{"id":973923,"date":"2024-12-27T06:00:49","date_gmt":"2024-12-26T22:00:49","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/973923.html"},"modified":"2024-12-27T06:00:51","modified_gmt":"2024-12-26T22:00:51","slug":"python%e5%a6%82%e4%bd%95%e9%80%80%e5%87%ba%e6%97%a0%e9%99%90%e5%be%aa%e7%8e%af","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/973923.html","title":{"rendered":"python\u5982\u4f55\u9000\u51fa\u65e0\u9650\u5faa\u73af"},"content":{"rendered":"

\"python\u5982\u4f55\u9000\u51fa\u65e0\u9650\u5faa\u73af\"<\/p>\n

\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u51e0\u79cd\u65b9\u6cd5\u9000\u51fa\u65e0\u9650\u5faa\u73af\uff0c\u5305\u62ec\u4f7f\u7528break\u8bed\u53e5\u3001\u6761\u4ef6\u63a7\u5236\u9000\u51fa\u3001\u5f02\u5e38\u5904\u7406\u7b49\u3002\u5176\u4e2d\uff0c\u4f7f\u7528break\u8bed\u53e5\u662f\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u3002<\/strong>\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u5b9e\u7528\u7684\u793a\u4f8b\u548c\u6280\u5de7\u3002<\/p>\n<\/p>\n

\u4e00\u3001BREAK\u8bed\u53e5<\/p>\n<\/p>\n

\u5728Python\u4e2d\uff0cbreak<\/code>\u8bed\u53e5\u7528\u4e8e\u7acb\u5373\u9000\u51fa\u5faa\u73af\u3002\u5b83\u5e38\u7528\u4e8ewhile<\/code>\u5faa\u73af\u548cfor<\/code>\u5faa\u73af\u4e2d\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6253\u7834\u65e0\u9650\u5faa\u73af\u3002\u4f8b\u5982\uff0c\u5f53\u6ee1\u8db3\u67d0\u4e2a\u7279\u5b9a\u6761\u4ef6\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u5faa\u73af\u4f53\u4e2d\u4f7f\u7528break<\/code>\u6765\u7ec8\u6b62\u5faa\u73af\u3002<\/p>\n<\/p>\n

    \n
  1. \u4f7f\u7528break\u9000\u51fa\u65e0\u9650\u5faa\u73af<\/strong><\/li>\n<\/ol>\n

    \u901a\u5e38\uff0c\u6211\u4eec\u5728while True:<\/code>\u4e2d\u4f7f\u7528break<\/code>\u6765\u9000\u51fa\u5faa\u73af\uff1a<\/p>\n<\/p>\n

