{"id":1011138,"date":"2024-12-27T11:27:19","date_gmt":"2024-12-27T03:27:19","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1011138.html"},"modified":"2024-12-27T11:27:21","modified_gmt":"2024-12-27T03:27:21","slug":"python%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8b%e5%88%97%e8%a1%a8%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1011138.html","title":{"rendered":"python\u5982\u4f55\u67e5\u770b\u5217\u8868\u5143\u7d20"},"content":{"rendered":"

\"python\u5982\u4f55\u67e5\u770b\u5217\u8868\u5143\u7d20\"<\/p>\n

\u5728Python\u4e2d\u67e5\u770b\u5217\u8868\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u201c\u7d22\u5f15\u8bbf\u95ee\u3001\u5207\u7247\u64cd\u4f5c\u3001\u904d\u5386\u5217\u8868\u3001\u5217\u8868\u65b9\u6cd5\u201d\u6765\u5b9e\u73b0<\/strong>\u3002\u5176\u4e2d\uff0c\u7d22\u5f15\u8bbf\u95ee\u662f\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u5217\u8868\u5143\u7d20\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u7d22\u5f15\u662f\u4ece0\u5f00\u59cb\u7684\u3002\u5728\u5217\u8868\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u65b9\u62ec\u53f7\u52a0\u4e0a\u7d22\u5f15\u503c\u6765\u83b7\u53d6\u5143\u7d20\u3002\u4f8b\u5982\uff0cmy_list[0]<\/code>\u53ef\u4ee5\u83b7\u53d6\u5217\u8868\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002\u540c\u65f6\uff0cPython\u652f\u6301\u8d1f\u7d22\u5f15\uff0cmy_list[-1]<\/code>\u53ef\u4ee5\u83b7\u53d6\u5217\u8868\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u3002\u63a5\u4e0b\u6765\uff0c\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u53ca\u5176\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u7d22\u5f15\u8bbf\u95ee<\/p>\n<\/p>\n

\u7d22\u5f15\u8bbf\u95ee\u662f\u67e5\u770b\u5217\u8868\u4e2d\u7279\u5b9a\u5143\u7d20\u7684\u57fa\u672c\u65b9\u6cd5\u3002\u901a\u8fc7\u7d22\u5f15\uff0c\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95ee\u5217\u8868\u4e2d\u7684\u67d0\u4e2a\u5143\u7d20\u3002Python\u5217\u8868\u652f\u6301\u6b63\u7d22\u5f15\u548c\u8d1f\u7d22\u5f15\u3002<\/p>\n<\/p>\n

    \n
  1. \u6b63\u7d22\u5f15<\/li>\n<\/ol>\n

    \u6b63\u7d22\u5f15\u4ece0\u5f00\u59cb\uff0c\u4f9d\u6b21\u9012\u589e\u3002\u4f8b\u5982\uff0c\u6709\u4e00\u4e2a\u5217\u8868my_list = [10, 20, 30, 40, 50]<\/code>\uff0c\u8981\u8bbf\u95ee\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f150\uff0c\u5373my_list[0]<\/code>\uff0c\u8fd4\u56de\u7ed3\u679c\u4e3a10\u3002\u8981\u8bbf\u95ee\u7b2c\u4e09\u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528my_list[2]<\/code>\uff0c\u8fd4\u56de\u7ed3\u679c\u4e3a30\u3002<\/p>\n<\/p>\n

      \n
    1. \u8d1f\u7d22\u5f15<\/li>\n<\/ol>\n

      \u8d1f\u7d22\u5f15\u4ece-1\u5f00\u59cb\uff0c\u8868\u793a\u4ece\u5217\u8868\u7684\u672b\u5c3e\u5f00\u59cb\u8ba1\u6570\u3002\u4f8b\u5982\uff0cmy_list[-1]<\/code>\u8fd4\u56de\u5217\u8868\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d2050\uff0cmy_list[-3]<\/code>\u8fd4\u56de30\u3002<\/p>\n<\/p>\n

      \u7d22\u5f15\u8bbf\u95ee\u7684\u4f18\u52bf\u5728\u4e8e\u5feb\u901f\u76f4\u63a5\uff0c\u9002\u7528\u4e8e\u9700\u8981\u8bbf\u95ee\u5355\u4e2a\u5143\u7d20\u7684\u573a\u666f\u3002\u7136\u800c\uff0c\u7d22\u5f15\u8d85\u51fa\u8303\u56f4\u4f1a\u5bfc\u81f4IndexError<\/code>\uff0c\u56e0\u6b64\u5728\u4f7f\u7528\u65f6\u8981\u786e\u4fdd\u7d22\u5f15\u503c\u6709\u6548\u3002<\/p>\n<\/p>\n

