = [<\/p>\n<p>    [1, 2, 3],<\/p>\n<p>    [4, 5, 6],<\/p>\n<p>    [7, 8, 5],<\/p>\n<p>    [9, 10, 11]<\/p>\n<p>]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>2.2 \u5220\u9664\u7b49\u4e8e\u67d0\u4e2a\u503c\u7684\u4e00\u884c<\/h3>\n<\/p>\n<p><p>\u5047\u8bbe\u4f60\u8981\u5220\u9664\u7b2c\u4e8c\u5217\u4e2d\u503c\u4e3a<code>5<\/code>\u7684\u6240\u6709\u884c\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">data = [row for row in data if row[1] != 5]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>2.3 \u6253\u5370\u7ed3\u679c<\/h3>\n<\/p>\n<p><pre><code class=\"language-python\">print(data)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>\u4e09\u3001\u4f7f\u7528\u6587\u4ef6\u64cd\u4f5c<\/h2>\n<\/p>\n<p><p>\u6587\u4ef6\u64cd\u4f5c\u9002\u5408\u5904\u7406\u5927\u578b\u6587\u4ef6\uff0c\u5c24\u5176\u662f\u5f53\u4f60\u4e0d\u5e0c\u671b\u4e00\u6b21\u6027\u52a0\u8f7d\u6574\u4e2a\u6587\u4ef6\u5230\u5185\u5b58\u4e2d\u65f6\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u6587\u4ef6\u64cd\u4f5c\u5220\u9664\u7b49\u4e8e\u67d0\u4e2a\u503c\u7684\u4e00\u884c\u7684\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n<p><h3>3.1 \u8bfb\u53d6\u548c\u5199\u5165\u6587\u4ef6<\/h3>\n<\/p>\n<p><p>\u5047\u8bbe\u4f60\u6709\u4e00\u4e2a\u6587\u672c\u6587\u4ef6\uff08<code>data.txt<\/code>\uff09\uff0c\u6bcf\u884c\u8868\u793a\u4e00\u884c\u6570\u636e\uff0c\u5217\u4e4b\u95f4\u7528\u9017\u53f7\u5206\u9694\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">with open(&#39;data.txt&#39;, &#39;r&#39;) as file:<\/p>\n<p>    lines = file.readlines()<\/p>\n<p>with open(&#39;data.txt&#39;, &#39;w&#39;) as file:<\/p>\n<p>    for line in lines:<\/p>\n<p>        if line.strip().split(&#39;,&#39;)[1] != &#39;5&#39;:<\/p>\n<p>            file.write(line)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h2>\u56db\u3001\u7efc\u5408\u5bf9\u6bd4<\/h2>\n<\/p>\n<p><h3>4.1 \u4f18\u7f3a\u70b9\u5bf9\u6bd4<\/h3>\n<\/p>\n<ul>\n<li>\n<p><strong>Pandas\u5e93<\/strong><\/p>\n<\/p>\n<ul>\n<li><strong>\u4f18\u70b9<\/strong>\uff1a\u529f\u80fd\u5f3a\u5927\uff0c\u9002\u5408\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\uff0c\u4ee3\u7801\u7b80\u6d01\u3002<\/li>\n<li><strong>\u7f3a\u70b9<\/strong>\uff1a\u9700\u8981\u5b89\u88c5\u989d\u5916\u7684\u5e93\uff0c\u5360\u7528\u8f83\u591a\u5185\u5b58\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u5217\u8868\u89e3\u6790<\/strong><\/p>\n<\/p>\n<ul>\n<li><strong>\u4f18\u70b9<\/strong>\uff1a\u4ee3\u7801\u7b80\u6d01\uff0c\u9ad8\u6548\u3002<\/li>\n<li><strong>\u7f3a\u70b9<\/strong>\uff1a\u4e0d\u9002\u5408\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\uff0c\u5360\u7528\u8f83\u591a\u5185\u5b58\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u6587\u4ef6\u64cd\u4f5c<\/strong><\/p>\n<\/p>\n<ul>\n<li><strong>\u4f18\u70b9<\/strong>\uff1a\u9002\u5408\u5904\u7406\u5927\u578b\u6587\u4ef6\uff0c\u4e0d\u9700\u8981\u989d\u5916\u7684\u5e93\u3002<\/li>\n<li><strong>\u7f3a\u70b9<\/strong>\uff1a\u4ee3\u7801\u76f8\u5bf9\u590d\u6742\uff0c\u5904\u7406\u901f\u5ea6\u8f83\u6162\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><h3>4.2 \u9002\u7528\u573a\u666f<\/h3>\n<\/p>\n<ul>\n<li><strong>Pandas\u5e93<\/strong>\uff1a\u9002\u5408\u9700\u8981\u8fdb\u884c\u590d\u6742\u6570\u636e\u5206\u6790\u548c\u5904\u7406\u7684\u573a\u666f\u3002<\/li>\n<li><strong>\u5217\u8868\u89e3\u6790<\/strong>\uff1a\u9002\u5408\u5904\u7406\u5c0f\u578b\u6570\u636e\u96c6\uff0c\u4ee3\u7801\u7b80\u6d01\u3002<\/li>\n<li><strong>\u6587\u4ef6\u64cd\u4f5c<\/strong>\uff1a\u9002\u5408\u5904\u7406\u5927\u578b\u6587\u4ef6\uff0c\u4e0d\u5e0c\u671b\u4e00\u6b21\u6027\u52a0\u8f7d\u6574\u4e2a\u6587\u4ef6\u5230\u5185\u5b58\u4e2d\u3002<\/li>\n<\/ul>\n<p><h2>\u4e94\u3001\u603b\u7ed3<\/h2>\n<\/p>\n<p><p>\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u5728Python\u4e2d\u5220\u9664\u7b49\u4e8e\u67d0\u4e2a\u503c\u7684\u4e00\u884c\u7684\u4e09\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528Pandas\u5e93\u3001\u5217\u8868\u89e3\u6790\u548c\u6587\u4ef6\u64cd\u4f5