{"id":1003630,"date":"2024-12-27T10:18:56","date_gmt":"2024-12-27T02:18:56","guid":{"rendered":""},"modified":"2024-12-27T10:18:59","modified_gmt":"2024-12-27T02:18:59","slug":"while%e8%af%ad%e5%8f%a5%e5%a6%82%e4%bd%95%e5%88%a4%e6%96%adpython","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1003630.html","title":{"rendered":"while\u8bed\u53e5\u5982\u4f55\u5224\u65adPython"},"content":{"rendered":"

\"while\u8bed\u53e5\u5982\u4f55\u5224\u65adPython\"<\/p>\n

\u5728Python\u4e2d\uff0cwhile\u8bed\u53e5\u7528\u4e8e\u521b\u5efa\u5faa\u73af\uff0c\u76f4\u5230\u6761\u4ef6\u4e0d\u518d\u6ee1\u8db3\u4e3a\u6b62\u3002while\u8bed\u53e5\u7684\u5224\u65ad\u4e3b\u8981\u901a\u8fc7\u6761\u4ef6\u8868\u8fbe\u5f0f\u6765\u5b9e\u73b0\u3001\u5982\u679c\u6761\u4ef6\u4e3aTrue\uff0c\u5faa\u73af\u4f53\u5185\u7684\u4ee3\u7801\u4f1a\u6267\u884c\uff0c\u5426\u5219\u5faa\u73af\u7ec8\u6b62\u3001\u5728\u5faa\u73af\u4f53\u5185\u53ef\u4ee5\u4f7f\u7528break\u548ccontinue\u8bed\u53e5\u6765\u63a7\u5236\u5faa\u73af\u7684\u6267\u884c\u3002<\/strong>while\u8bed\u53e5\u662fPython\u4e2d\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u9002\u5408\u7528\u4e8e\u5728\u4e0d\u77e5\u9053\u5faa\u73af\u6b21\u6570\u7684\u60c5\u51b5\u4e0b\u6267\u884c\u91cd\u590d\u64cd\u4f5c\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecdwhile\u8bed\u53e5\u7684\u4f7f\u7528\u53ca\u5176\u76f8\u5173\u6982\u5ff5\u3002<\/p>\n<\/p>\n

\u4e00\u3001WHILE\u8bed\u53e5\u7684\u57fa\u672c\u7ed3\u6784<\/p>\n<\/p>\n

\u5728Python\u4e2d\uff0cwhile\u8bed\u53e5\u7684\u57fa\u672c\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n<\/p>\n

while \u6761\u4ef6\u8868\u8fbe\u5f0f:<\/p>\n
    \u5faa\u73af\u4f53<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0cPython\u4f1a\u9996\u5148\u8ba1\u7b97\u6761\u4ef6\u8868\u8fbe\u5f0f\u7684\u503c\u3002\u5982\u679c\u8be5\u503c\u4e3aTrue\uff0cPython\u5c06\u6267\u884c\u5faa\u73af\u4f53\u4e2d\u7684\u4ee3\u7801\uff1b\u5982\u679c\u8be5\u503c\u4e3aFalse\uff0cPython\u5c06\u7ec8\u6b62\u5faa\u73af\u5e76\u7ee7\u7eed\u6267\u884c\u540e\u7eed\u4ee3\u7801\u3002<\/p>\n<\/p>\n
\u4e8c\u3001WHILE\u8bed\u53e5\u7684\u5e38\u89c1\u7528\u6cd5<\/p>\n<\/p>\n
    \n
  1. \u65e0\u9650\u5faa\u73af<\/strong><\/li>\n<\/ol>\n
    \u65e0\u9650\u5faa\u73af\u662f\u6307\u6761\u4ef6\u6c38\u8fdc\u4e3aTrue\u7684\u5faa\u73af\uff0c\u5e38\u7528\u4e8e\u9700\u8981\u6301\u7eed\u8fd0\u884c\u7684\u7a0b\u5e8f\u4e2d\u3002\u4f8b\u5982\uff0c\u670d\u52a1\u5668\u7a0b\u5e8f\u53ef\u80fd\u9700\u8981\u4e00\u76f4\u76d1\u542c\u5ba2\u6237\u7aef\u8fde\u63a5\u8bf7\u6c42\uff1a<\/p>\n<\/p>\n
    while True:<\/p>\n
        print("This is an infinite loop")<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u901a\u5e38\u4f1a\u5728\u5faa\u73af\u4f53\u5185\u4f7f\u7528break\u8bed\u53e5\u6765\u9000\u51fa\u65e0\u9650\u5faa\u73af\u3002<\/p>\n<\/p>\n
