{"id":121086,"date":"2026-11-02T02:48:44","date_gmt":"2026-11-01T18:48:44","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/121086.html"},"modified":"2026-11-02T02:48:44","modified_gmt":"2026-11-01T18:48:44","slug":"python-%e6%95%b0%e6%8d%ae%e5%a4%84%e7%90%86%e8%bf%9b%e9%98%b6%ef%bc%88%e4%ba%8c%e5%8d%81%e4%b8%80%ef%bc%89%e7%9b%b8%e5%85%b3%e6%80%a7%e4%b8%8e%e5%88%86%e7%bb%84%e5%af%b9%e6%af%94%ef%bc%9a%e6%95%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/121086.html","title":{"rendered":"Python \u6570\u636e\u5904\u7406\u8fdb\u9636\uff08\u4e8c\u5341\u4e00\uff09\u76f8\u5173\u6027\u4e0e\u5206\u7ec4\u5bf9\u6bd4\uff1a\u6570\u636e\u91cc\u85cf\u7740\u4ec0\u4e48\u5173\u7cfb"},"content":{"rendered":"<h3>\u5199\u5728\u524d\u9762<\/h3>\n<p>\u4e0a\u4e00\u7bc7\u8bb2\u600e\u4e48\u4fdd\u8bc1\u6570\u636e\u5e72\u51c0&#xff0c;\u8fd9\u4e00\u7bc7\u8bb2\u5e72\u51c0\u4e4b\u540e\u600e\u4e48\u300c\u770b\u51fa\u4e1c\u897f\u300d\u3002<\/p>\n<p>\u6c47\u603b\u8868\u53ea\u56de\u7b54\u300c\u591a\u5c11\u300d&#xff0c;\u56de\u7b54\u4e0d\u4e86\u300c\u4e3a\u4ec0\u4e48\u300d\u548c\u300c\u4ec0\u4e48\u548c\u4ec0\u4e48\u6709\u5173\u300d\u3002\u800c\u5206\u6790\u62a5\u544a\u7684\u4ef7\u503c&#xff0c;\u5f80\u5f80\u5c31\u5728\u540e\u534a\u53e5&#xff1a;\u54ea\u4e9b\u6307\u6807\u540c\u5411\u53d8\u5316\u3001\u54ea\u7c7b\u7ec4\u5408\u8868\u73b0\u6700\u597d\u3001\u54ea\u4e2a\u7fa4\u4f53\u660e\u663e\u504f\u79bb\u3002<\/p>\n<p>\u8fd9\u7bc7\u7528\u56db\u4e2a\u5de5\u5177\u56de\u7b54\u4e09\u7c7b\u95ee\u9898&#xff1a;corr \u770b\u6570\u503c\u5173\u7cfb\u3001crosstab \u770b\u5206\u7c7b\u4ea4\u53c9\u3001groupby \u770b\u5206\u7ec4\u5dee\u5f02\u3001\u70ed\u529b\u56fe\u770b\u6574\u4f53\u683c\u5c40\u3002<\/p>\n<p>\u5148\u786e\u8ba4\u793a\u4f8b\u6570\u636e\u5728\u624b\u8fb9&#xff1a;<\/p>\n<p><span class=\"token keyword\">import<\/span> os<br \/>\n<span class=\"token keyword\">import<\/span> mkdata<\/p>\n<p><span class=\"token keyword\">if<\/span> <span class=\"token keyword\">not<\/span> os<span class=\"token punctuation\">.<\/span>path<span class=\"token punctuation\">.<\/span>exists<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;data\/sales.csv&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    mkdata<span class=\"token punctuation\">.<\/span>main<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;\u793a\u4f8b\u6570\u636e\u5c31\u7eea&#xff1a;&#034;<\/span><span class=\"token punctuation\">,<\/span> os<span class=\"token punctuation\">.<\/span>path<span class=\"token punctuation\">.<\/span>exists<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;data\/sales.csv&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8fd9\u6bb5\u4f1a\u68c0\u67e5\u7b2c 1 \u7bc7\u751f\u6210\u7684 data\/ \u76ee\u5f55\u5728\u4e0d\u5728&#xff0c;\u4e0d\u5728\u5c31\u81ea\u52a8\u8865\u4e00\u6b21&#xff1b;\u5df2\u7ecf\u6709\u6570\u636e\u65f6\u53ea\u4f1a\u6253\u5370\u4e00\u884c \u793a\u4f8b\u6570\u636e\u5c31\u7eea&#xff1a; True&#xff0c;\u4e0d\u5f71\u54cd\u540e\u9762\u7684\u7ed3\u679c\u3002<\/p>\n<h3>\u4e00\u3001corr&#xff1a;\u4e24\u4e2a\u6570\u503c\u5217\u662f\u540c\u5411\u8fd8\u662f\u53cd\u5411<\/h3>\n<p>corr() \u9ed8\u8ba4\u7b97 Pearson \u76f8\u5173\u7cfb\u6570&#xff0c;\u53d6\u503c \u22121 \u5230 1&#xff1a;\u63a5\u8fd1 1 \u540c\u5411\u3001\u63a5\u8fd1 \u22121 \u53cd\u5411\u3001\u63a5\u8fd1 0 \u6ca1\u5173\u7cfb\u3002<\/p>\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\/sales.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><\/p>\n<p><span class=\"token comment\"># \u53ea\u4fdd\u7559\u6570\u503c\u5217&#xff08;\u6587\u672c\u5217\u7b97\u4e0d\u4e86\u76f8\u5173&#xff09;<\/span><br \/>\nnum <span class=\"token operator\">&#061;<\/span> df<span class=\"token punctuation\">.<\/span>select_dtypes<span class=\"token punctuation\">(<\/span>include<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;number&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6570\u503c\u5217&#xff1a;&#034;<\/span><span class=\"token punctuation\">,<\/span> num<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><span class=\"token string\">&#034;&#8212;-&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Pearson \u76f8\u5173\u7cfb\u6570&#xff1a;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>num<span class=\"token punctuation\">.