{"id":112728,"date":"2026-10-04T17:24:58","date_gmt":"2026-10-04T09:24:58","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/112728.html"},"modified":"2026-10-04T17:24:58","modified_gmt":"2026-10-04T09:24:58","slug":"%e8%ae%a4%e8%af%86%e6%95%b0%e6%8d%ae%e9%9b%86%ef%bc%9a%e7%94%a8-pandas-%e5%ae%8c%e6%88%90%e6%95%b0%e6%8d%ae%e6%a6%82%e8%a7%88%e4%b8%8e%e6%8e%a2%e7%b4%a2","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/112728.html","title":{"rendered":"\u8ba4\u8bc6\u6570\u636e\u96c6\uff1a\u7528 pandas \u5b8c\u6210\u6570\u636e\u6982\u89c8\u4e0e\u63a2\u7d22"},"content":{"rendered":"<h3>\u6458\u8981<\/h3>\n<p>\u62ff\u5230\u4e00\u4efd\u6570\u636e\u540e&#xff0c;\u4e0d\u5e94\u8be5\u9a6c\u4e0a\u5f00\u59cb\u6e05\u6d17\u3001\u5206\u7ec4\u6216\u5efa\u6a21\u3002\u7b2c\u4e00\u6b65\u5e94\u5148\u8ba4\u8bc6\u6570\u636e\u96c6&#xff1a;\u6709\u591a\u5c11\u884c\u3001\u591a\u5c11\u5217\u3001\u5b57\u6bb5\u542b\u4e49\u662f\u4ec0\u4e48\u3001\u6570\u636e\u7c7b\u578b\u662f\u5426\u6b63\u786e\u3001\u7f3a\u5931\u503c\u5206\u5e03\u5982\u4f55\u3001\u6570\u503c\u8303\u56f4\u662f\u5426\u5f02\u5e38\u3001\u5206\u7c7b\u5b57\u6bb5\u6709\u54ea\u4e9b\u53d6\u503c\u3002<\/p>\n<p>\u672c\u6587\u56f4\u7ed5 pandas \u7684\u6570\u636e\u6982\u89c8\u80fd\u529b&#xff0c;\u4ecb\u7ecd head\u3001info\u3001describe\u3001shape\u3001dtypes\u3001isna\u3001value_counts\u3001nunique \u7b49\u5e38\u7528\u65b9\u6cd5&#xff0c;\u5e76\u901a\u8fc7\u4e00\u4efd\u8ba2\u5355\u6570\u636e\u793a\u4f8b&#xff0c;\u5efa\u7acb\u4e00\u5957\u62ff\u5230\u6570\u636e\u540e\u7684\u63a2\u7d22\u68c0\u67e5\u6d41\u7a0b\u3002<\/p>\n<h3>\u4e00\u3001\u80cc\u666f\u4e0e\u95ee\u9898<\/h3>\n<p>\u5f88\u591a\u6570\u636e\u5206\u6790\u9519\u8bef\u4e0d\u662f\u51fa\u73b0\u5728\u590d\u6742\u7b97\u6cd5&#xff0c;\u800c\u662f\u51fa\u73b0\u5728\u6700\u5f00\u59cb\u7684\u6570\u636e\u7406\u89e3\u9636\u6bb5&#xff1a;<\/p>\n<ul>\n<li>\u65e5\u671f\u5b57\u6bb5\u88ab\u5f53\u6210\u5b57\u7b26\u4e32\u5904\u7406\u3002<\/li>\n<li>\u91d1\u989d\u5b57\u6bb5\u6df7\u5165\u4e86\u7a7a\u503c\u3001\u5b57\u7b26\u6216\u5f02\u5e38\u8d1f\u6570\u3002<\/li>\n<li>\u5206\u7c7b\u5b57\u6bb5\u5b58\u5728\u5927\u5c0f\u5199\u3001\u7a7a\u683c\u548c\u522b\u540d\u95ee\u9898\u3002<\/li>\n<li>\u4e3b\u952e\u5e76\u4e0d\u552f\u4e00&#xff0c;\u5bfc\u81f4\u5408\u5e76\u540e\u6570\u636e\u91cf\u81a8\u80c0\u3002<\/li>\n<li>\u7f3a\u5931\u503c\u96c6\u4e2d\u5728\u67d0\u4e9b\u4e1a\u52a1\u72b6\u6001\u4e2d&#xff0c;\u88ab\u8bef\u8ba4\u4e3a\u968f\u673a\u7f3a\u5931\u3002<\/li>\n<li>\u7edf\u8ba1\u6307\u6807\u76f4\u63a5\u57fa\u4e8e\u810f\u6570\u636e\u8ba1\u7b97&#xff0c;\u5bfc\u81f4\u7ed3\u8bba\u504f\u5dee\u3002<\/li>\n<\/ul>\n<p>\u56e0\u6b64&#xff0c;\u6570\u636e\u5206\u6790\u7684\u7b2c\u4e00\u6b65\u4e0d\u662f\u201c\u7b97\u7ed3\u679c\u201d&#xff0c;\u800c\u662f\u56de\u7b54\u51e0\u4e2a\u57fa\u7840\u95ee\u9898&#xff1a;<\/p>\n<p>\u8fd9\u4efd\u6570\u636e\u6709\u591a\u5927&#xff1f;<br \/>\n\u6bcf\u4e00\u5217\u662f\u4ec0\u4e48\u542b\u4e49&#xff1f;<br \/>\n\u7c7b\u578b\u662f\u5426\u7b26\u5408\u4e1a\u52a1\u9884\u671f&#xff1f;<br \/>\n\u6709\u6ca1\u6709\u7f3a\u5931\u3001\u91cd\u590d\u548c\u5f02\u5e38&#xff1f;<br \/>\n\u5173\u952e\u5b57\u6bb5\u7684\u5206\u5e03\u662f\u5426\u5408\u7406&#xff1f;<br \/>\n\u662f\u5426\u53ef\u4ee5\u652f\u6491\u540e\u7eed\u5206\u6790\u76ee\u6807&#xff1f;<\/p>\n<p>\u6570\u636e\u6982\u89c8\u5c31\u662f\u5728\u6b63\u5f0f\u5904\u7406\u524d\u5efa\u7acb\u5bf9\u6570\u636e\u7684\u7b2c\u4e00\u5c42\u8ba4\u77e5\u3002<\/p>\n<h3>\u4e8c\u3001\u6838\u5fc3\u6982\u5ff5<\/h3>\n<h4>1. \u6570\u636e\u89c4\u6a21<\/h4>\n<p>\u6570\u636e\u89c4\u6a21\u5305\u62ec\u884c\u6570\u3001\u5217\u6570\u3001\u5185\u5b58\u5360\u7528\u548c\u5b57\u6bb5\u6570\u91cf\u3002pandas \u4e2d\u5e38\u7528&#xff1a;<\/p>\n<table>\n<tr>\u65b9\u6cd5\u4f5c\u7528<\/tr>\n<tbody>\n<tr>\n<td>df.shape<\/td>\n<td>\u67e5\u770b\u884c\u6570\u548c\u5217\u6570<\/td>\n<\/tr>\n<tr>\n<td>df.columns<\/td>\n<td>\u67e5\u770b\u5217\u540d<\/td>\n<\/tr>\n<tr>\n<td>df.info()<\/td>\n<td>\u67e5\u770b\u975e\u7a7a\u6570\u91cf\u3001\u7c7b\u578b\u548c\u5185\u5b58<\/td>\n<\/tr>\n<tr>\n<td>df.memory_usage()<\/td>\n<td>\u67e5\u770b\u5185\u5b58\u5360\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u89c4\u6a21\u51b3\u5b9a\u4e86\u540e\u7eed\u5904\u7406\u65b9\u5f0f\u3002\u51e0\u5343\u884c\u6570\u636e\u53ef\u4ee5\u76f4\u63a5\u4ea4\u4e92\u5f0f\u5206\u6790&#xff0c;\u51e0\u5343\u4e07\u884c\u6570\u636e\u5219\u9700\u8981\u5206\u5757\u3001\u6570\u636e\u5e93\u6216\u66f4\u9ad8\u6027\u80fd\u5de5\u5177\u3002<\/p>\n<h4>2. \u5b57\u6bb5\u7c7b\u578b<\/h4>\n<p>\u5b57\u6bb5\u7c7b\u578b\u51b3\u5b9a\u80fd\u5426\u8fdb\u884c\u6b63\u786e\u8ba1\u7b97&#xff1a;<\/p>\n<ul>\n<li>\u91d1\u989d\u548c\u6570\u91cf\u5e94\u662f\u6570\u503c\u7c7b\u578b\u3002<\/li>\n<li>\u65e5\u671f\u5e94\u8f6c\u6362\u4e3a\u65e5\u671f\u65f6\u95f4\u7c7b\u578b\u3002<\/li>\n<li>\u72b6\u6001\u3001\u5730\u533a\u3001\u6e20\u9053\u9002\u5408\u4f5c\u4e3a\u5206\u7c7b\u5b57\u6bb5\u3002<\/li>\n<li>ID \u5b57\u6bb5\u901a\u5e38\u5e94\u4f5c\u4e3a\u5b57\u7b26\u4e32\u5904\u7406&#xff0c;\u800c\u4e0d\u662f\u6570\u503c\u3002<\/li>\n<\/ul>\n<p>ID \u5982\u679c\u88ab\u5f53\u4f5c\u6570\u5b57&#xff0c;\u53ef\u80fd\u4e22\u5931\u524d\u5bfc\u96f6&#xff0c;\u4f8b\u5982\u8ba2\u5355\u53f7 000123 \u53d8\u6210 123\u3002<\/p>\n<h4>3. \u7f3a\u5931\u503c<\/h4>\n<p>\u7f3a\u5931\u503c\u5e76\u4e0d\u4e00\u5b9a\u662f\u9519\u8bef\u3002\u5b83\u53ef\u80fd\u8868\u793a&#xff1a;<\/p>\n<ul>\n<li>\u4e1a\u52a1\u4e0a\u5c1a\u672a\u53d1\u751f\u3002<\/li>\n<li>\u6570\u636e\u91c7\u96c6\u5931\u8d25\u3002<\/li>\n<li>\u7528\u6237\u672a\u586b\u5199\u3002<\/li>\n<li>\u67d0\u4e9b\u7c7b\u578b\u7684\u8bb0\u5f55\u6ca1\u6709\u8be5\u5b57\u6bb5\u3002<\/li>\n<li>\u7cfb\u7edf\u8fc1\u79fb\u5bfc\u81f4\u5386\u53f2\u6570\u636e\u4e0d\u5b8c\u6574\u3002<\/li>\n<\/ul>\n<p>\u5904\u7406\u7f3a\u5931\u503c\u524d&#xff0c;\u5fc5\u987b\u5148\u7406\u89e3\u7f3a\u5931\u539f\u56e0\u3002<\/p>\n<h4>4. \u5206\u5e03\u4e0e\u5f02\u5e38<\/h4>\n<p>\u6570\u636e\u5206\u5e03\u5e2e\u52a9\u5224\u65ad\u5b57\u6bb5\u662f\u5426\u5408\u7406\u3002\u4f8b\u5982&#xff1a;<\/p>\n<ul>\n<li>\u91d1\u989d\u662f\u5426\u51fa\u73b0\u8d1f\u6570\u3002<\/li>\n<li>\u5e74\u9f84\u662f\u5426\u8d85\u8fc7\u5408\u7406\u8303\u56f4\u3002<\/li>\n<li>\u72b6\u6001\u5b57\u6bb5\u662f\u5426\u51fa\u73b0\u672a\u77e5\u503c\u3002<\/li>\n<li>\u65e5\u671f\u662f\u5426\u8d85\u51fa\u5206\u6790\u7a97\u53e3\u3002<\/li>\n<li>\u67d0\u4e2a\u6e20\u9053\u662f\u5426\u5360\u6bd4\u5f02\u5e38\u9ad8\u3002<\/li>\n<\/ul>\n<p>\u63a2\u7d22\u9636\u6bb5\u4e0d\u4e00\u5b9a\u7acb\u5373\u4fee\u590d\u95ee\u9898&#xff0c;\u4f46\u8981\u8bb0\u5f55\u6240\u6709\u53ef\u7591\u70b9\u3002<\/p>\n<h3>\u4e09\u3001\u5de5\u4f5c\u539f\u7406<\/h3>\n<h4>1. \u6570\u636e\u63a2\u7d22\u6d41\u7a0b<\/h4>\n<p>\u4e00\u5957\u901a\u7528\u6d41\u7a0b\u5982\u4e0b&#xff1a;<\/p>\n<p>\u8bfb\u53d6\u6570\u636e<br \/>\n  \u2192 \u67e5\u770b\u6837\u4f8b\u884c<br \/>\n  \u2192 \u68c0\u67e5\u89c4\u6a21\u548c\u5217\u540d<br \/>\n  \u2192 \u68c0\u67e5\u6570\u636e\u7c7b\u578b<br \/>\n  \u2192 \u68c0\u67e5\u7f3a\u5931\u503c<br \/>\n  \u2192 \u68c0\u67e5\u91cd\u590d\u503c<br \/>\n  \u2192 \u68c0\u67e5\u6570\u503c\u5206\u5e03<br \/>\n  \u2192 \u68c0\u67e5\u5206\u7c7b\u5b57\u6bb5\u53d6\u503c<br \/>\n  \u2192 \u8bb0\u5f55\u6570\u636e\u95ee\u9898<\/p>\n<p>\u63a2\u7d22\u6d41\u7a0b\u7684\u76ee\u6807\u4e0d\u662f\u628a\u6240\u6709\u95ee\u9898\u4e00\u6b21\u6027\u89e3\u51b3&#xff0c;\u800c\u662f\u5f62\u6210\u6570\u636e\u753b\u50cf\u3002<\/p>\n<h4>2. \u6837\u4f8b\u884c\u7684\u4ef7\u503c<\/h4>\n<p>head() \u548c tail() \u53ef\u4ee5\u5feb\u901f\u89c2\u5bdf\u6570\u636e\u683c\u5f0f&#xff0c;\u4f46\u4e0d\u8981\u53ea\u770b\u524d\u51e0\u884c\u5c31\u4e0b\u7ed3\u8bba\u3002\u5f88\u591a\u6570\u636e\u6587\u4ef6\u524d\u51e0\u884c\u53ef\u80fd\u662f\u7279\u6b8a\u6837\u672c&#xff0c;\u4f8b\u5982\u6d4b\u8bd5\u6570\u636e\u3001\u5386\u53f2\u6570\u636e\u6216\u5bfc\u51fa\u8bf4\u660e\u3002<\/p>\n<p>\u53ef\u4ee5\u968f\u673a\u62bd\u6837\u67e5\u770b&#xff1a;<\/p>\n<p>df<span class=\"token punctuation\">.