      \n
    1. \u8ba1\u6570\u5faa\u73af<\/strong><\/li>\n<\/ol>\n
      \u8ba1\u6570\u5faa\u73af\u662f\u6307\u901a\u8fc7\u8ba1\u6570\u5668\u53d8\u91cf\u6765\u63a7\u5236\u5faa\u73af\u6b21\u6570\u7684\u5faa\u73af\u3002\u4f8b\u5982\uff0c\u6253\u53701\u523010\u7684\u6240\u6709\u6570\u5b57\uff1a<\/p>\n<\/p>\n
      count = 1<\/p>\n
      while count <= 10:<\/p>\n
          print(count)<\/p>\n
          count += 1<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u8fd9\u91cc\u7684count\u53d8\u91cf\u662f\u4e00\u4e2a\u8ba1\u6570\u5668\uff0c\u6bcf\u6b21\u5faa\u73af\u540e\u4f1a\u9012\u589e1\uff0c\u76f4\u5230count\u5927\u4e8e10\u65f6\uff0c\u5faa\u73af\u7ec8\u6b62\u3002<\/p>\n<\/p>\n
      \u4e09\u3001\u63a7\u5236\u5faa\u73af\u7684\u6267\u884c<\/p>\n<\/p>\n
        \n
      1. break\u8bed\u53e5<\/strong><\/li>\n<\/ol>\n
        break\u8bed\u53e5\u7528\u4e8e\u7acb\u5373\u9000\u51fa\u5faa\u73af\uff0c\u65e0\u8bba\u6761\u4ef6\u8868\u8fbe\u5f0f\u7684\u503c\u5982\u4f55\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
        count = 1<\/p>\n
        while count <= 10:<\/p>\n
            if count == 5:<\/p>\n
                break<\/p>\n
            print(count)<\/p>\n
            count += 1<\/p>\n
        <\/code><\/pre>\n<\/p>\n
        \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5faa\u73af\u4f1a\u5728count\u7b49\u4e8e5\u65f6\u7ec8\u6b62\u3002<\/p>\n<\/p>\n
          \n
        1. continue\u8bed\u53e5<\/strong><\/li>\n<\/ol>\n
          continue\u8bed\u53e5\u7528\u4e8e\u8df3\u8fc7\u5f53\u524d\u5faa\u73af\u7684\u5269\u4f59\u90e8\u5206\uff0c\u5e76\u76f4\u63a5\u8fdb\u5165\u4e0b\u4e00\u6b21\u5faa\u73af\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
          count = 0<\/p>\n
          while count < 10:<\/p>\n
              count += 1<\/p>\n
              if count % 2 == 0:<\/p>\n
                  continue<\/p>\n
              print(count)<\/p>\n
          <\/code><\/pre>\n<\/p>\n
          \u8fd9\u6bb5\u4ee3\u7801\u4f1a\u6253\u5370\u51fa1\u52309\u7684\u6240\u6709\u5947\u6570\u3002<\/p>\n<\/p>\n
          \u56db\u3001\u7ed3\u5408else\u8bed\u53e5\u7684\u4f7f\u7528<\/p>\n<\/p>\n
          \u5728Python\u4e2d\uff0cwhile\u8bed\u53e5\u53ef\u4ee5\u548celse\u8bed\u53e5\u7ed3\u5408\u4f7f\u7528\u3002else\u5b50\u53e5\u5c06\u5728\u5faa\u73af\u6b63\u5e38\u7ec8\u6b62\u65f6\u6267\u884c\uff0c\u800c\u4e0d\u662f\u5728\u901a\u8fc7break\u9000\u51fa\u5faa\u73af\u65f6\u6267\u884c\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
          count = 1<\/p>\n
          while count <= 5:<\/p>\n
              print(count)<\/p>\n
              count += 1<\/p>\n
