{"id":963568,"date":"2024-12-27T04:19:25","date_gmt":"2024-12-26T20:19:25","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/963568.html"},"modified":"2024-12-27T04:19:28","modified_gmt":"2024-12-26T20:19:28","slug":"python%e5%a6%82%e4%bd%95%e8%b7%b3%e5%87%bawhile%e5%be%aa%e7%8e%af","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/963568.html","title":{"rendered":"python\u5982\u4f55\u8df3\u51fawhile\u5faa\u73af"},"content":{"rendered":"

\"python\u5982\u4f55\u8df3\u51fawhile\u5faa\u73af\"<\/p>\n

\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528break\u3001\u8bbe\u7f6e\u6761\u4ef6\u53d8\u91cf\u3001\u4f7f\u7528return\u8bed\u53e5\u7b49\u65b9\u5f0f\u8df3\u51fawhile\u5faa\u73af\u3002<\/strong>\u5176\u4e2d\uff0c\u4f7f\u7528break\u8bed\u53e5\u662f\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\uff0c\u901a\u8fc7\u5728\u5faa\u73af\u4f53\u4e2d\u8bbe\u7f6e\u4e00\u4e2a\u6761\u4ef6\uff0c\u5f53\u6ee1\u8db3\u8be5\u6761\u4ef6\u65f6\uff0c\u6267\u884cbreak\u8bed\u53e5\u6765\u8df3\u51fa\u5faa\u73af\u3002\u53e6\u5916\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u4e00\u4e2a\u6761\u4ef6\u53d8\u91cf\uff0c\u5f53\u8be5\u53d8\u91cf\u5728\u5faa\u73af\u4f53\u4e2d\u8fbe\u5230\u67d0\u4e00\u7279\u5b9a\u72b6\u6001\u65f6\uff0c\u6539\u53d8\u5faa\u73af\u6761\u4ef6\u4ece\u800c\u9000\u51fa\u5faa\u73af\u3002\u6b64\u5916\uff0c\u82e5while\u5faa\u73af\u5728\u51fd\u6570\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7return\u8bed\u53e5\u76f4\u63a5\u8fd4\u56de\u4ece\u800c\u7ec8\u6b62\u5faa\u73af\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528BREAK\u8bed\u53e5<\/p>\n<\/p>\n

\u4f7f\u7528break\u8bed\u53e5\u662fPython\u4e2d\u8df3\u51fawhile\u5faa\u73af\u7684\u76f4\u63a5\u65b9\u6cd5\u4e4b\u4e00\u3002break\u8bed\u53e5\u7528\u4e8e\u7acb\u5373\u7ec8\u6b62\u5faa\u73af\uff0c\u5e76\u8df3\u51fa\u5faa\u73af\u4f53\u3002<\/p>\n<\/p>\n

    \n
  1. \u57fa\u672c\u7528\u6cd5<\/strong><\/li>\n<\/ol>\n

    \u5728while\u5faa\u73af\u4f53\u5185\uff0c\u8bbe\u7f6e\u4e00\u4e2a\u6761\u4ef6\uff0c\u5f53\u8be5\u6761\u4ef6\u4e3a\u771f\u65f6\uff0c\u6267\u884cbreak\u8bed\u53e5\u4ece\u800c\u8df3\u51fa\u5faa\u73af\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n

    while True:<\/p>\n
        user_input = input("\u8bf7\u8f93\u5165'q'\u4ee5\u9000\u51fa\u5faa\u73af: ")<\/p>\n
        if user_input == 'q':<\/p>\n
            break<\/p>\n
        print(f"\u60a8\u8f93\u5165\u7684\u662f: {user_input}")<\/p>\n
    <\/code><\/pre>\n<\/p>\n
      \n
    1. \u7ed3\u5408\u5176\u4ed6\u63a7\u5236\u7ed3\u6784<\/strong><\/li>\n<\/ol>\n
      break\u8bed\u53e5\u901a\u5e38\u4e0eif\u8bed\u53e5\u7ed3\u5408\u4f7f\u7528\uff0c\u4ee5\u66f4\u7075\u6d3b\u5730\u63a7\u5236\u5faa\u73af\u7684\u9000\u51fa\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
      counter = 0<\/p>\n
      while counter < 10:<\/p>\n
          print(f"\u5f53\u524d\u8ba1\u6570: {counter}")<\/p>\n
          if counter == 5:<\/p>\n
              print("\u8ba1\u6570\u8fbe\u52305\uff0c\u8df3\u51fa\u5faa\u73af")<\/p>\n