<\/span>sample<span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span> random_state<span class=\"token operator\">&#061;<\/span><span class=\"token number\">42<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u968f\u673a\u6837\u672c\u66f4\u5bb9\u6613\u66b4\u9732\u5b57\u6bb5\u683c\u5f0f\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002<\/p>\n<h4>3. \u7edf\u8ba1\u63cf\u8ff0\u7684\u8fb9\u754c<\/h4>\n<p>describe() \u5bf9\u6570\u503c\u5217\u975e\u5e38\u6709\u7528&#xff0c;\u4f46\u5b83\u53ea\u80fd\u63d0\u4f9b\u57fa\u7840\u7edf\u8ba1\u3002\u5e73\u5747\u503c\u3001\u6700\u5927\u503c\u548c\u6700\u5c0f\u503c\u4e0d\u80fd\u66ff\u4ee3\u4e1a\u52a1\u5224\u65ad\u3002\u4f8b\u5982\u8ba2\u5355\u91d1\u989d\u6700\u5927\u503c\u5f88\u5927&#xff0c;\u53ef\u80fd\u662f\u5927\u5ba2\u6237\u8ba2\u5355&#xff0c;\u4e5f\u53ef\u80fd\u662f\u91d1\u989d\u5355\u4f4d\u9519\u8bef\u3002<\/p>\n<h4>4. \u63a2\u7d22\u7ed3\u679c\u5e94\u53ef\u590d\u7528<\/h4>\n<p>\u6570\u636e\u63a2\u7d22\u4e0d\u5e94\u53ea\u505c\u7559\u5728 Notebook \u8f93\u51fa\u4e2d\u3002\u53ef\u4ee5\u5c06\u5173\u952e\u68c0\u67e5\u5c01\u88c5\u4e3a\u51fd\u6570&#xff0c;\u5f62\u6210\u6bcf\u6b21\u8bfb\u53d6\u6570\u636e\u540e\u7684\u56fa\u5b9a\u68c0\u67e5\u6d41\u7a0b\u3002<\/p>\n<h3>\u56db\u3001\u5b9e\u6218\u793a\u4f8b<\/h3>\n<h4>1. \u51c6\u5907\u793a\u4f8b\u6570\u636e<\/h4>\n<p><span class=\"token keyword\">from<\/span> pathlib <span class=\"token keyword\">import<\/span> Path<\/p>\n<p><span class=\"token keyword\">import<\/span> pandas <span class=\"token keyword\">as<\/span> pd<\/p>\n<p>data_dir <span class=\"token operator\">&#061;<\/span> Path<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;data&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\ndata_dir<span class=\"token punctuation\">.<\/span>mkdir<span class=\"token punctuation\">(<\/span>exist_ok<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>orders <span class=\"token operator\">&#061;<\/span> pd<span class=\"token punctuation\">.<\/span>DataFrame<span class=\"token punctuation\">(<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;order_id&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;A001&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;A002&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;A003&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;A004&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;A004&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;A006&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;customer&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;Alice&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Bob&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Carol&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;David&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;David&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;region&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u534e\u4e1c&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u534e\u5357&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u534e\u4e1c&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u534e\u5317&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u534e\u5317&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u534e\u4e1c &#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;amount&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token number\">1200.0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">800.0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1560.0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">20.0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">20.0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">None<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;paid&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;pending&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;paid&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;cancelled&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;cancelled&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Paid&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;order_date&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n            <span class=\"token string\">&#034;2026-09-01&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;2026-09-02&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;2026-09-03&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;2026-09-04&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;2026-09-04&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token string\">&#034;bad-date&#034;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><\/p>\n<p>orders<span class=\"token punctuation\">.