      \u4e8c\u3001\u5207\u7247\u64cd\u4f5c<\/p>\n<\/p>\n

      \u5207\u7247\u64cd\u4f5c\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u7528\u4e8e\u83b7\u53d6\u5217\u8868\u7684\u5b50\u96c6\u3002\u5207\u7247\u901a\u8fc7\u6307\u5b9a\u8d77\u59cb\u548c\u7ed3\u675f\u7d22\u5f15\u6765\u8fd4\u56de\u5217\u8868\u7684\u4e00\u4e2a\u90e8\u5206\u3002<\/p>\n<\/p>\n

        \n
      1. \u57fa\u672c\u5207\u7247<\/li>\n<\/ol>\n

        \u5207\u7247\u7684\u57fa\u672c\u8bed\u6cd5\u662fmy_list[start:end]<\/code>\uff0c\u5176\u4e2dstart<\/code>\u662f\u8d77\u59cb\u7d22\u5f15\uff0cend<\/code>\u662f\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\u8be5\u7d22\u5f15\u4f4d\u7f6e\u7684\u5143\u7d20\uff09\u3002\u4f8b\u5982\uff0cmy_list[1:4]<\/code>\u8fd4\u56de\u5b50\u5217\u8868[20, 30, 40]<\/code>\u3002<\/p>\n<\/p>\n

          \n
        1. \u6b65\u957f\u5207\u7247<\/li>\n<\/ol>\n

          \u5207\u7247\u64cd\u4f5c\u8fd8\u652f\u6301\u6b65\u957f\u53c2\u6570\uff0c\u8bed\u6cd5\u4e3amy_list[start:end:step]<\/code>\u3002\u6b65\u957f\u53c2\u6570\u5141\u8bb8\u6211\u4eec\u4ee5\u6307\u5b9a\u7684\u95f4\u9694\u9009\u62e9\u5143\u7d20\u3002\u4f8b\u5982\uff0cmy_list[0:5:2]<\/code>\u8fd4\u56de[10, 30, 50]<\/code>\u3002<\/p>\n<\/p>\n

          \u5207\u7247\u64cd\u4f5c\u975e\u5e38\u7075\u6d3b\uff0c\u53ef\u4ee5\u8f7b\u677e\u83b7\u53d6\u5217\u8868\u7684\u591a\u4e2a\u5143\u7d20\uff0c\u9002\u7528\u4e8e\u9700\u8981\u6279\u91cf\u5904\u7406\u5143\u7d20\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n

          \u4e09\u3001\u904d\u5386\u5217\u8868<\/p>\n<\/p>\n

          \u904d\u5386\u5217\u8868\u662f\u4e00\u79cd\u67e5\u770b\u548c\u5904\u7406\u5217\u8868\u4e2d\u6bcf\u4e2a\u5143\u7d20\u7684\u5e38\u89c1\u65b9\u6cd5\u3002\u901a\u8fc7\u5faa\u73af\u904d\u5386\uff0c\u53ef\u4ee5\u8fdb\u884c\u590d\u6742\u7684\u64cd\u4f5c\uff0c\u5982\u8fc7\u6ee4\u3001\u8f6c\u6362\u548c\u7edf\u8ba1\u3002<\/p>\n<\/p>\n

            \n
          1. for\u5faa\u73af<\/li>\n<\/ol>\n

            \u4f7f\u7528for\u5faa\u73af\u662f\u904d\u5386\u5217\u8868\u7684\u6700\u5e38\u89c1\u65b9\u5f0f\u3002\u901a\u8fc7for\u5faa\u73af\uff0c\u53ef\u4ee5\u8bbf\u95ee\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n