              break<\/p>\n
          counter += 1<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5728\u6ee1\u8db3\u67d0\u4e2a\u6761\u4ef6\u65f6\u6709\u9009\u62e9\u5730\u8df3\u51fa\u5faa\u73af\u3002<\/p>\n<\/p>\n
      \u4e8c\u3001\u8bbe\u7f6e\u6761\u4ef6\u53d8\u91cf<\/p>\n<\/p>\n
      \u8bbe\u7f6e\u4e00\u4e2a\u6761\u4ef6\u53d8\u91cf\u662f\u63a7\u5236while\u5faa\u73af\u7684\u5e38\u7528\u65b9\u6cd5\u4e4b\u4e00\uff0c\u901a\u8fc7\u5728\u5faa\u73af\u4f53\u4e2d\u6539\u53d8\u8be5\u53d8\u91cf\u7684\u503c\u6765\u63a7\u5236\u5faa\u73af\u7684\u6267\u884c\u3002<\/p>\n<\/p>\n
        \n
      1. \u4f7f\u7528\u5e03\u5c14\u53d8\u91cf<\/strong><\/li>\n<\/ol>\n
        \u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a\u5e03\u5c14\u53d8\u91cf\u6765\u51b3\u5b9a\u5faa\u73af\u662f\u5426\u7ee7\u7eed\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
        running = True<\/p>\n
        while running:<\/p>\n
            user_input = input("\u8bf7\u8f93\u5165'exit'\u4ee5\u9000\u51fa\u5faa\u73af: ")<\/p>\n
            if user_input == 'exit':<\/p>\n
                running = False<\/p>\n
            else:<\/p>\n
                print(f"\u60a8\u8f93\u5165\u7684\u662f: {user_input}")<\/p>\n
        <\/code><\/pre>\n<\/p>\n
          \n
        1. \u7ed3\u5408\u8ba1\u6570\u5668<\/strong><\/li>\n<\/ol>\n
          \u9664\u4e86\u5e03\u5c14\u53d8\u91cf\uff0c\u8fd8\u53ef\u4ee5\u7ed3\u5408\u8ba1\u6570\u5668\u6765\u63a7\u5236\u5faa\u73af\u7684\u6267\u884c\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
          counter = 0<\/p>\n
          max_count = 5<\/p>\n
          while counter < max_count:<\/p>\n
              print(f"\u5f53\u524d\u8ba1\u6570: {counter}")<\/p>\n
              counter += 1<\/p>\n
              if counter >= max_count:<\/p>\n
                  print("\u8ba1\u6570\u8fbe\u5230\u6700\u5927\u503c\uff0c\u9000\u51fa\u5faa\u73af")<\/p>\n
          <\/code><\/pre>\n<\/p>\n
          \u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5728\u8fbe\u5230\u67d0\u4e2a\u8ba1\u6570\u503c\u65f6\u8df3\u51fa\u5faa\u73af\u3002<\/p>\n<\/p>\n
          \u4e09\u3001\u4f7f\u7528RETURN\u8bed\u53e5<\/p>\n<\/p>\n
          \u5728\u51fd\u6570\u4e2d\uff0c\u4f7f\u7528return\u8bed\u53e5\u53ef\u4ee5\u76f4\u63a5\u7ec8\u6b62\u51fd\u6570\u7684\u6267\u884c\uff0c\u4ece\u800c\u8df3\u51fawhile\u5faa\u73af\u3002<\/p>\n<\/p>\n
            \n
          1. \u57fa\u672c\u7528\u6cd5<\/strong><\/li>\n<\/ol>\n
            \u5728\u51fd\u6570\u4e2d\uff0c\u4f7f\u7528return\u8bed\u53e5\u53ef\u4ee5\u7acb\u5373\u7ed3\u675f\u51fd\u6570\u7684\u6267\u884c\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
            def find_value():<\/p>\n
                while True:<\/p>\n
                    user_input = input("\u8bf7\u8f93\u5165\u4e00\u4e2a\u6570\u5b57\uff0c\u6216'q'\u4ee5\u9000\u51fa: ")<\/p>\n
                    if user_input == 'q':<\/p>\n
                        return<\/p>\n
                    print(f"\u60a8\u8f93\u5165\u7684\u662f: {user_input}")<\/p>\n