<\/span>to_csv<span class=\"token punctuation\">(<\/span>data_dir <span class=\"token operator\">\/<\/span> <span class=\"token string\">&#034;orders.csv&#034;<\/span><span class=\"token punctuation\">,<\/span> index<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">,<\/span> encoding<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;utf-8-sig&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8fd9\u4efd\u6570\u636e\u6545\u610f\u5305\u542b\u91cd\u590d\u8ba2\u5355\u3001\u7f3a\u5931\u5ba2\u6237\u3001\u8d1f\u91d1\u989d\u3001\u72b6\u6001\u5927\u5c0f\u5199\u4e0d\u4e00\u81f4\u3001\u5730\u533a\u7a7a\u683c\u548c\u9519\u8bef\u65e5\u671f\u3002<\/p>\n<h4>2. \u8bfb\u53d6\u6570\u636e\u5e76\u67e5\u770b\u6837\u4f8b<\/h4>\n<p><span class=\"token keyword\">import<\/span> pandas <span class=\"token keyword\">as<\/span> pd<\/p>\n<p>df <span class=\"token operator\">&#061;<\/span> pd<span class=\"token punctuation\">.<\/span>read_csv<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;data\/orders.csv&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">.<\/span>head<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">.<\/span>tail<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">.<\/span>sample<span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> random_state<span class=\"token operator\">&#061;<\/span><span class=\"token number\">42<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u6837\u4f8b\u67e5\u770b\u4e3b\u8981\u7528\u4e8e\u786e\u8ba4\u5217\u540d\u3001\u5b57\u6bb5\u5185\u5bb9\u548c\u660e\u663e\u683c\u5f0f\u95ee\u9898\u3002<\/p>\n<h4>3. \u67e5\u770b\u89c4\u6a21\u548c\u5b57\u6bb5<\/h4>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;shape:&#034;<\/span><span class=\"token punctuation\">,<\/span> df<span class=\"token punctuation\">.<\/span>shape<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;columns:&#034;<\/span><span class=\"token punctuation\">,<\/span> df<span class=\"token punctuation\">.<\/span>columns<span class=\"token punctuation\">.<\/span>tolist<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">.<\/span>info<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>info() \u4e2d\u7684\u975e\u7a7a\u6570\u91cf\u53ef\u4ee5\u5feb\u901f\u5224\u65ad\u54ea\u4e9b\u5217\u5b58\u5728\u7f3a\u5931\u3002\u5bf9\u8c61\u7c7b\u578b\u5217\u9700\u8981\u7ee7\u7eed\u5224\u65ad\u662f\u5b57\u7b26\u4e32\u3001\u6df7\u5408\u7c7b\u578b\u8fd8\u662f\u65e5\u671f\u672a\u8f6c\u6362\u3002<\/p>\n<h4>4. \u68c0\u67e5\u6570\u636e\u7c7b\u578b<\/h4>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">.<\/span>dtypes<span class=\"token punctuation\">)<\/span><\/p>\n<p>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;amount&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> pd<span class=\"token punctuation\">.<\/span>to_numeric<span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;amount&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> errors<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;coerce&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\ndf<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;order_date&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> pd<span class=\"token punctuation\">.<\/span>to_datetime<span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;order_date&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> errors<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;coerce&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">.<\/span>dtypes<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8f6c\u6362\u540e\u5e94\u91cd\u65b0\u68c0\u67e5\u7f3a\u5931\u503c&#xff0c;\u56e0\u4e3a\u65e0\u6cd5\u89e3\u6790\u7684\u6570\u636e\u4f1a\u88ab\u8f6c\u6362\u4e3a\u7f3a\u5931\u3002<\/p>\n<h4>5. \u7f3a\u5931\u503c\u5206\u6790<\/h4>\n<p>missing_count <span class=\"token operator\">&#061;<\/span> df<span class=\"token punctuation\">.