            my_list = [10, 20, 30, 40, 50]<\/p>\n
            for element in my_list:<\/p>\n
                print(element)<\/p>\n
            <\/code><\/pre>\n<\/p>\n
            \u4e0a\u8ff0\u4ee3\u7801\u5c06\u4f9d\u6b21\u6253\u5370\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u3002<\/p>\n<\/p>\n
              \n
            1. enumerate\u51fd\u6570<\/li>\n<\/ol>\n
              enumerate\u51fd\u6570\u7528\u4e8e\u5728\u904d\u5386\u5217\u8868\u65f6\u83b7\u53d6\u5143\u7d20\u53ca\u5176\u7d22\u5f15\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<\/p>\n
              my_list = [10, 20, 30, 40, 50]<\/p>\n
              for index, element in enumerate(my_list):<\/p>\n
                  print(f"Index: {index}, Element: {element}")<\/p>\n
              <\/code><\/pre>\n<\/p>\n
              \u4f7f\u7528enumerate\u51fd\u6570\uff0c\u53ef\u4ee5\u540c\u65f6\u8bbf\u95ee\u5143\u7d20\u53ca\u5176\u7d22\u5f15\uff0c\u9002\u7528\u4e8e\u9700\u8981\u7d22\u5f15\u4fe1\u606f\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n
              \u56db\u3001\u5217\u8868\u65b9\u6cd5<\/p>\n<\/p>\n
              Python\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5217\u8868\u65b9\u6cd5\uff0c\u7528\u4e8e\u67e5\u770b\u548c\u5904\u7406\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u7b80\u5316\u5e38\u89c1\u64cd\u4f5c\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u6548\u7387\u3002<\/p>\n<\/p>\n
                \n
              1. index\u65b9\u6cd5<\/li>\n<\/ol>\n
                index\u65b9\u6cd5\u7528\u4e8e\u67e5\u627e\u6307\u5b9a\u5143\u7d20\u5728\u5217\u8868\u4e2d\u7684\u7d22\u5f15\u4f4d\u7f6e\u3002\u8bed\u6cd5\u4e3amy_list.index(element)<\/code>\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
                my_list = [10, 20, 30, 40, 50]<\/p>\n
                index = my_list.index(30)<\/p>\n
                print(index)  # \u8f93\u51fa\uff1a2<\/p>\n
                <\/code><\/pre>\n<\/p>\n
                index\u65b9\u6cd5\u9002\u7528\u4e8e\u9700\u8981\u67e5\u627e\u5143\u7d20\u4f4d\u7f6e\u7684\u573a\u666f\u3002\u7136\u800c\uff0c\u5982\u679c\u5143\u7d20\u4e0d\u5b58\u5728\u4e8e\u5217\u8868\u4e2d\uff0c\u4f1a\u5f15\u53d1ValueError<\/code>\u3002<\/p>\n<\/p>\n
                  \n
                1. count\u65b9\u6cd5<\/li>\n<\/ol>\n
                  count\u65b9\u6cd5\u7528\u4e8e\u7edf\u8ba1\u5217\u8868\u4e2d\u67d0\u4e2a\u5143\u7d20\u7684\u51fa\u73b0\u6b21\u6570\u3002\u8bed\u6cd5\u4e3amy_list.count(element)<\/code>\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
                  my_list = [10, 20, 30, 20, 50]<\/p>\n
                  count = my_list.count(20)<\/p>\n
                  print(count)  # \u8f93\u51fa\uff1a2<\/p>\n
                  <\/code><\/pre>\n<\/p>\n
                  count\u65b9\u6cd5\u9002\u7528\u4e8e\u9700\u8981\u7edf\u8ba1\u5143\u7d20\u9891\u7387\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n
                  \u603b\u7ed3<\/p>\n<\/p>\n
                  \u67e5\u770bPython\u5217\u8868\u5143\u7d20\u7684\u65b9\u6cd5\u591a\u79cd\u591a\u6837\uff0c\u5305\u62ec\u7d22\u5f15\u8bbf\u95ee\u3001\u5207\u7247\u64cd\u4f5c\u3001\u904d\u5386\u5217\u8868\u548c\u5217\u8868\u65b9\u6cd5\u3002\u7d22\u5f15\u8bbf\u95ee\u7b80\u5355\u76f4\u63a5\uff0c\u9002\u7528\u4e8e\u8bbf\u95ee\u5355\u4e2a\u5143\u7d20\uff1b\u5207\u7247\u64cd\u4f5c\u7075\u6d3b\u5f3a\u5927\uff0c\u9002\u7528\u4e8e\u6279\u91cf\u5904\u7406\u5143\u7d20\uff1b\u904d\u5386\u5217\u8868\u9002\u5408\u590d\u6742\u64cd\u4f5c\uff1b\u5217\u8868\u65b9\u6cd5\u63d0\u4f9b\u4e86\u4fbf\u6377\u7684\u5de5\u5177\uff0c\u9002\u7528\u4e8e\u5e38\u89c1\u7684\u67e5\u627e\u548c\u7edf\u8ba1\u64cd\u4f5c\u3002\u901a\u8fc7\u7075\u6d3b\u8fd0\u7528\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u9ad8\u6548\u5730\u5904\u7406\u5217\u8868\u6570\u636e\u3002<\/p>\n<\/p>\n