<\/span>corr<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\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>to_string<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;&#8212;-&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Spearman&#xff08;\u79e9\u76f8\u5173&#xff0c;\u6297\u6781\u7aef\u503c&#xff09;&#xff1a;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>num<span class=\"token punctuation\">.<\/span>corr<span class=\"token punctuation\">(<\/span>method<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;spearman&#034;<\/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\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>to_string<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u6570\u503c\u5217&#xff1a; [&#039;\u6570\u91cf&#039;, &#039;\u5355\u4ef7&#039;, &#039;\u91d1\u989d&#039;]<br \/>\n&#8212;-<br \/>\nPearson \u76f8\u5173\u7cfb\u6570&#xff1a;<br \/>\n       \u6570\u91cf     \u5355\u4ef7     \u91d1\u989d<br \/>\n\u6570\u91cf  1.000 -0.039  0.245<br \/>\n\u5355\u4ef7 -0.039  1.000  0.448<br \/>\n\u91d1\u989d  0.245  0.448  1.000<br \/>\n&#8212;-<br \/>\nSpearman&#xff08;\u79e9\u76f8\u5173&#xff0c;\u6297\u6781\u7aef\u503c&#xff09;&#xff1a;<br \/>\n       \u6570\u91cf    \u5355\u4ef7     \u91d1\u989d<br \/>\n\u6570\u91cf  1.000 -0.06  0.495<br \/>\n\u5355\u4ef7 -0.060  1.00  0.420<br \/>\n\u91d1\u989d  0.495  0.42  1.000<\/p>\n<p>\u4e24\u4e2a\u53c2\u6570\u8981\u4f1a\u7528&#xff1a;<\/p>\n<ul>\n<li>method&#061;&#034;spearman&#034;&#xff1a;\u6309\u6392\u540d\u7b97\u76f8\u5173&#xff0c;\u4e0d\u53d7\u6781\u7aef\u503c\u5f71\u54cd\u3002\u6570\u636e\u91cc\u6709 -599 \u8fd9\u79cd\u810f\u503c\u65f6&#xff0c;Spearman \u6bd4 Pearson \u7a33&#xff1b;<\/li>\n<li>min_periods&#xff1a;\u53c2\u4e0e\u8ba1\u7b97\u7684\u6700\u5c0f\u6837\u672c\u6570&#xff0c;\u5c0f\u6837\u672c\u522b\u786c\u7b97\u3002<\/li>\n<\/ul>\n<p>corrwith \u66f4\u7701\u4e8b\u2014\u2014\u4e00\u5f20\u8868\u5bf9\u53e6\u4e00\u5217\u7b97\u76f8\u5173&#xff1a;<\/p>\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\/sales.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 \/>\nnum <span class=\"token operator\">&#061;<\/span> df<span class=\"token punctuation\">.<\/span>select_dtypes<span class=\"token punctuation\">(<\/span>include<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;number&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5404\u5217\u4e0e\u91d1\u989d\u7684\u76f8\u5173\u6027&#xff1a;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>num<span class=\"token punctuation\">.<\/span>corrwith<span class=\"token punctuation\">(<\/span>num<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><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\">3<\/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><span class=\"token punctuation\">.<\/span>to_string<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5404\u5217\u4e0e\u91d1\u989d\u7684\u76f8\u5173\u6027&#xff1a;<br \/>\n\u91d1\u989d    1.000<br \/>\n\u5355\u4ef7    0.448<br \/>\n\u6570\u91cf    0.245<\/p>\n<h3>\u4e8c\u3001crosstab&#xff1a;\u5206\u7c7b\u5b57\u6bb5\u7684\u4ea4\u53c9\u8868<\/h3>\n<p>\u4e24\u5f20\u5206\u7c7b\u8868\u4ea4\u53c9&#xff0c;\u770b\u7ec4\u5408\u5206\u5e03&#xff0c;crosstab \u6bd4 groupby \u66f4\u76f4\u89c2\u3002<\/p>\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\/sales.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><\/p>\n<p><span class=\"token comment\"># \u57ce\u5e02 \u00d7 \u4ea7\u54c1&#xff1a;\u6bcf\u4e2a\u7ec4\u5408\u6709\u591a\u5c11\u5355<\/span><br \/>\nct <span class=\"token operator\">&#061;<\/span> pd<span class=\"token punctuation\">.<\/span>crosstab<span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u57ce\u5e02&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u4ea7\u54c1&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> margins<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">,<\/span> margins_name<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;\u5408\u8ba1&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u8ba2\u5355\u6570\u4ea4\u53c9\u8868&#xff1a;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>ct<span class=\"token punctuation\">.<\/span>to_string<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;&#8212;-&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token comment\"># normalize&#061;&#034;index&#034;&#xff1a;\u6bcf\u884c\u5f52\u4e00\u5316&#xff0c;\u770b\u6bcf\u4e2a\u57ce\u5e02\u5185\u90e8\u7684\u4ea7\u54c1\u7ed3\u6784<\/span><br \/>\nct_pct <span class=\"token operator\">&#061;<\/span> pd<span class=\"token punctuation\">.