    while True:<\/p>\n
        user_input = input("Enter 'exit' to quit: ")<\/p>\n
        if user_input.lower() == 'exit':<\/p>\n
            break<\/p>\n
        print("You entered:", user_input)<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5f53\u7528\u6237\u8f93\u5165'exit'\u65f6\uff0c\u7a0b\u5e8f\u6267\u884cbreak<\/code>\u8bed\u53e5\u5e76\u9000\u51fa\u5faa\u73af\u3002<\/p>\n<\/p>\n
      \n
    1. \u7ed3\u5408\u6761\u4ef6\u8bed\u53e5<\/strong><\/li>\n<\/ol>\n
      \u5728\u8bb8\u591a\u60c5\u51b5\u4e0b\uff0cbreak<\/code>\u8bed\u53e5\u4e0e\u6761\u4ef6\u8bed\u53e5\u7ed3\u5408\u4f7f\u7528\uff0c\u4ee5\u4fbf\u5728\u7279\u5b9a\u6761\u4ef6\u4e0b\u9000\u51fa\u5faa\u73af\uff1a<\/p>\n<\/p>\n
      count = 0<\/p>\n
      while True:<\/p>\n
          print("Count:", count)<\/p>\n
          count += 1<\/p>\n
          if count >= 10:<\/p>\n
              break<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u8fd9\u91cc\uff0c\u5faa\u73af\u5c06\u5728\u8ba1\u6570\u5668\u8fbe\u523010\u65f6\u505c\u6b62\u3002<\/p>\n<\/p>\n
      \u4e8c\u3001\u6761\u4ef6\u63a7\u5236\u9000\u51fa<\/p>\n<\/p>\n
      \u9664\u4e86\u4f7f\u7528break<\/code>\u8bed\u53e5\u5916\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7\u6761\u4ef6\u63a7\u5236\u6765\u9000\u51fa\u65e0\u9650\u5faa\u73af\u3002\u901a\u8fc7\u5728\u5faa\u73af\u6761\u4ef6\u4e2d\u52a0\u5165\u4e00\u4e2a\u72b6\u6001\u53d8\u91cf\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u65f6\u66f4\u6539\u72b6\u6001\uff0c\u4ece\u800c\u7ec8\u6b62\u5faa\u73af\u3002<\/p>\n<\/p>\n
        \n
      1. \u4f7f\u7528\u72b6\u6001\u53d8\u91cf<\/strong><\/li>\n<\/ol>\n
        \u901a\u8fc7\u8bbe\u7f6e\u4e00\u4e2a\u5e03\u5c14\u53d8\u91cf\u6765\u63a7\u5236\u5faa\u73af\u7684\u7ee7\u7eed\u6216\u505c\u6b62\uff1a<\/p>\n<\/p>\n
        continue_loop = True<\/p>\n
        while continue_loop:<\/p>\n
            user_input = input("Enter 'stop' to quit: ")<\/p>\n
            if user_input.lower() == 'stop':<\/p>\n
                continue_loop = False<\/p>\n
            else:<\/p>\n
                print("You entered:", user_input)<\/p>\n
        <\/code><\/pre>\n<\/p>\n
        \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5f53\u7528\u6237\u8f93\u5165'stop'\u65f6\uff0ccontinue_loop<\/code>\u88ab\u8bbe\u7f6e\u4e3aFalse<\/code>\uff0c\u4ece\u800c\u9000\u51fa\u5faa\u73af\u3002<\/p>\n<\/p>\n
          \n
        1. \u5229\u7528\u51fd\u6570\u8fd4\u56de\u503c<\/strong><\/li>\n<\/ol>\n
          \u901a\u8fc7\u51fd\u6570\u8fd4\u56de\u503c\u6765\u63a7\u5236\u5faa\u73af\u9000\u51fa\uff1a<\/p>\n<\/p>\n
          def should_continue():<\/p>\n
              user_input = input("Enter 'end' to quit: ")<\/p>\n
              return user_input.lower() != 'end'<\/p>\n
          while should_continue():<\/p>\n
              print("Looping...")<\/p>\n
          <\/code><\/pre>\n<\/p>\n
          \u8fd9\u91cc\uff0cshould_continue<\/code>\u51fd\u6570\u901a\u8fc7\u8fd4\u56de\u5e03\u5c14\u503c\u6765\u51b3\u5b9a\u662f\u5426\u7ee7\u7eed\u5faa\u73af\u3002<\/p>\n<\/p>\n
          \u4e09\u3001\u5f02\u5e38\u5904\u7406<\/p>\n<\/p>\n