c\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u4f18\u7f3a\u70b9\u548c\u9002\u7528\u573a\u666f\uff0c\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u4f60\u7684\u5177\u4f53\u9700\u6c42\u3002\u65e0\u8bba\u4f60\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\uff0c\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u80fd\u5e2e\u52a9\u4f60\u66f4\u9ad8\u6548\u5730\u5904\u7406\u6570\u636e\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u5220\u9664DataFrame\u4e2d\u503c\u7b49\u4e8e\u7279\u5b9a\u503c\u7684\u884c\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u4f7f\u7528Pandas\u5e93\u53ef\u4ee5\u65b9\u4fbf\u5730\u64cd\u4f5cDataFrame\u3002\u8981\u5220\u9664\u67d0\u4e2a\u7279\u5b9a\u503c\u7684\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u5e03\u5c14\u7d22\u5f15\u3002\u6bd4\u5982\uff0c\u5047\u8bbe\u4f60\u6709\u4e00\u4e2aDataFrame\u5e76\u60f3\u5220\u9664\u67d0\u5217\u4e2d\u7b49\u4e8e\u7279\u5b9a\u503c\u7684\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"language-python\">import pandas as pd\n\n# \u793a\u4f8bDataFrame\ndata = {&#39;A&#39;: [1, 2, 3, 4], &#39;B&#39;: [5, 6, 7, 8]}\ndf = pd.DataFrame(data)\n\n# \u5220\u9664B\u5217\u4e2d\u7b49\u4e8e6\u7684\u884c\ndf = df[df[&#39;B&#39;] != 6]\n<\/code><\/pre>\n<p>\u8fd9\u6837\uff0c\u6240\u6709B\u5217\u4e2d\u7b49\u4e8e6\u7684\u884c\u90fd\u5c06\u88ab\u5220\u9664\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\u5982\u4f55\u6839\u636e\u591a\u4e2a\u6761\u4ef6\u5220\u9664\u884c\uff1f<\/strong><br \/>\u5982\u679c\u9700\u8981\u6839\u636e\u591a\u4e2a\u6761\u4ef6\u5220\u9664\u884c\uff0c\u53ef\u4ee5\u7ed3\u5408\u591a\u4e2a\u5e03\u5c14\u6761\u4ef6\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u903b\u8f91\u8fd0\u7b97\u7b26<code>&amp;<\/code>\uff08\u4e0e\uff09\u6216<code>|<\/code>\uff08\u6216\uff09\u6765\u7b5b\u9009\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<pre><code class=\"language-python\"># \u5220\u9664A\u5217\u7b49\u4e8e2\u4e14B\u5217\u7b49\u4e8e6\u7684\u884c\ndf = df[~((df[&#39;A&#39;] == 2) &amp; (df[&#39;B&#39;] == 6))]\n<\/code><\/pre>\n<p>\u6b64\u4ee3\u7801\u6bb5\u5c06\u5220\u9664\u540c\u65f6\u6ee1\u8db3A\u5217\u7b49\u4e8e2\u548cB\u5217\u7b49\u4e8e6\u7684\u884c\u3002<\/p>\n<p><strong>\u5728\u5220\u9664\u884c\u540e\u5982\u4f55\u91cd\u7f6eDataFrame\u7684\u7d22\u5f15\uff1f<\/strong><br \/>\u5728\u5220\u9664\u884c\u540e\uff0cDataFrame\u7684\u7d22\u5f15\u53ef\u80fd\u4f1a\u53d8\u5f97\u4e0d\u8fde\u7eed\u3002\u5982\u679c\u9700\u8981\u91cd\u7f6e\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528<code>reset_index()<\/code>\u65b9\u6cd5\u3002\u53ef\u4ee5\u9009\u62e9<code>drop=True<\/code>\u6765\u907f\u514d\u5c06\u65e7\u7d22\u5f15\u4f5c\u4e3a\u65b0\u5217\u6dfb\u52a0\u5230DataFrame\u4e2d\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-python\"># \u91cd\u7f6e\u7d22\u5f15\ndf.reset_index(drop=True, inplace=True)\n<\/code><\/pre>\n<p>\u8fd9\u6837\uff0cDataFrame\u7684\u7d22\u5f15\u5c06\u91cd\u65b0\u6392\u5217\uff0c\u786e\u4fdd\u4ece0\u5f00\u59cb\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u5220\u9664\u7b49\u4e8e\u67d0\u4e2a\u503c\u7684\u4e00\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528Pandas\u5e93\u3001\u5217\u8868\u89e3\u6790\u6216\u8005\u57fa\u672c\u7684\u6587\u4ef6\u64cd\u4f5c\u6765\u5b9e\u73b0\uff0c\u5177\u4f53\u65b9\u6cd5\u5305\u62ec\uff1a [&hellip;]","protected":false},"author":3,"featured_media":1132418,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1132409"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1132409"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1132409\/revisions"}],"predecessor-version":[{"id":1132421,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1132409\/revisions\/1132421"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1132418"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1132409"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1132409"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1132409"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}