<\/span>isna<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">sum<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\nmissing_rate <span class=\"token operator\">&#061;<\/span> df<span class=\"token punctuation\">.<\/span>isna<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>mean<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>sort_values<span class=\"token punctuation\">(<\/span>ascending<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>missing_count<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>missing_rate<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u7f3a\u5931\u7387\u9ad8\u7684\u5b57\u6bb5\u4e0d\u4e00\u5b9a\u8981\u5220\u9664&#xff0c;\u5148\u5224\u65ad\u5b83\u662f\u5426\u5bf9\u5f53\u524d\u5206\u6790\u76ee\u6807\u5173\u952e\u3002<\/p>\n<h4>6. \u91cd\u590d\u503c\u68c0\u67e5<\/h4>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;duplicated rows:&#034;<\/span><span class=\"token punctuation\">,<\/span> df<span class=\"token punctuation\">.<\/span>duplicated<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">sum<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;duplicated order_id:&#034;<\/span><span class=\"token punctuation\">,<\/span> df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;order_id&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>duplicated<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">sum<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">.<\/span>loc<span class=\"token punctuation\">[<\/span>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;order_id&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>duplicated<span class=\"token punctuation\">(<\/span>keep<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u6574\u884c\u91cd\u590d\u548c\u4e1a\u52a1\u4e3b\u952e\u91cd\u590d\u662f\u4e24\u7c7b\u4e0d\u540c\u95ee\u9898\u3002\u4e3b\u952e\u91cd\u590d\u53ef\u80fd\u610f\u5473\u7740\u91cd\u590d\u5bfc\u51fa\u3001\u62c6\u5355\u3001\u9000\u6b3e\u8bb0\u5f55\u6216\u6570\u636e\u9519\u8bef\u3002<\/p>\n<h4>7. \u6570\u503c\u5b57\u6bb5\u6982\u89c8<\/h4>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;amount&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>describe<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">.<\/span>loc<span class=\"token punctuation\">[<\/span>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;amount&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;order_id&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;amount&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8d1f\u91d1\u989d\u53ef\u80fd\u662f\u9000\u6b3e&#xff0c;\u4e5f\u53ef\u80fd\u662f\u9519\u8bef\u5f55\u5165\u3002\u63a2\u7d22\u9636\u6bb5\u5e94\u628a\u5b83\u6807\u8bb0\u51fa\u6765&#xff0c;\u540e\u7eed\u6839\u636e\u4e1a\u52a1\u89c4\u5219\u5904\u7406\u3002<\/p>\n<h4>8. \u5206\u7c7b\u5b57\u6bb5\u5206\u5e03<\/h4>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>value_counts<span class=\"token punctuation\">(<\/span>dropna<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;region&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>value_counts<span class=\"token punctuation\">(<\/span>dropna<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u72b6\u6001\u5b57\u6bb5\u4e2d paid \u548c Paid \u53ef\u80fd\u8868\u793a\u540c\u4e00\u4e2a\u542b\u4e49&#xff0c;\u5730\u533a\u5b57\u6bb5\u4e2d\u7684 \u534e\u4e1c \u548c \u534e\u4e1c  \u4e5f\u53ef\u80fd\u56e0\u4e3a\u7a7a\u683c\u88ab\u5f53\u6210\u4e0d\u540c\u503c\u3002<\/p>\n<h4>9. \u5b57\u7b26\u4e32\u6807\u51c6\u5316\u9884\u89c8<\/h4>\n<p>preview <span class=\"token operator\">&#061;<\/span> df<span class=\"token punctuation\">.<\/span>copy<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\npreview<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;status_clean&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> preview<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;status&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">.