          \u5f02\u5e38\u5904\u7406\u662f\u4e00\u79cd\u66f4\u9ad8\u7ea7\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5728\u9047\u5230\u9519\u8bef\u6216\u7279\u5b9a\u6761\u4ef6\u65f6\u9000\u51fa\u5faa\u73af\u3002\u901a\u8fc7\u4f7f\u7528try-except<\/code>\u7ed3\u6784\uff0c\u6211\u4eec\u53ef\u4ee5\u6355\u83b7\u5f02\u5e38\u5e76\u5728\u53d1\u751f\u5f02\u5e38\u65f6\u7ec8\u6b62\u5faa\u73af\u3002<\/p>\n<\/p>\n
            \n
          1. \u6355\u83b7\u5f02\u5e38<\/strong><\/li>\n<\/ol>\n
            \u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5faa\u73af\u53ef\u80fd\u4f1a\u56e0\u5f02\u5e38\u60c5\u51b5\u800c\u9700\u8981\u9000\u51fa\uff1a<\/p>\n<\/p>\n
            while True:<\/p>\n
                try:<\/p>\n
                    number = int(input("Enter a number (0 to exit): "))<\/p>\n
                    if number == 0:<\/p>\n
                        break<\/p>\n
                    print("Number:", number)<\/p>\n
                except ValueError:<\/p>\n
                    print("Invalid input. Please enter a valid number.")<\/p>\n
            <\/code><\/pre>\n<\/p>\n
            \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5f53\u7528\u6237\u8f93\u5165\u65e0\u6548\u6570\u636e\u65f6\uff0c\u7a0b\u5e8f\u6355\u83b7ValueError<\/code>\u5e76\u7ee7\u7eed\u63d0\u793a\u7528\u6237\u8f93\u5165\u3002<\/p>\n<\/p>\n
              \n
            1. \u81ea\u5b9a\u4e49\u5f02\u5e38\u9000\u51fa<\/strong><\/li>\n<\/ol>\n
              \u53ef\u4ee5\u5b9a\u4e49\u81ea\u5b9a\u4e49\u5f02\u5e38\u4ee5\u63a7\u5236\u5faa\u73af\u9000\u51fa\uff1a<\/p>\n<\/p>\n
              class CustomExit(Exception):<\/p>\n
                  pass<\/p>\n
              try:<\/p>\n
                  while True:<\/p>\n
                      user_input = input("Enter 'quit' to exit: ")<\/p>\n
                      if user_input.lower() == 'quit':<\/p>\n
                          rAI<\/a>se CustomExit<\/p>\n
                      print("You entered:", user_input)<\/p>\n
              except CustomExit:<\/p>\n
                  print("Exiting loop.")<\/p>\n
              <\/code><\/pre>\n<\/p>\n
              \u8fd9\u91cc\uff0c\u901a\u8fc7\u5f15\u53d1\u548c\u6355\u83b7CustomExit<\/code>\u5f02\u5e38\u6765\u9000\u51fa\u5faa\u73af\u3002<\/p>\n<\/p>\n
              \u56db\u3001\u5b9e\u7528\u6280\u5de7\u548c\u6ce8\u610f\u4e8b\u9879<\/p>\n<\/p>\n
                \n
              1. \u4f7f\u7528\u8ba1\u6570\u5668<\/strong><\/li>\n<\/ol>\n
                \u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528\u8ba1\u6570\u5668\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u63a7\u5236\u5faa\u73af\u7684\u8fd0\u884c\u6b21\u6570\uff1a<\/p>\n<\/p>\n
                max_iterations = 5<\/p>\n
                current_iteration = 0<\/p>\n
                while current_iteration < max_iterations:<\/p>\n
                    print("Iteration:", current_iteration)<\/p>\n
                    current_iteration += 1<\/p>\n
                <\/code><\/pre>\n<\/p>\n
                  \n
                1. \u8c03\u8bd5\u548c\u65e5\u5fd7<\/strong><\/li>\n<\/ol>\n
                  \u5728\u8c03\u8bd5\u590d\u6742\u7a0b\u5e8f\u65f6\uff0c\u6dfb\u52a0\u65e5\u5fd7\u8f93\u51fa\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u4e86\u89e3\u5faa\u73af\u6267\u884c\u7684\u72b6\u6001\u548c\u9000\u51fa\u6761\u4ef6\uff1a<\/p>\n<\/p>\n
                  import logging<\/p>\n
                  logging.basicConfig(level=logging.DEBUG)<\/p>\n
                  while True:<\/p>\n