<\/span>crosstab<span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u57ce\u5e02&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u4ea7\u54c1&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> normalize<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;index&#034;<\/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\">3<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6309\u57ce\u5e02\u770b\u4ea7\u54c1\u7ed3\u6784&#xff08;\u884c\u5360\u6bd4&#xff09;&#xff1a;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>ct_pct<span class=\"token punctuation\">.<\/span>to_string<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8ba2\u5355\u6570\u4ea4\u53c9\u8868&#xff1a;<br \/>\n\u4ea7\u54c1  A-\u7b14\u8bb0\u672c  B-\u9f20\u6807  C-\u952e\u76d8  D-\u663e\u793a\u5668  \u5408\u8ba1<br \/>\n\u57ce\u5e02<br \/>\n\u4e0a\u6d77      0     2     2      0   4<br \/>\n\u5317\u4eac      1     0     1      1   3<br \/>\n\u5e7f\u5dde      0     2     1      0   3<br \/>\n\u676d\u5dde      2     1     0      2   5<br \/>\n\u5408\u8ba1      3     5     4      3  15<br \/>\n&#8212;-<br \/>\n\u6309\u57ce\u5e02\u770b\u4ea7\u54c1\u7ed3\u6784&#xff08;\u884c\u5360\u6bd4&#xff09;&#xff1a;<br \/>\n\u4ea7\u54c1  A-\u7b14\u8bb0\u672c   B-\u9f20\u6807   C-\u952e\u76d8  D-\u663e\u793a\u5668<br \/>\n\u57ce\u5e02<br \/>\n\u4e0a\u6d77  0.000  0.500  0.500  0.000<br \/>\n\u5317\u4eac  0.333  0.000  0.333  0.333<br \/>\n\u5e7f\u5dde  0.000  0.667  0.333  0.000<br \/>\n\u676d\u5dde  0.400  0.200  0.000  0.400<\/p>\n<p>normalize \u7684\u4e09\u4e2a\u53d6\u503c\u5f88\u597d\u8bb0&#xff1a;&#034;index&#034; \u6309\u884c\u3001&#034;columns&#034; \u6309\u5217\u3001&#034;all&#034; \u6309\u5168\u8868\u3002\u5206\u6790\u7ed3\u6784\u5dee\u5f02\u65f6\u7528 index&#xff0c;\u6bd4\u8f83\u4e0d\u540c\u57ce\u5e02\u7684\u504f\u597d\u6b63\u5408\u9002\u3002<\/p>\n<h3>\u4e09\u3001groupby \u5206\u7ec4\u5bf9\u6bd4&#xff1a;\u628a\u300c\u5dee\u5f02\u300d\u91cf\u5316<\/h3>\n<p>\u5206\u7ec4\u5bf9\u6bd4\u7684\u5173\u952e\u4e0d\u662f\u7b97\u5747\u503c&#xff0c;\u800c\u662f\u540c\u65f6\u7ed9\u51e0\u4e2a\u6307\u6807 &#043; \u6392\u5e8f &#043; \u7b97\u5360\u6bd4&#xff0c;\u8ba9\u5dee\u5f02\u4e00\u773c\u53ef\u89c1\u3002<\/p>\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\/sales.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 \/>\ndf<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>fillna<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u6570\u91cf&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">*<\/span> df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u5355\u4ef7&#034;<\/span><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\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\nclean <span class=\"token operator\">&#061;<\/span> df<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>drop_duplicates<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>g <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><br \/>\n    clean<span class=\"token punctuation\">.<\/span>groupby<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u57ce\u5e02&#034;<\/span><span class=\"token punctuation\">,<\/span> dropna<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span>agg<span class=\"token punctuation\">(<\/span>\u8ba2\u5355\u6570<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;size&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> \u9500\u91cf<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6570\u91cf&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;sum&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n         \u9500\u552e\u989d<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;sum&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> \u5ba2\u5355\u4ef7<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;mean&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token builtin\">round<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><br \/>\ng<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u9500\u552e\u989d\u5360\u6bd4&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>g<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u9500\u552e\u989d&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">\/<\/span> g<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u9500\u552e\u989d&#034;<\/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 operator\">*<\/span> <span class=\"token number\">100<\/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\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\ng <span class=\"token operator\">&#061;<\/span> g<span class=\"token punctuation\">.