<\/span>strip<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">.<\/span>lower<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\npreview<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;region_clean&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> preview<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;region&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">.<\/span>strip<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>preview<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;status_clean&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>value_counts<span class=\"token punctuation\">(<\/span>dropna<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>preview<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;region_clean&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>value_counts<span class=\"token punctuation\">(<\/span>dropna<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5148\u505a\u9884\u89c8&#xff0c;\u4e0d\u6025\u7740\u8986\u76d6\u539f\u5b57\u6bb5\u3002\u786e\u8ba4\u89c4\u5219\u6b63\u786e\u540e&#xff0c;\u518d\u8fdb\u5165\u6b63\u5f0f\u6e05\u6d17\u9636\u6bb5\u3002<\/p>\n<h4>10. \u5c01\u88c5\u63a2\u7d22\u51fd\u6570<\/h4>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">profile_dataframe<\/span><span class=\"token punctuation\">(<\/span>frame<span class=\"token punctuation\">:<\/span> pd<span class=\"token punctuation\">.<\/span>DataFrame<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">dict<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;shape&#034;<\/span><span class=\"token punctuation\">:<\/span> frame<span class=\"token punctuation\">.<\/span>shape<span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;columns&#034;<\/span><span class=\"token punctuation\">:<\/span> frame<span class=\"token punctuation\">.<\/span>columns<span class=\"token punctuation\">.<\/span>tolist<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;dtypes&#034;<\/span><span class=\"token punctuation\">:<\/span> frame<span class=\"token punctuation\">.<\/span>dtypes<span class=\"token punctuation\">.<\/span>astype<span class=\"token punctuation\">(<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>to_dict<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;missing_count&#034;<\/span><span class=\"token punctuation\">:<\/span> frame<span class=\"token punctuation\">.<\/span>isna<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">sum<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>to_dict<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;missing_rate&#034;<\/span><span class=\"token punctuation\">:<\/span> frame<span class=\"token punctuation\">.<\/span>isna<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>mean<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">round<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>to_dict<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;duplicated_rows&#034;<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token builtin\">int<\/span><span class=\"token punctuation\">(<\/span>frame<span class=\"token punctuation\">.<\/span>duplicated<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">sum<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>profile <span class=\"token operator\">&#061;<\/span> profile_dataframe<span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>profile<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5c01\u88c5\u540e\u53ef\u4ee5\u5bf9\u4e0d\u540c\u6570\u636e\u6587\u4ef6\u91cd\u590d\u4f7f\u7528&#xff0c;\u4e5f\u53ef\u4ee5\u8f93\u51fa\u4e3a JSON \u6216 Markdown \u62a5\u544a\u3002<\/p>\n<h4>11. \u8f93\u51fa\u6570\u636e\u6982\u89c8\u62a5\u544a<\/h4>\n<p><span class=\"token keyword\">from<\/span> pathlib <span class=\"token keyword\">import<\/span> Path<\/p>\n<p>output_dir <span class=\"token operator\">&#061;<\/span> Path<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;output&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\noutput_dir<span class=\"token punctuation\">.