          else:<\/p>\n
              print("Loop finished")<\/p>\n
          <\/code><\/pre>\n<\/p>\n
          \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5f53count\u5927\u4e8e5\u65f6\uff0c\u5faa\u73af\u6b63\u5e38\u7ec8\u6b62\u5e76\u6267\u884celse\u5b50\u53e5\u3002<\/p>\n<\/p>\n
          \u4e94\u3001\u5d4c\u5957WHILE\u5faa\u73af<\/p>\n<\/p>\n
          \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u5728while\u5faa\u73af\u4e2d\u5d4c\u5957\u53e6\u4e00\u4e2awhile\u5faa\u73af\uff0c\u4ee5\u5904\u7406\u590d\u6742\u7684\u903b\u8f91\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
          i = 1<\/p>\n
          while i <= 3:<\/p>\n
              j = 1<\/p>\n
              while j <= 2:<\/p>\n
                  print(f"i = {i}, j = {j}")<\/p>\n
                  j += 1<\/p>\n
              i += 1<\/p>\n
          <\/code><\/pre>\n<\/p>\n
          \u8fd9\u6bb5\u4ee3\u7801\u4f1a\u4ea7\u751f\u5982\u4e0b\u8f93\u51fa\uff1a<\/p>\n<\/p>\n
          i = 1, j = 1<\/p>\n
          i = 1, j = 2<\/p>\n
          i = 2, j = 1<\/p>\n
          i = 2, j = 2<\/p>\n
          i = 3, j = 1<\/p>\n
          i = 3, j = 2<\/p>\n
          <\/code><\/pre>\n<\/p>\n
          \u516d\u3001\u5e94\u7528\u573a\u666f\u4e0e\u6700\u4f73\u5b9e\u8df5<\/p>\n<\/p>\n
            \n
          1. \u7528\u6237\u8f93\u5165\u9a8c\u8bc1<\/strong><\/li>\n<\/ol>\n
            while\u5faa\u73af\u53ef\u4ee5\u7528\u4e8e\u6301\u7eed\u8bf7\u6c42\u7528\u6237\u8f93\u5165\uff0c\u76f4\u5230\u6536\u5230\u6709\u6548\u7684\u8f93\u5165\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
            while True:<\/p>\n
                user_input = input("Enter a number: ")<\/p>\n
                if user_input.isdigit():<\/p>\n
                    break<\/p>\n
                print("Invalid input, please enter a valid number.")<\/p>\n
            <\/code><\/pre>\n<\/p>\n
              \n
            1. \u8d44\u6e90\u76d1\u63a7<\/strong><\/li>\n<\/ol>\n
              \u5728\u7cfb\u7edf\u7ba1\u7406\u6216\u6570\u636e\u5904\u7406\u7a0b\u5e8f\u4e2d\uff0cwhile\u5faa\u73af\u53ef\u7528\u4e8e\u6301\u7eed\u76d1\u63a7\u8d44\u6e90\u72b6\u6001\u6216\u6570\u636e\u6d41\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
              import time<\/p>\n
              while True:<\/p>\n
                  check_system_status()<\/p>\n
                  time.sleep(60)  # \u6bcf\u969460\u79d2\u68c0\u67e5\u4e00\u6b21\u7cfb\u7edf\u72b6\u6001<\/p>\n
              <\/code><\/pre>\n<\/p>\n
                \n
              1. \u7b97\u6cd5\u5b9e\u73b0<\/strong><\/li>\n<\/ol>\n
                while\u5faa\u73af\u5e38\u7528\u4e8e\u5b9e\u73b0\u9700\u8981\u53cd\u590d\u8ba1\u7b97\u7684\u7b97\u6cd5\u3002\u4f8b\u5982\uff0c\u8ba1\u7b97\u4e00\u4e2a\u6570\u7684\u5e73\u65b9\u6839\uff1a<\/p>\n<\/p>\n