<\/span>sort_values<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u9500\u552e\u989d&#034;<\/span><span class=\"token punctuation\">,<\/span> ascending<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>g<span class=\"token punctuation\">.<\/span>to_string<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;&#8212;-&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6700\u9ad8\u4e0e\u6700\u4f4e\u57ce\u5e02\u9500\u552e\u989d\u5dee&#xff1a;&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">round<\/span><span class=\"token punctuation\">(<\/span>g<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u9500\u552e\u989d&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">max<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span> g<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u9500\u552e\u989d&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">min<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u5143&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>     \u8ba2\u5355\u6570  \u9500\u91cf     \u9500\u552e\u989d     \u5ba2\u5355\u4ef7  \u9500\u552e\u989d\u5360\u6bd4<br \/>\n\u57ce\u5e02<br \/>\n\u676d\u5dde     4  14  3404.1  851.02   54.1<br \/>\n\u5317\u4eac     3   5  1425.9  475.30   22.7<br \/>\n\u4e0a\u6d77     2  12   772.5  386.25   12.3<br \/>\n\u5e7f\u5dde     2  10   535.4  267.70    8.5<br \/>\nNaN    1   3   149.7  149.70    2.4<br \/>\n&#8212;-<br \/>\n\u6700\u9ad8\u4e0e\u6700\u4f4e\u57ce\u5e02\u9500\u552e\u989d\u5dee&#xff1a; 3254.4 \u5143<\/p>\n<p>\u4e00\u4e2a\u5b9e\u7528\u4e60\u60ef&#xff1a;\u5206\u7ec4\u7ed3\u679c\u4e00\u5b9a\u52a0\u5360\u6bd4\u5217\u3002\u300c\u676d\u5dde 6399 \u5143\u300d\u6ca1\u4eba\u6709\u611f\u89c9&#xff0c;\u300c\u676d\u5dde\u5360 67.6%\u300d\u7acb\u523b\u5c31\u6709\u7ed3\u8bba\u4e86\u3002<\/p>\n<h3>\u56db\u3001pd.cut \u5206\u6bb5\u5bf9\u6bd4&#xff1a;\u8fde\u7eed\u53d8\u91cf\u600e\u4e48\u5206\u7ec4<\/h3>\n<p>\u91d1\u989d\u3001\u5e74\u9f84\u3001\u65f6\u957f\u8fd9\u7c7b\u8fde\u7eed\u503c&#xff0c;\u5148\u5206\u6bb5\u518d\u5bf9\u6bd4&#xff0c;\u6bd4\u76f4\u63a5\u770b\u539f\u59cb\u503c\u6709\u6d1e\u5bdf\u3002<\/p>\n<p><span class=\"token keyword\">import<\/span> numpy <span class=\"token keyword\">as<\/span> np<br \/>\n<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\/sales.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 \/>\ndf<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>fillna<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u6570\u91cf&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">*<\/span> df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u5355\u4ef7&#034;<\/span><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\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\nclean <span class=\"token operator\">&#061;<\/span> df<span class=\"token punctuation\">[<\/span>df<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>drop_duplicates<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>clean<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u4ef7\u683c\u6bb5&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> pd<span class=\"token punctuation\">.<\/span>cut<span class=\"token punctuation\">(<\/span><br \/>\n    clean<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u5355\u4ef7&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> bins<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">50<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">600<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> labels<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u4f4e\u4ef7(&lt;50)&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u4e2d\u4ef7(50-100)&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u9ad8\u4ef7(&gt;100)&#034;<\/span><span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><br \/>\nseg <span class=\"token operator\">&#061;<\/span> clean<span class=\"token punctuation\">.