<\/span>mkdir<span class=\"token punctuation\">(<\/span>exist_ok<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>summary <span class=\"token operator\">&#061;<\/span> pd<span class=\"token punctuation\">.<\/span>DataFrame<span class=\"token punctuation\">(<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token string\">&#034;dtype&#034;<\/span><span class=\"token punctuation\">:<\/span> df<span class=\"token punctuation\">.<\/span>dtypes<span class=\"token punctuation\">.<\/span>astype<span class=\"token punctuation\">(<\/span><span class=\"token builtin\">str<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;missing_count&#034;<\/span><span class=\"token punctuation\">:<\/span> df<span class=\"token punctuation\">.<\/span>isna<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">sum<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;missing_rate&#034;<\/span><span class=\"token punctuation\">:<\/span> df<span class=\"token punctuation\">.<\/span>isna<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>mean<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;unique_count&#034;<\/span><span class=\"token punctuation\">:<\/span> df<span class=\"token punctuation\">.<\/span>nunique<span class=\"token punctuation\">(<\/span>dropna<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><\/p>\n<p>summary<span class=\"token punctuation\">.<\/span>to_csv<span class=\"token punctuation\">(<\/span>output_dir <span class=\"token operator\">\/<\/span> <span class=\"token string\">&#034;data_profile.csv&#034;<\/span><span class=\"token punctuation\">,<\/span> encoding<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;utf-8-sig&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>summary<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8fd9\u79cd\u5b57\u6bb5\u7ea7\u62a5\u544a\u9002\u5408\u653e\u8fdb\u6570\u636e\u4ea4\u4ed8\u6d41\u7a0b&#xff0c;\u7528\u4e8e\u548c\u4e1a\u52a1\u540c\u5b66\u786e\u8ba4\u5b57\u6bb5\u8d28\u91cf\u3002<\/p>\n<h3>\u4e94\u3001\u5e38\u89c1\u95ee\u9898\u4e0e\u5b9e\u8df5\u5efa\u8bae<\/h3>\n<h4>1. \u4e3a\u4ec0\u4e48\u4e0d\u80fd\u53ea\u770b head()&#xff1f;<\/h4>\n<p>\u524d\u51e0\u884c\u53ef\u80fd\u6070\u597d\u5f88\u5e72\u51c0&#xff0c;\u4e0d\u80fd\u4ee3\u8868\u6574\u4f53\u3002\u5efa\u8bae\u7ed3\u5408 sample()\u3001\u7f3a\u5931\u503c\u7edf\u8ba1\u3001\u5206\u7c7b\u5206\u5e03\u548c\u6570\u503c\u63cf\u8ff0\u4e00\u8d77\u5224\u65ad\u3002<\/p>\n<h4>2. describe() \u662f\u5426\u80fd\u53d1\u73b0\u6240\u6709\u5f02\u5e38&#xff1f;<\/h4>\n<p>\u4e0d\u80fd\u3002\u5b83\u53ea\u80fd\u5e2e\u52a9\u53d1\u73b0\u660e\u663e\u7684\u6570\u503c\u6781\u7aef\u503c\u3002\u5206\u7c7b\u503c\u62fc\u5199\u9519\u8bef\u3001\u65e5\u671f\u89e3\u6790\u5931\u8d25\u3001\u4e3b\u952e\u91cd\u590d\u3001\u4e1a\u52a1\u72b6\u6001\u975e\u6cd5&#xff0c;\u9700\u8981\u5355\u72ec\u68c0\u67e5\u3002<\/p>\n<h4>3. \u7f3a\u5931\u503c\u662f\u5426\u5e94\u8be5\u5168\u90e8\u586b 0&#xff1f;<\/h4>\n<p>\u4e0d\u5e94\u8be5\u30020 \u662f\u4e00\u4e2a\u6709\u610f\u4e49\u7684\u6570\u503c&#xff0c;\u7f3a\u5931\u8868\u793a\u672a\u77e5\u6216\u4e0d\u5b58\u5728\u3002\u628a\u7f3a\u5931\u503c\u586b 0 \u53ef\u80fd\u6539\u53d8\u7edf\u8ba1\u7ed3\u679c\u3002\u5e94\u6839\u636e\u5b57\u6bb5\u8bed\u4e49\u51b3\u5b9a\u586b\u5145\u3001\u5220\u9664\u3001\u4fdd\u7559\u6216\u5355\u72ec\u6807\u8bb0\u3002<\/p>\n<h4>4. \u4e3a\u4ec0\u4e48 ID \u5b57\u6bb5\u5efa\u8bae\u8bfb\u6210\u5b57\u7b26\u4e32&#xff1f;<\/h4>\n<p>ID \u53ef\u80fd\u5305\u542b\u524d\u5bfc\u96f6\u3001\u5b57\u6bcd\u3001\u8fde\u63a5\u7b26\u6216\u8d85\u957f\u6570\u5b57\u3002\u8bfb\u6210\u6570\u503c\u53ef\u80fd\u5bfc\u81f4\u683c\u5f0f\u4e22\u5931\u6216\u7cbe\u5ea6\u95ee\u9898\u3002\u8ba2\u5355\u53f7\u3001\u624b\u673a\u53f7\u3001\u8eab\u4efd\u8bc1\u53f7\u7b49\u901a\u5e38\u90fd\u5e94\u8be5\u6309\u5b57\u7b26\u4e32\u5904\u7406\u3002<\/p>\n<h4>5. \u63a2\u7d22\u9636\u6bb5\u8981\u4e0d\u8981\u76f4\u63a5\u4fee\u6539\u6570\u636e&#xff1f;<\/h4>\n<p>\u5efa\u8bae\u5148\u751f\u6210\u95ee\u9898\u6e05\u5355\u548c\u9884\u89c8\u7ed3\u679c&#xff0c;\u518d\u8fdb\u5165\u6b63\u5f0f\u6e05\u6d17\u3002\u63a2\u7d22\u548c\u6e05\u6d17\u5206\u5f00&#xff0c;\u53ef\u4ee5\u51cf\u5c11\u8bef\u4fee\u6539&#xff0c;\u4e5f