                number = 25<\/p>\n
                guess = number \/ 2.0<\/p>\n
                tolerance = 0.01<\/p>\n
                while abs(guess * guess - number) > tolerance:<\/p>\n
                    guess = (guess + number \/ guess) \/ 2.0<\/p>\n
                print(guess)<\/p>\n
                <\/code><\/pre>\n<\/p>\n
                \u4e03\u3001\u603b\u7ed3<\/p>\n<\/p>\n
                while\u8bed\u53e5\u662fPython\u7f16\u7a0b\u4e2d\u7684\u4e00\u4e2a\u57fa\u672c\u4e14\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u9700\u8981\u91cd\u590d\u6267\u884c\u7684\u4efb\u52a1\u3002\u901a\u8fc7\u7ed3\u5408\u4f7f\u7528break\u548ccontinue\u8bed\u53e5\uff0c\u4ee5\u53caelse\u5b50\u53e5\uff0cwhile\u8bed\u53e5\u53ef\u4ee5\u7075\u6d3b\u5730\u63a7\u5236\u7a0b\u5e8f\u7684\u6267\u884c\u6d41\u7a0b\u3002\u7406\u89e3while\u5faa\u73af\u7684\u5de5\u4f5c\u539f\u7406\u548c\u5e94\u7528\u573a\u666f\uff0c\u5c06\u6709\u52a9\u4e8e\u7f16\u5199\u66f4\u9ad8\u6548\u548c\u4f18\u96c5\u7684Python\u4ee3\u7801\u3002\u5728\u4f7f\u7528while\u5faa\u73af\u65f6\uff0c\u52a1\u5fc5\u6ce8\u610f\u907f\u514d\u51fa\u73b0\u65e0\u9650\u5faa\u73af\u7684\u60c5\u51b5\uff0c\u786e\u4fdd\u6761\u4ef6\u8868\u8fbe\u5f0f\u6700\u7ec8\u4f1a\u53d8\u4e3aFalse\uff0c\u4ece\u800c\u4fdd\u8bc1\u7a0b\u5e8f\u80fd\u591f\u6b63\u786e\u7ec8\u6b62\u3002<\/p>\n<\/p>\n
                \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
                 \u5982\u4f55\u5728Python\u4e2d\u4f7f\u7528while\u8bed\u53e5\u8fdb\u884c\u6761\u4ef6\u5224\u65ad\uff1f<\/strong>
                \u5728Python\u4e2d\uff0cwhile\u8bed\u53e5\u7528\u4e8e\u5728\u7ed9\u5b9a\u6761\u4ef6\u4e3a\u771f\u65f6\u91cd\u590d\u6267\u884c\u4e00\u6bb5\u4ee3\u7801\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u4e00\u4e2a\u5e03\u5c14\u6761\u4ef6\u6765\u5224\u65ad\u5faa\u73af\u662f\u5426\u7ee7\u7eed\u8fd0\u884c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u53d8\u91cf\u6765\u63a7\u5236\u5faa\u73af\u6b21\u6570\u6216\u6839\u636e\u7528\u6237\u8f93\u5165\u6765\u51b3\u5b9a\u4f55\u65f6\u9000\u51fa\u5faa\u73af\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff1a<\/p>\n
                count = 0\nwhile count < 5:\n    print("\u5f53\u524d\u8ba1\u6570:", count)\n    count += 1\n<\/code><\/pre>\n
                \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5faa\u73af\u4f1a\u4e00\u76f4\u6267\u884c\uff0c\u76f4\u5230count<\/code>\u7684\u503c\u8fbe\u52305\u3002<\/p>\n
                \u4f7f\u7528while\u8bed\u53e5\u65f6\uff0c\u5982\u4f55\u907f\u514d\u65e0\u9650\u5faa\u73af\u7684\u53d1\u751f\uff1f<\/strong>