<\/span>groupby<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u4ef7\u683c\u6bb5&#034;<\/span><span class=\"token punctuation\">,<\/span> observed<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>agg<span class=\"token punctuation\">(<\/span><br \/>\n    \u8ba2\u5355\u6570<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;size&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> \u9500\u552e\u989d<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;sum&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> \u5ba2\u5355\u4ef7<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u91d1\u989d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;mean&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<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\">2<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>seg<span class=\"token punctuation\">.<\/span>to_string<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;&#8212;-&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5404\u4ef7\u683c\u6bb5\u8ba2\u5355\u5360\u6bd4&#xff1a;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>clean<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;\u4ef7\u683c\u6bb5&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>value_counts<span class=\"token punctuation\">(<\/span>normalize<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>sort_index<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">100<\/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\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>to_string<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>            \u8ba2\u5355\u6570     \u9500\u552e\u989d      \u5ba2\u5355\u4ef7<br \/>\n\u4ef7\u683c\u6bb5<br \/>\n\u4f4e\u4ef7(&lt;50)       7   937.6   133.94<br \/>\n\u4e2d\u4ef7(50-100)    3  1157.0   385.67<br \/>\n\u9ad8\u4ef7(&gt;100)      2  4193.0  2096.50<br \/>\n&#8212;-<br \/>\n\u5404\u4ef7\u683c\u6bb5\u8ba2\u5355\u5360\u6bd4&#xff1a;<br \/>\n\u4ef7\u683c\u6bb5<br \/>\n\u4f4e\u4ef7(&lt;50)       58.3<br \/>\n\u4e2d\u4ef7(50-100)    25.0<br \/>\n\u9ad8\u4ef7(&gt;100)      16.7<\/p>\n<p>pd.cut \u662f\u6309\u4f60\u7ed9\u7684\u8fb9\u754c\u5207&#xff08;\u4e1a\u52a1\u542b\u4e49\u660e\u786e&#xff09;&#xff1b;pd.qcut \u662f\u6309\u5206\u4f4d\u6570\u5207&#xff08;\u6bcf\u6bb5\u6837\u672c\u6570\u5c3d\u91cf\u76f8\u7b49&#xff09;\u3002\u524d\u8005\u9002\u5408\u6c47\u62a5&#xff0c;\u540e\u8005\u9002\u5408\u5efa\u6a21\u3002<\/p>\n<h3>\u4e94\u3001\u753b\u51fa\u6765&#xff1a;\u76f8\u5173\u7cfb\u6570\u70ed\u529b\u56fe<\/h3>\n<p>\u6570\u5b57\u770b\u7740\u4e0d\u76f4\u89c2&#xff0c;\u753b\u6210\u70ed\u529b\u56fe&#xff0c;\u54ea\u91cc\u5f3a\u54ea\u91cc\u5f31\u4e00\u773c\u5c31\u6709\u611f\u89c9\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261101184843-6ae7898b572d4.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u56fe 1&#xff1a;\u76f8\u5173\u7cfb\u6570\u70ed\u529b\u56fe\u3002\u6570\u91cf\u4e0e\u91d1\u989d 0.24\u3001\u5355\u4ef7\u4e0e\u91d1\u989d 0.45\u2014\u2014\u90fd\u4e0d\u7b97\u5f3a&#xff0c;\u8bf4\u660e\u9500\u552e\u989d\u66f4\u591a\u7531\u300c\u5355\u4ef7\u9ad8\u300d\u800c\u4e0d\u662f\u300c\u4e70\u5f97\u591a\u300d\u9a71\u52a8\u3002<\/p>\n<p><span class=\"token keyword\">import<\/span> os<\/p>\n<p><span class=\"token keyword\">import<\/span> matplotlib<\/p>\n<p>matplotlib<span class=\"token punctuation\">.<\/span>use<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Agg&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">import<\/span> matplotlib<span class=\"token punctuation\">.<\/span>pyplot <span class=\"token keyword\">as<\/span> plt<br \/>\n<span class=\"token keyword\">import<\/span> numpy <span class=\"token keyword\">as<\/span> np<br \/>\n<span class=\"token keyword\">import<\/span> pandas <span class=\"token keyword\">as<\/span> pd<\/p>\n<p>plt<span class=\"token punctuation\">.<\/span>rcParams<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;font.sans-serif&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;SimHei&#034;<\/span><span class=\"token punctuation\">]<\/span><br \/>\nplt<span class=\"token punctuation\">.<\/span>rcParams<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;axes.unicode_minus&#034;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">False<\/span><\/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\/sales.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 \/>\nnum <span class=\"token operator\">&#061;<\/span> df<span class=\"token punctuation\">.