                      logging.debug("Loop is running.")<\/p>\n
                      user_input = input("Enter 'exit' to stop: ")<\/p>\n
                      if user_input.lower() == 'exit':<\/p>\n
                          logging.debug("Exiting loop.")<\/p>\n
                          break<\/p>\n
                  <\/code><\/pre>\n<\/p>\n
                    \n
                  1. \u907f\u514d\u6b7b\u5faa\u73af<\/strong><\/li>\n<\/ol>\n
                    \u5728\u7f16\u5199\u5faa\u73af\u65f6\uff0c\u59cb\u7ec8\u786e\u4fdd\u5faa\u73af\u6709\u660e\u786e\u7684\u9000\u51fa\u6761\u4ef6\uff0c\u4ee5\u907f\u514d\u7a0b\u5e8f\u9677\u5165\u6b7b\u5faa\u73af\u3002\u68c0\u67e5\u5faa\u73af\u6761\u4ef6\u548c\u9000\u51fa\u903b\u8f91\u662f\u9632\u6b62\u6b7b\u5faa\u73af\u7684\u91cd\u8981\u6b65\u9aa4\u3002<\/p>\n<\/p>\n
                      \n
                    1. \u6027\u80fd\u8003\u8651<\/strong><\/li>\n<\/ol>\n
                      \u5728\u5904\u7406\u5927\u91cf\u6570\u636e\u6216\u590d\u6742\u903b\u8f91\u65f6\uff0c\u4f18\u5316\u5faa\u73af\u7684\u6027\u80fd\u662f\u5173\u952e\u3002\u901a\u8fc7\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u64cd\u4f5c\u548c\u6539\u8fdb\u7b97\u6cd5\uff0c\u53ef\u4ee5\u63d0\u9ad8\u5faa\u73af\u6548\u7387\u3002<\/p>\n<\/p>\n
                      \u7efc\u4e0a\u6240\u8ff0\uff0cPython\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u9000\u51fa\u65e0\u9650\u5faa\u73af\uff0c\u5305\u62ecbreak<\/code>\u8bed\u53e5\u3001\u6761\u4ef6\u63a7\u5236\u548c\u5f02\u5e38\u5904\u7406\u3002\u7406\u89e3\u8fd9\u4e9b\u65b9\u6cd5\u7684\u5de5\u4f5c\u539f\u7406\uff0c\u5e76\u7ed3\u5408\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u9000\u51fa\u7b56\u7565\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u7f16\u5199\u51fa\u9ad8\u6548\u548c\u53ef\u9760\u7684\u7a0b\u5e8f\u3002\u5728\u7f16\u5199\u5faa\u73af\u65f6\uff0c\u5e94\u59cb\u7ec8\u8003\u8651\u6027\u80fd\u548c\u53ef\u8bfb\u6027\uff0c\u786e\u4fdd\u7a0b\u5e8f\u80fd\u591f\u5728\u9884\u671f\u6761\u4ef6\u4e0b\u6b63\u786e\u9000\u51fa\u3002<\/p>\n<\/p>\n
                      \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
                       \u5982\u4f55\u5728Python\u4e2d\u4f18\u96c5\u5730\u9000\u51fa\u65e0\u9650\u5faa\u73af\uff1f<\/strong>
                      \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528break<\/code>\u8bed\u53e5\u6765\u4f18\u96c5\u5730\u9000\u51fa\u65e0\u9650\u5faa\u73af\u3002\u901a\u8fc7\u8bbe\u7f6e\u4e00\u4e2a\u6761\u4ef6\uff0c\u5f53\u8be5\u6761\u4ef6\u6ee1\u8db3\u65f6\uff0cbreak<\/code>\u8bed\u53e5\u4f1a\u88ab\u89e6\u53d1\uff0c\u4ece\u800c\u8df3\u51fa\u5faa\u73af\u3002\u6b64\u5916\uff0c\u4f7f\u7528try-except<\/code>\u8bed\u53e5\u53ef\u4ee5\u6355\u6349\u5230\u4e2d\u65ad\u4fe1\u53f7\uff08\u5982Ctrl+C\uff09\uff0c\u4ece\u800c\u5b9e\u73b0\u66f4\u4f18\u96c5\u7684\u9000\u51fa\u5904\u7406\u3002<\/p>\n
                      \u5728Python\u4e2d\u6709\u54ea\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u68c0\u6d4b\u5faa\u73af\u6761\u4ef6\uff1f<\/strong>
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                      \u4f7f\u7528Python\u7684\u5f02\u5e38\u5904\u7406\u6765\u4e2d\u65ad\u5faa\u73af\u6709\u4ec0\u4e48\u597d\u5904\uff1f<\/strong>
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