                \u4e3a\u4e86\u9632\u6b62\u65e0\u9650\u5faa\u73af\uff0c\u786e\u4fdd\u5728while\u5faa\u73af\u4e2d\u6709\u660e\u786e\u7684\u9000\u51fa\u6761\u4ef6\uff0c\u5e76\u4e14\u5728\u5faa\u73af\u4f53\u5185\u5bf9\u63a7\u5236\u53d8\u91cf\u8fdb\u884c\u4fee\u6539\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u4f7f\u7528\u7528\u6237\u8f93\u5165\u4f5c\u4e3a\u6761\u4ef6\uff0c\u786e\u4fdd\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u80fd\u591f\u6b63\u786e\u66f4\u65b0\u6761\u4ef6\uff0c\u4f7f\u5176\u5728\u9002\u5f53\u7684\u65f6\u5019\u53d8\u4e3a\u5047\uff0c\u4ece\u800c\u7ed3\u675f\u5faa\u73af\u3002<\/p>\n
                \u5728Python\u4e2d\uff0cwhile\u8bed\u53e5\u4e0efor\u5faa\u73af\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/strong>
                while\u8bed\u53e5\u4e0efor\u5faa\u73af\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\u63a7\u5236\u7ed3\u6784\u3002while\u8bed\u53e5\u5728\u6761\u4ef6\u4e3a\u771f\u65f6\u91cd\u590d\u6267\u884c\uff0c\u800cfor\u5faa\u73af\u901a\u5e38\u7528\u4e8e\u904d\u5386\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff08\u5982\u5217\u8868\u3001\u5143\u7ec4\u6216\u5b57\u7b26\u4e32\uff09\u3002while\u9002\u5408\u7528\u4e8e\u6761\u4ef6\u4e0d\u786e\u5b9a\u7684\u60c5\u51b5\u4e0b\uff0c\u800cfor\u5219\u9002\u5408\u5728\u5df2\u77e5\u8fed\u4ee3\u6b21\u6570\u6216\u5143\u7d20\u6570\u91cf\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528\u3002\u4f8b\u5982\uff1a<\/p>\n
                # while\u5faa\u73af\u793a\u4f8b\nn = 0\nwhile n < 5:\n    print(n)\n    n += 1\n\n# for\u5faa\u73af\u793a\u4f8b\nfor n in range(5):\n    print(n)\n<\/code><\/pre>\n
                \u8fd9\u79cd\u533a\u522b\u4f7f\u5f97\u5b83\u4eec\u5728\u4e0d\u540c\u573a\u666f\u4e0b\u5404\u6709\u4f18\u52bf\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0cwhile\u8bed\u53e5\u7528\u4e8e\u521b\u5efa\u5faa\u73af\uff0c\u76f4\u5230\u6761\u4ef6\u4e0d\u518d\u6ee1\u8db3\u4e3a\u6b62\u3002while\u8bed\u53e5\u7684\u5224\u65ad\u4e3b\u8981\u901a\u8fc7\u6761\u4ef6\u8868\u8fbe\u5f0f\u6765\u5b9e […]","protected":false},"author":3,"featured_media":1003637,"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\/1003630"}],"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=1003630"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1003630\/revisions"}],"predecessor-version":[{"id":1003638,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1003630\/revisions\/1003638"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1003637"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1003630"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1003630"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1003630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}