\u4fbf\u4e8e\u590d\u76d8\u6bcf\u6761\u89c4\u5219\u7684\u539f\u56e0\u3002<\/p>\n<h3>\u516d\u3001\u8fdb\u9636\u601d\u8003<\/h3>\n<h4>1. \u5efa\u7acb\u6570\u636e\u5b57\u5178<\/h4>\n<p>\u6570\u636e\u5b57\u5178\u81f3\u5c11\u5305\u542b&#xff1a;<\/p>\n<table>\n<tr>\u5b57\u6bb5\u5185\u5bb9<\/tr>\n<tbody>\n<tr>\n<td>\u5b57\u6bb5\u540d<\/td>\n<td>\u6570\u636e\u6587\u4ef6\u4e2d\u7684\u5217\u540d<\/td>\n<\/tr>\n<tr>\n<td>\u4e2d\u6587\u542b\u4e49<\/td>\n<td>\u5b57\u6bb5\u4e1a\u52a1\u89e3\u91ca<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u7c7b\u578b<\/td>\n<td>\u5b57\u7b26\u4e32\u3001\u6570\u503c\u3001\u65e5\u671f\u7b49<\/td>\n<\/tr>\n<tr>\n<td>\u662f\u5426\u5fc5\u586b<\/td>\n<td>\u662f\u5426\u5141\u8bb8\u7f3a\u5931<\/td>\n<\/tr>\n<tr>\n<td>\u53d6\u503c\u8303\u56f4<\/td>\n<td>\u5408\u6cd5\u503c\u6216\u8303\u56f4<\/td>\n<\/tr>\n<tr>\n<td>\u793a\u4f8b<\/td>\n<td>\u5178\u578b\u6837\u4f8b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6ca1\u6709\u6570\u636e\u5b57\u5178\u65f6&#xff0c;\u5206\u6790\u4eba\u5458\u5bb9\u6613\u4f9d\u9760\u731c\u6d4b\u89e3\u91ca\u5b57\u6bb5\u3002<\/p>\n<h4>2. \u7528\u89c4\u5219\u6c89\u6dc0\u6570\u636e\u8d28\u91cf\u68c0\u67e5<\/h4>\n<p>\u63a2\u7d22\u9636\u6bb5\u53d1\u73b0\u7684\u95ee\u9898&#xff0c;\u53ef\u4ee5\u9010\u6b65\u53d8\u6210\u6570\u636e\u8d28\u91cf\u89c4\u5219&#xff1a;<\/p>\n<p>order_id \u4e0d\u5141\u8bb8\u4e3a\u7a7a<br \/>\norder_id \u5728\u8ba2\u5355\u4e3b\u8868\u4e2d\u5e94\u552f\u4e00<br \/>\namount \u4e0d\u5141\u8bb8\u4e3a\u7a7a<br \/>\namount \u5141\u8bb8\u4e3a\u8d1f\u6570\u65f6\u5fc5\u987b\u5bf9\u5e94\u9000\u6b3e\u72b6\u6001<br \/>\norder_date \u5fc5\u987b\u80fd\u89e3\u6790\u4e3a\u65e5\u671f<br \/>\nstatus \u5fc5\u987b\u5c5e\u4e8e\u9884\u5b9a\u4e49\u679a\u4e3e<\/p>\n<p>\u8fd9\u4e9b\u89c4\u5219\u540e\u7eed\u53ef\u4ee5\u7528\u6d4b\u8bd5\u6216\u6570\u636e\u8d28\u91cf\u5de5\u5177\u81ea\u52a8\u6267\u884c\u3002<\/p>\n<h4>3. \u4ece\u63a2\u7d22\u5230\u81ea\u52a8\u5316<\/h4>\n<p>\u624b\u5de5\u63a2\u7d22\u9002\u5408\u65b0\u6570\u636e\u96c6\u3002\u7a33\u5b9a\u6570\u636e\u6e90\u5e94\u9010\u6b65\u81ea\u52a8\u5316&#xff1a;<\/p>\n<p>\u6570\u636e\u8bfb\u53d6<br \/>\n  \u2192 \u5b57\u6bb5\u68c0\u67e5<br \/>\n  \u2192 \u7c7b\u578b\u68c0\u67e5<br \/>\n  \u2192 \u8d28\u91cf\u89c4\u5219<br \/>\n  \u2192 \u8f93\u51fa\u6982\u89c8\u62a5\u544a<br \/>\n  \u2192 \u8fdb\u5165\u6e05\u6d17\u6d41\u7a0b<\/p>\n<p>\u8fd9\u6837\u6bcf\u6b21\u6570\u636e\u66f4\u65b0\u540e\u90fd\u80fd\u5feb\u901f\u53d1\u73b0\u5f02\u5e38\u3002<\/p>\n<h4>4. \u6ce8\u610f\u6837\u672c\u504f\u5dee<\/h4>\n<p>\u5982\u679c\u6570\u636e\u6765\u81ea\u62bd\u6837\u3001\u7b5b\u9009\u6216\u67d0\u4e2a\u65f6\u95f4\u7a97\u53e3&#xff0c;\u6982\u89c8\u7ed3\u679c\u53ea\u4ee3\u8868\u5f53\u524d\u6837\u672c\u3002\u62a5\u544a\u4e2d\u5e94\u8bb0\u5f55\u6570\u636e\u8303\u56f4\u3001\u62bd\u6837\u65b9\u5f0f\u548c\u6570\u636e\u6765\u6e90\u3002<\/p>\n<h3>\u7ed3\u8bba<\/h3>\n<p>\u8ba4\u8bc6\u6570\u636e\u96c6\u662f\u6570\u636e\u5206\u6790\u7684\u7b2c\u4e00\u6b65\u3002\u901a\u8fc7 pandas \u7684 shape\u3001info\u3001dtypes\u3001isna\u3001describe\u3001value_counts\u3001nunique \u7b49\u65b9\u6cd5&#xff0c;\u53ef\u4ee5\u5feb\u901f\u5efa\u7acb\u6570\u636e\u753b\u50cf&#xff0c;\u53d1\u73b0\u7f3a\u5931\u3001\u91cd\u590d\u3001\u7c7b\u578b\u9519\u8bef\u548c\u5f02\u5e38\u5206\u5e03\u3002<\/p>\n<p>\u4e0b\u4e00\u7bc7\u5c06\u8fdb\u5165\u6570\u636e\u8bfb\u53d6\u5b9e\u8df5&#xff0c;\u7cfb\u7edf\u8bb2\u89e3 CSV\u3001Excel \u548c\u6570\u636e\u5e93\u6570\u636e\u5982\u4f55\u8bfb\u5165 pandas&#xff0c;\u5e76\u5904\u7406\u7f16\u7801\u3001\u65e5\u671f\u3001\u7c7b\u578b\u548c\u5927\u6587\u4ef6\u95ee\u9898\u3002<\/p>\n<h3>\u53c2\u8003\u8d44\u6599<\/h3>\n<li>pandas \u5b98\u65b9\u6587\u6863&#xff1a;https:\/\/pandas.pydata.org\/docs\/<\/li>\n<li>pandas DataFrame.info&#xff1a;https:\/\/pandas.pydata.org\/docs\/reference\/api\/pandas.DataFrame.info.html<\/li>\n<li>pandas DataFrame.describe&#xff1a;https:\/\/pandas.pydata.org\/docs\/reference\/api\/pandas.DataFrame.describe.html<\/li>\n","protected":false},"excerpt":{"rendered":"<p>\u6458\u8981<br 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