            find_value()<\/p>\n
            <\/code><\/pre>\n<\/p>\n
              \n
            1. \u7ed3\u5408\u6761\u4ef6\u5224\u65ad<\/strong><\/li>\n<\/ol>\n
              return\u8bed\u53e5\u901a\u5e38\u7ed3\u5408\u6761\u4ef6\u5224\u65ad\u4f7f\u7528\uff0c\u4ee5\u51b3\u5b9a\u662f\u5426\u7ec8\u6b62\u51fd\u6570\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
              def search_list(target, values):<\/p>\n
                  index = 0<\/p>\n
                  while index < len(values):<\/p>\n
                      if values[index] == target:<\/p>\n
                          print(f"\u627e\u5230\u76ee\u6807\u503c: {target}\uff0c\u5728\u4f4d\u7f6e: {index}")<\/p>\n
                          return<\/p>\n
                      index += 1<\/p>\n
                  print("\u76ee\u6807\u503c\u4e0d\u5728\u5217\u8868\u4e2d")<\/p>\n
              values_list = [1, 3, 5, 7, 9]<\/p>\n
              search_list(5, values_list)<\/p>\n
              <\/code><\/pre>\n<\/p>\n
              \u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5728\u627e\u5230\u76ee\u6807\u503c\u65f6\u7acb\u5373\u9000\u51fa\u5faa\u73af\u548c\u51fd\u6570\u3002<\/p>\n<\/p>\n
              \u56db\u3001\u4f7f\u7528EXCEPTION\u5904\u7406<\/p>\n<\/p>\n
              \u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u5229\u7528\u5f02\u5e38\u5904\u7406\u673a\u5236\u6765\u8df3\u51fawhile\u5faa\u73af\u3002<\/p>\n<\/p>\n
                \n
              1. \u57fa\u672c\u7528\u6cd5<\/strong><\/li>\n<\/ol>\n
                \u901a\u8fc7\u629b\u51fa\u5f02\u5e38\u5e76\u5728\u5916\u5c42\u6355\u83b7\u6765\u8df3\u51fa\u5faa\u73af\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
                try:<\/p>\n
                    while True:<\/p>\n
                        user_input = input("\u8bf7\u8f93\u5165\u4e00\u4e2a\u6570\u5b57\uff0c\u6216'q'\u4ee5\u9000\u51fa: ")<\/p>\n
                        if user_input == 'q':<\/p>\n
                            rAI<\/a>se StopIteration<\/p>\n
                        print(f"\u60a8\u8f93\u5165\u7684\u662f: {user_input}")<\/p>\n
                except StopIteration:<\/p>\n
                    print("\u5faa\u73af\u5df2\u9000\u51fa")<\/p>\n
                <\/code><\/pre>\n<\/p>\n
                  \n
                1. \u81ea\u5b9a\u4e49\u5f02\u5e38<\/strong><\/li>\n<\/ol>\n
                  \u53ef\u4ee5\u5b9a\u4e49\u81ea\u5df1\u7684\u5f02\u5e38\u7c7b\u578b\u4ee5\u66f4\u7cbe\u786e\u5730\u63a7\u5236\u5faa\u73af\u7684\u9000\u51fa\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
                  class ExitLoop(Exception):<\/p>\n
                      pass<\/p>\n
                  try:<\/p>\n
                      while True:<\/p>\n
                          user_input = input("\u8bf7\u8f93\u5165\u4e00\u4e2a\u6570\u5b57\uff0c\u6216'q'\u4ee5\u9000\u51fa: ")<\/p>\n
                          if user_input == 'q':<\/p>\n
                              raise ExitLoop<\/p>\n