<\/span>select_dtypes<span class=\"token punctuation\">(<\/span>include<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;number&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\ncorr <span class=\"token operator\">&#061;<\/span> num<span class=\"token punctuation\">.<\/span>corr<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\">2<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>fig<span class=\"token punctuation\">,<\/span> ax <span class=\"token operator\">&#061;<\/span> plt<span class=\"token punctuation\">.<\/span>subplots<span class=\"token punctuation\">(<\/span>figsize<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">6.2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\nim <span class=\"token operator\">&#061;<\/span> ax<span class=\"token punctuation\">.<\/span>imshow<span class=\"token punctuation\">(<\/span>corr<span class=\"token punctuation\">,<\/span> cmap<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;RdBu_r&#034;<\/span><span class=\"token punctuation\">,<\/span> vmin<span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> vmax<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\nax<span class=\"token punctuation\">.<\/span>set_xticks<span class=\"token punctuation\">(<\/span><span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>corr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\nax<span class=\"token punctuation\">.<\/span>set_yticks<span class=\"token punctuation\">(<\/span><span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>corr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\nax<span class=\"token punctuation\">.<\/span>set_xticklabels<span class=\"token punctuation\">(<\/span>corr<span class=\"token punctuation\">.<\/span>columns<span class=\"token punctuation\">,<\/span> rotation<span class=\"token operator\">&#061;<\/span><span class=\"token number\">30<\/span><span class=\"token punctuation\">)<\/span><br \/>\nax<span class=\"token punctuation\">.<\/span>set_yticklabels<span class=\"token punctuation\">(<\/span>corr<span class=\"token punctuation\">.<\/span>index<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">for<\/span> i <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>corr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> j <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>corr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        v <span class=\"token operator\">&#061;<\/span> corr<span class=\"token punctuation\">.<\/span>iloc<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">,<\/span> j<span class=\"token punctuation\">]<\/span><br \/>\n        ax<span class=\"token punctuation\">.<\/span>text<span class=\"token punctuation\">(<\/span>j<span class=\"token punctuation\">,<\/span> i<span class=\"token punctuation\">,<\/span> <span class=\"token string-interpolation\"><span class=\"token string\">f&#034;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>v<span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.2f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">,<\/span> ha<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;center&#034;<\/span><span class=\"token punctuation\">,<\/span> va<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;center&#034;<\/span><span class=\"token punctuation\">,<\/span> fontsize<span class=\"token operator\">&#061;<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                color<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;white&#034;<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token builtin\">abs<\/span><span class=\"token punctuation\">(<\/span>v<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0.6<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token string\">&#034;#1f2937&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\nax<span class=\"token punctuation\">.<\/span>set_title<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u6570\u503c\u5217\u76f8\u5173\u7cfb\u6570\u70ed\u529b\u56fe&#034;<\/span><span class=\"token punctuation\">,<\/span> fontsize<span class=\"token operator\">&#061;<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">,<\/span> pad<span class=\"token operator\">&#061;<\/span><span class=\"token number\">12<\/span><span class=\"token punctuation\">)<\/span><br \/>\nfig<span class=\"token punctuation\">.