                  \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
                   \u5982\u4f55\u5728Python\u4e2d\u67e5\u770b\u5217\u8868\u7684\u6240\u6709\u5143\u7d20\uff1f<\/strong>
                  \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528print()<\/code>\u51fd\u6570\u76f4\u63a5\u8f93\u51fa\u5217\u8868\u7684\u5185\u5bb9\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u6709\u4e00\u4e2a\u540d\u4e3amy_list<\/code>\u7684\u5217\u8868\uff0c\u4f7f\u7528print(my_list)<\/code>\u5373\u53ef\u67e5\u770b\u6240\u6709\u5143\u7d20\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u5faa\u73af\u904d\u5386\u5217\u8868\u4e5f\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u901a\u8fc7for<\/code>\u5faa\u73af\u9010\u4e2a\u6253\u5370\u6bcf\u4e2a\u5143\u7d20\u3002<\/p>\n
                  \u53ef\u4ee5\u4f7f\u7528\u54ea\u4e9b\u65b9\u6cd5\u6765\u83b7\u53d6\u5217\u8868\u4e2d\u67d0\u4e2a\u7279\u5b9a\u5143\u7d20\u7684\u7d22\u5f15\uff1f<\/strong>
                  \u53ef\u4ee5\u4f7f\u7528index()<\/code>\u65b9\u6cd5\u6765\u67e5\u627e\u7279\u5b9a\u5143\u7d20\u7684\u7d22\u5f15\u3002\u4f8b\u5982\uff0cmy_list.index(element)<\/code>\u5c06\u8fd4\u56de\u8be5\u5143\u7d20\u5728\u5217\u8868\u4e2d\u7684\u4f4d\u7f6e\u3002\u5982\u679c\u8be5\u5143\u7d20\u5728\u5217\u8868\u4e2d\u4e0d\u5b58\u5728\uff0c\u5219\u4f1a\u5f15\u53d1ValueError<\/code>\u5f02\u5e38\uff0c\u56e0\u6b64\u53ef\u4ee5\u4f7f\u7528\u5f02\u5e38\u5904\u7406\u6765\u786e\u4fdd\u4ee3\u7801\u7684\u5065\u58ee\u6027\u3002<\/p>\n
                  \u5982\u4f55\u68c0\u67e5\u5217\u8868\u4e2d\u662f\u5426\u5305\u542b\u67d0\u4e2a\u7279\u5b9a\u7684\u5143\u7d20\uff1f<\/strong>
                  \u53ef\u4ee5\u4f7f\u7528in<\/code>\u5173\u952e\u5b57\u6765\u68c0\u67e5\u67d0\u4e2a\u5143\u7d20\u662f\u5426\u5b58\u5728\u4e8e\u5217\u8868\u4e2d\u3002\u4f8b\u5982\uff0cif element in my_list:<\/code>\u53ef\u4ee5\u7528\u4e8e\u5224\u65ad\u8be5\u5143\u7d20\u662f\u5426\u5728my_list<\/code>\u4e2d\u3002\u5982\u679c\u5b58\u5728\uff0c\u53ef\u4ee5\u6267\u884c\u76f8\u5e94\u7684\u64cd\u4f5c\u3002\u8fd9\u79cd\u65b9\u6cd5\u975e\u5e38\u7b80\u5355\u4e14\u76f4\u89c2\uff0c\u9002\u5408\u5feb\u901f\u68c0\u67e5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u67e5\u770b\u5217\u8868\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u201c\u7d22\u5f15\u8bbf\u95ee\u3001\u5207\u7247\u64cd\u4f5c\u3001\u904d\u5386\u5217\u8868\u3001\u5217\u8868\u65b9\u6cd5\u201d\u6765\u5b9e\u73b0\u3002\u5176\u4e2d\uff0c\u7d22\u5f15\u8bbf\u95ee\u662f\u6700\u5e38\u7528\u7684 […]","protected":false},"author":3,"featured_media":1011145,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1011138"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1011138"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1011138\/revisions"}],"predecessor-version":[{"id":1011148,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1011138\/revisions\/1011148"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1011145"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1011138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1011138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1011138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}