                          print(f"\u60a8\u8f93\u5165\u7684\u662f: {user_input}")<\/p>\n
                  except ExitLoop:<\/p>\n
                      print("\u5faa\u73af\u5df2\u9000\u51fa")<\/p>\n
                  <\/code><\/pre>\n<\/p>\n
                  \u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5728\u7279\u5b9a\u60c5\u51b5\u4e0b\u8df3\u51fa\u5faa\u73af\u3002<\/p>\n<\/p>\n
                  \u4e94\u3001\u603b\u7ed3<\/p>\n<\/p>\n
                  \u5728Python\u4e2d\uff0c\u8df3\u51fawhile\u5faa\u73af\u7684\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u6700\u5e38\u7528\u7684\u662f\u4f7f\u7528break\u8bed\u53e5\u3002\u901a\u8fc7\u7ed3\u5408\u6761\u4ef6\u53d8\u91cf\u3001return\u8bed\u53e5\u4ee5\u53ca\u5f02\u5e38\u5904\u7406\u673a\u5236\uff0c\u53ef\u4ee5\u7075\u6d3b\u5730\u63a7\u5236\u5faa\u73af\u7684\u9000\u51fa\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5404\u6709\u4f18\u52a3\uff0c\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\u548c\u4ee3\u7801\u903b\u8f91\u3002\u638c\u63e1\u8fd9\u4e9b\u6280\u672f\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\uff0c\u4ece\u800c\u7f16\u5199\u51fa\u66f4\u9ad8\u6548\u548c\u5065\u58ee\u7684\u7a0b\u5e8f\u3002<\/p>\n<\/p>\n
                  \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
                   \u5982\u4f55\u5728Python\u4e2d\u5b89\u5168\u5730\u9000\u51fawhile\u5faa\u73af\uff1f<\/strong>
                  \u5728Python\u4e2d\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b89\u5168\u5730\u9000\u51fawhile\u5faa\u73af\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528break<\/code>\u8bed\u53e5\u3002\u5f53\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u65f6\uff0c\u60a8\u53ef\u4ee5\u5728\u5faa\u73af\u4f53\u5185\u8c03\u7528break<\/code>\uff0c\u8fd9\u4f1a\u7acb\u5373\u7ed3\u675f\u5faa\u73af\u5e76\u8df3\u51fa\u3002\u786e\u4fdd\u5728\u5faa\u73af\u4e2d\u6709\u6761\u4ef6\u5224\u65ad\uff0c\u4ee5\u4fbf\u5728\u5408\u9002\u7684\u65f6\u673a\u9000\u51fa\u3002<\/p>\n
                  \u5728while\u5faa\u73af\u4e2d\u5982\u4f55\u4f7f\u7528\u6807\u5fd7\u53d8\u91cf\u6765\u63a7\u5236\u9000\u51fa\uff1f<\/strong>
                  \u4f7f\u7528\u6807\u5fd7\u53d8\u91cf\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u7f16\u7a0b\u6280\u5de7\u3002\u60a8\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u5e03\u5c14\u53d8\u91cf\uff0c\u4f8b\u5982running<\/code>\uff0c\u5e76\u5728\u5faa\u73af\u6761\u4ef6\u4e2d\u4f7f\u7528\u5b83\u3002\u5f53\u60a8\u5e0c\u671b\u9000\u51fa\u5faa\u73af\u65f6\uff0c\u53ea\u9700\u5c06\u8be5\u53d8\u91cf\u8bbe\u7f6e\u4e3aFalse<\/code>\uff0c\u5faa\u73af\u5c06\u4f1a\u505c\u6b62\u3002\u8fd9\u79cd\u65b9\u6cd5\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u7075\u6d3b\u6027\uff0c\u7279\u522b\u662f\u5728\u9700\u8981\u6ee1\u8db3\u591a\u4e2a\u6761\u4ef6\u65f6\u3002<\/p>\n
                  \u5728Python\u4e2d\u662f\u5426\u53ef\u4ee5\u4f7f\u7528\u5f02\u5e38\u5904\u7406\u6765\u9000\u51fawhile\u5faa\u73af\uff1f<\/strong>
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