<\/span>colorbar<span class=\"token punctuation\">(<\/span>im<span class=\"token punctuation\">,<\/span> ax<span class=\"token operator\">&#061;<\/span>ax<span class=\"token punctuation\">,<\/span> shrink<span class=\"token operator\">&#061;<\/span><span class=\"token number\">0.85<\/span><span class=\"token punctuation\">,<\/span> label<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;Pearson \u76f8\u5173\u7cfb\u6570&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\nfig<span class=\"token punctuation\">.<\/span>tight_layout<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\nos<span class=\"token punctuation\">.<\/span>makedirs<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;output&#034;<\/span><span class=\"token punctuation\">,<\/span> exist_ok<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><br \/>\nfig<span class=\"token punctuation\">.<\/span>savefig<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;output\/corr_heatmap.png&#034;<\/span><span class=\"token punctuation\">,<\/span> dpi<span class=\"token operator\">&#061;<\/span><span class=\"token number\">200<\/span><span class=\"token punctuation\">)<\/span><br \/>\nplt<span class=\"token punctuation\">.<\/span>close<span class=\"token punctuation\">(<\/span>fig<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u5df2\u4fdd\u5b58 output\/corr_heatmap.png&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u76f8\u5173\u7cfb\u6570\u6700\u5927\u7684\u4e00\u5bf9&#xff1a;&#034;<\/span><span class=\"token punctuation\">,<\/span> corr<span class=\"token punctuation\">.<\/span>where<span class=\"token punctuation\">(<\/span><span class=\"token operator\">~<\/span>np<span class=\"token punctuation\">.<\/span>eye<span class=\"token punctuation\">(<\/span><span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>corr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> dtype<span class=\"token operator\">&#061;<\/span><span class=\"token builtin\">bool<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>stack<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>idxmax<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5df2\u4fdd\u5b58 output\/corr_heatmap.png<br \/>\n\u76f8\u5173\u7cfb\u6570\u6700\u5927\u7684\u4e00\u5bf9&#xff1a; (&#039;\u5355\u4ef7&#039;, &#039;\u91d1\u989d&#039;)<\/p>\n<h3>\u516d\u3001\u76f8\u5173\u4e0d\u7b49\u4e8e\u56e0\u679c&#xff1a;\u4e00\u4e2a\u53cd\u4f8b<\/h3>\n<p>\u5047\u8bbe\u4f60\u53d1\u73b0\u300c\u51b0\u6dc7\u6dcb\u9500\u91cf\u300d\u548c\u300c\u6eba\u6c34\u4eba\u6570\u300d\u5f3a\u76f8\u5173&#xff08;r\u22480.9&#xff09;\u3002\u7ed3\u8bba\u4e0d\u662f\u300c\u5403\u51b0\u6dc7\u6dcb\u5bfc\u81f4\u6eba\u6c34\u300d&#xff0c;\u800c\u662f\u4e24\u8005\u90fd\u53d7\u7b2c\u4e09\u4e2a\u56e0\u7d20\u2014\u2014\u6c14\u6e29\u5f71\u54cd\u3002<\/p>\n<p>\u5206\u6790\u62a5\u544a\u91cc\u6700\u5bb9\u6613\u7ffb\u8f66\u7684\u5c31\u662f\u8fd9\u4e00\u53e5\u3002\u4e09\u4e2a\u81ea\u68c0\u95ee\u9898&#xff1a;<\/p>\n<li>\u6709\u6ca1\u6709\u7b2c\u4e09\u4e2a\u53d8\u91cf\u540c\u65f6\u5f71\u54cd\u4e24\u8005&#xff08;\u6df7\u6dc6\u53d8\u91cf&#xff09;&#xff1f;<\/li>\n<li>\u56e0\u679c\u5173\u7cfb\u65b9\u5411\u5bf9\u5417&#xff08;A \u5bfc\u81f4 B&#xff0c;\u8fd8\u662f B \u5bfc\u81f4 A&#xff09;&#xff1f;<\/li>\n<li>\u6837\u672c\u91cf\u591f\u5417&#xff1f;\u5c0f\u6837\u672c\u7684\u9ad8\u76f8\u5173\u5f88\u5bb9\u6613\u662f\u5de7\u5408\u3002<\/li>\n<h3>\u5e38\u89c1\u95ee\u9898<\/h3>\n<p>Q1&#xff1a;corr() \u62a5 could not convert string to float\u3002<\/p>\n<p>\u8868\u91cc\u6709\u6587\u672c\u5217\u3002\u5148 df.select_dtypes(include&#061;&#034;number&#034;) \u8fc7\u6ee4&#xff1b;\u5982\u679c\u67d0\u4e2a\u300c\u6570\u5b57\u5217\u300d\u5176\u5b9e\u662f\u6587\u672c&#xff08;\u5e26\u5355\u4f4d\u3001\u7a7a\u683c&#xff09;&#xff0c;\u5148 pd.to_numeric(errors&#061;&#034;coerce&#034;)\u3002<\/p>\n<p>Q2&#xff1a;crosstab \u7ed3\u679c\u91cc\u5c11\u4e86 NaN \u90a3\u4e00\u884c\u3002<\/p>\n<p>crosstab \u9ed8\u8ba4\u4e22\u5f03\u7f3a\u5931\u3002\u60f3\u4fdd\u7559&#xff1a;pd.crosstab(df[&#034;\u57ce\u5e02&#034;].fillna(&#034;\u672a\u77e5&#034;), df[&#034;\u4ea7\u54c1&#034;], dropna&#061;False)\u3002<\/p>\n<p>Q3&#xff1a;\u70ed\u529b\u56fe\u4e0a\u4e2d\u6587\u5168\u662f\u65b9\u5757\u3002<\/p>\n<p>\u6ca1\u8bbe\u4e2d\u6587\u5b57\u4f53\u3002plt.rcParams[&#034;font.sans-serif&#034;] &#061; [&#034;SimHei&#034;]&#xff0c;Mac \u6362 PingFang SC&#xff0c;\u5e76\u4e14\u8981\u5199\u5728\u753b\u56fe\u4e4b\u524d\u2014\u2014\u8fd9\u548c\u7b2c 11 \u7bc7\u662f\u540c\u4e00\u4e2a\u5751\u3002<\/p>\n<h3>\u5c0f\u7ed3<\/h3>\n<p>\u8fd9\u4e00\u7bc7\u7684\u56db\u4e2a\u5de5\u5177\u5404\u7ba1\u4e00\u6bb5&#xff1a;corr \u7ba1\u6570\u503c\u5173\u7cfb\u3001crosstab \u7ba1\u5206\u7c7b\u4ea4\u53c9\u3001groupby &#043; \u5360\u6bd4 \u7ba1\u5206\u7ec4\u5dee\u5f02\u3001pd.cut \u7ba1\u8fde\u7eed\u503c\u5206\u6bb5\u3002\u628a\u5b83\u4eec\u7ec4\u5408\u8d77\u6765&#xff0c;\u4e00\u5f20\u8868\u5c31\u80fd\u56de\u7b54\u300c\u8c01\u548c\u8c01\u6709\u5173\u3001\u54ea\u7c7b\u6700\u597d\u3001\u5dee\u591a\u5c11\u300d\u3002\u4f46\u7ed3\u8bba\u51fa\u53e3\u524d\u4e00\u5b9a\u8981\u8fc7\u4e00\u904d\u300c\u76f8\u5173\u4e0d\u7b49\u4e8e\u56e0\u679c\u300d\u7684\u4e09\u95ee\u2014\u2014\u8fd9\u6bd4\u4efb\u4f55\u4ee3\u7801\u90fd\u91cd\u8981\u3002<\/p>\n<p>\u4e0b\u4e00\u7bc7\u8fdb\u5165\u7b2c\u4e8c\u6279\u7684\u5b9e\u6218\u7bc7&#xff1a;\u7528\u4e00\u4efd\u6a21\u62df\u6570\u636e&#xff0c;\u628a\u7528\u6237\u884c\u4e3a\u5206\u6790\u4ece\u6307\u6807\u5b9a\u4e49\u505a\u5230\u7ed3\u8bba\u8f93\u51fa\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5199\u5728\u524d\u9762<br \/>\n\u4e0a\u4e00\u7bc7\u8bb2\u600e\u4e48\u4fdd\u8bc1\u6570\u636e\u5e72\u51c0&#xff0c;\u8fd9\u4e00\u7bc7\u8bb2\u5e72\u51c0\u4e4b\u540e\u600e\u4e48\u300c\u770b\u51fa\u4e1c\u897f\u300d\u3002<br \/>\n\u6c47\u603b\u8868\u53ea\u56de\u7b54\u300c\u591a\u5c11\u300d&#xff0c;\u56de\u7b54\u4e0d\u4e86\u300c\u4e3a\u4ec0\u4e48\u300d\u548c\u300c\u4ec0\u4e48\u548c\u4ec0\u4e48\u6709\u5173\u300d\u3002\u800c\u5206\u6790\u62a5\u544a\u7684\u4ef7\u503c&#xff0c;\u5f80\u5f80\u5c31\u5728\u540e\u534a\u53e5&#xff1a;\u54ea\u4e9b\u6307\u6807\u540c\u5411\u53d8\u5316\u3001\u54ea\u7c7b\u7ec4\u5408\u8868\u73b0\u6700\u597d\u3001\u54ea\u4e2a\u7fa4\u4f53\u660e\u663e\u504f\u79bb\u3002<br \/>\n\u8fd9\u7bc7\u7528\u56db\u4e2a\u5de5\u5177\u56de\u7b54\u4e09\u7c7b\u95ee\u9898&#xff1a;corr \u770b\u6570\u503c\u5173\u7cfb\u3001crosstab \u770b\u5206\u7c7b\u4ea4\u53c9\u3001groupby \u770b\u5206\u7ec4\u5dee\u5f02\u3001\u70ed\u529b\u56fe\u770b\u6574\u4f53\u683c\u5c40\u3002<br \/>\n\u5148\u786e\u8ba4\u793a\u4f8b\u6570\u636e\u5728\u624b\u8fb9&#xff1a;<br \/>\nimport os<\/p>\n","protected":false},"author":2,"featured_media":121085,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[11820,4278,81,50,323,801],"topic":[],"class_list":["post-121086","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-atomgit","tag-pandas","tag-python","tag-50","tag-323","tag-801"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python \u6570\u636e\u5904\u7406\u8fdb\u9636\uff08\u4e8c\u5341\u4e00\uff09\u76f8\u5173\u6027\u4e0e\u5206\u7ec4\u5bf9\u6bd4\uff1a\u6570\u636e\u91cc\u85cf\u7740\u4ec0\u4e48\u5173\u7cfb - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/121086.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python \u6570\u636e\u5904\u7406\u8fdb\u9636\uff08\u4e8c\u5341\u4e00\uff09\u76f8\u5173\u6027\u4e0e\u5206\u7ec4\u5bf9\u6bd4\uff1a\u6570\u636e\u91cc\u85cf\u7740\u4ec0\u4e48\u5173\u7cfb - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u5199\u5728\u524d\u9762 \u4e0a\u4e00\u7bc7\u8bb2\u600e\u4e48\u4fdd\u8bc1\u6570\u636e\u5e72\u51c0&#xff0c;\u8fd9\u4e00\u7bc7\u8bb2\u5e72\u51c0\u4e4b\u540e\u600e\u4e48\u300c\u770b\u51fa\u4e1c\u897f\u300d\u3002 \u6c47\u603b\u8868\u53ea\u56de\u7b54\u300c\u591a\u5c11\u300d&#xff0c;\u56de\u7b54\u4e0d\u4e86\u300c\u4e3a\u4ec0\u4e48\u300d\u548c\u300c\u4ec0\u4e48\u548c\u4ec0\u4e48\u6709\u5173\u300d\u3002\u800c\u5206\u6790\u62a5\u544a\u7684\u4ef7\u503c&#xff0c;\u5f80\u5f80\u5c31\u5728\u540e\u534a\u53e5&#xff1a;\u54ea\u4e9b\u6307\u6807\u540c\u5411\u53d8\u5316\u3001\u54ea\u7c7b\u7ec4\u5408\u8868\u73b0\u6700\u597d\u3001\u54ea\u4e2a\u7fa4\u4f53\u660e\u663e\u504f\u79bb\u3002 \u8fd9\u7bc7\u7528\u56db\u4e2a\u5de5\u5177\u56de\u7b54\u4e09\u7c7b\u95ee\u9898&#xff1a;corr \u770b\u6570\u503c\u5173\u7cfb\u3001crosstab \u770b\u5206\u7c7b\u4ea4\u53c9\u3001groupby \u770b\u5206\u7ec4\u5dee\u5f02\u3001\u70ed\u529b\u56fe\u770b\u6574\u4f53\u683c\u5c40\u3002 \u5148\u786e\u8ba4\u793a\u4f8b\u6570\u636e\u5728\u624b\u8fb9&#xff1a; import os\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/121086.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" 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