{"id":956384,"date":"2024-12-27T02:33:48","date_gmt":"2024-12-26T18:33:48","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/956384.html"},"modified":"2024-12-27T02:33:50","modified_gmt":"2024-12-26T18:33:50","slug":"python%e5%a6%82%e4%bd%95%e8%be%93%e5%87%ba%e8%bf%ad%e4%bb%a3%e7%b1%bb%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/956384.html","title":{"rendered":"python\u5982\u4f55\u8f93\u51fa\u8fed\u4ee3\u7c7b\u578b"},"content":{"rendered":"

\"python\u5982\u4f55\u8f93\u51fa\u8fed\u4ee3\u7c7b\u578b\"<\/p>\n

Python\u8f93\u51fa\u8fed\u4ee3\u7c7b\u578b\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528iter()<\/code>\u51fd\u6570\u5c06\u5bf9\u8c61\u8f6c\u6362\u4e3a\u8fed\u4ee3\u5668\u3001\u4f7f\u7528type()<\/code>\u67e5\u770b\u5bf9\u8c61\u7c7b\u578b\u3001\u4ee5\u53ca\u901a\u8fc7isinstance()<\/code>\u51fd\u6570\u5224\u65ad\u5bf9\u8c61\u662f\u5426\u4e3a\u8fed\u4ee3\u7c7b\u578b\u3002<\/strong>\u5728\u8fd9\u5176\u4e2d\uff0c\u4f7f\u7528iter()<\/code>\u51fd\u6570\u5c06\u5bf9\u8c61\u8f6c\u6362\u4e3a\u8fed\u4ee3\u5668\u662f\u6700\u4e3a\u76f4\u63a5\u7684\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u4f7f\u4efb\u4f55\u53ef\u8fed\u4ee3\u5bf9\u8c61\u53d8\u4e3a\u8fed\u4ee3\u5668\uff0c\u4ece\u800c\u65b9\u4fbf\u540e\u7eed\u7684\u904d\u5386\u64cd\u4f5c\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u8be6\u7ec6\u63a2\u8ba8\u8fd9\u4e9b\u65b9\u6cd5\u4ee5\u53ca\u5b83\u4eec\u7684\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u7406\u89e3\u8fed\u4ee3\u7c7b\u578b<\/p>\n<\/p>\n

\u5728Python\u4e2d\uff0c\u8fed\u4ee3\u7c7b\u578b\uff08Iterable\uff09\u662f\u6307\u90a3\u4e9b\u53ef\u4ee5\u9010\u4e2a\u8fd4\u56de\u5176\u5143\u7d20\u7684\u5bf9\u8c61\u3002\u5e38\u89c1\u7684\u8fed\u4ee3\u7c7b\u578b\u5305\u62ec\u5217\u8868\u3001\u5143\u7ec4\u3001\u5b57\u7b26\u4e32\u3001\u5b57\u5178\u548c\u96c6\u5408\u7b49\u3002\u8fed\u4ee3\u5668\uff08Iterator\uff09\u5219\u662f\u5b9e\u73b0\u4e86__iter__()<\/code>\u548c__next__()<\/code>\u65b9\u6cd5\u7684\u5bf9\u8c61\uff0c\u5b83\u53ef\u4ee5\u5728\u8fed\u4ee3\u8fc7\u7a0b\u4e2d\u901a\u8fc7next()<\/code>\u51fd\u6570\u9010\u4e2a\u8fd4\u56de\u5143\u7d20\u3002<\/p>\n<\/p>\n

    \n
  1. \n

    \u8fed\u4ee3\u5668\u548c\u53ef\u8fed\u4ee3\u5bf9\u8c61\u7684\u533a\u522b<\/p>\n<\/p>\n

    \u53ef\u8fed\u4ee3\u5bf9\u8c61\u662f\u6307\u90a3\u4e9b\u5b9e\u73b0\u4e86__iter__()<\/code>\u65b9\u6cd5\u7684\u5bf9\u8c61\uff0c\u5b83\u4eec\u53ef\u4ee5\u4f7f\u7528iter()<\/code>\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u8fed\u4ee3\u5668\u3002\u8fed\u4ee3\u5668\u5bf9\u8c61\u5219\u4e0d\u4ec5\u5b9e\u73b0\u4e86__iter__()<\/code>\u65b9\u6cd5\uff0c\u8fd8\u5b9e\u73b0\u4e86__next__()<\/code>\u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u901a\u8fc7next()<\/code>\u51fd\u6570\u83b7\u53d6\u4e0b\u4e00\u4e2a\u5143\u7d20\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u5217\u8868\u662f\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff0c\u53ef\u4ee5\u901a\u8fc7iter()<\/code>\u51fd\u6570\u5f97\u5230\u4e00\u4e2a\u5217\u8868\u8fed\u4ee3\u5668\uff0c\u800c\u8fd9\u4e2a\u8fed\u4ee3\u5668\u5bf9\u8c61\u5219\u53ef\u4ee5\u4f7f\u7528next()<\/code>\u51fd\u6570\u9010\u4e2a\u83b7\u53d6\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n<\/li>\n

  2. \n

    \u8fed\u4ee3\u5668\u7684\u4f18\u70b9<\/p>\n<\/p>\n

    \u4f7f\u7528\u8fed\u4ee3\u5668\u7684\u4e00\u4e2a\u4e3b\u8981\u4f18\u70b9\u662f\u8282\u7701\u5185\u5b58\u3002\u5bf9\u4e8e\u5927\u578b\u6570\u636e\u96c6\uff0c\u5982\u679c\u4f7f\u7528\u666e\u901a\u7684\u5217\u8868\u6765\u5b58\u50a8\u6240\u6709\u6570\u636e\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5185\u5b58\u8017\u5c3d\u3002\u8fed\u4ee3\u5668\u5219\u53ef\u4ee5\u5728\u9700\u8981\u65f6\u624d\u751f\u6210\u4e0b\u4e00\u4e2a\u5143\u7d20\uff0c\u4ece\u800c\u51cf\u5c11\u5185\u5b58\u5360\u7528\u3002\u6b64\u5916\uff0c\u8fed\u4ee3\u5668\u8fd8\u53ef\u4ee5\u7b80\u5316\u4ee3\u7801\u903b\u8f91\uff0c\u907f\u514d\u663e\u5f0f\u5730\u4f7f\u7528\u7d22\u5f15\u6765\u8bbf\u95ee\u5143\u7d20\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n

    \u4e8c\u3001\u4f7f\u7528iter()<\/code>\u51fd\u6570<\/p>\n<\/p>\n

    iter()<\/code>\u51fd\u6570\u662fPython\u5185\u7f6e\u51fd\u6570\u4e4b\u4e00\uff0c\u7528\u4e8e\u5c06\u53ef\u8fed\u4ee3\u5bf9\u8c61\u8f6c\u6362\u4e3a\u8fed\u4ee3\u5668\u3002\u901a\u8fc7\u8fd9\u4e2a\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u5c06\u5217\u8868\u3001\u5143\u7ec4\u3001\u5b57\u7b26\u4e32\u7b49\u53ef\u8fed\u4ee3\u5bf9\u8c61\u8f6c\u6362\u4e3a\u8fed\u4ee3\u5668\u5bf9\u8c61\uff0c\u4ece\u800c\u8fdb\u884c\u9010\u5143\u7d20\u7684\u904d\u5386\u3002<\/p>\n<\/p>\n

      \n
    1. \n

      iter()<\/code>\u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5<\/p>\n<\/p>\n

      \u8981\u5c06\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\u8f6c\u6362\u4e3a\u8fed\u4ee3\u5668\uff0c\u6211\u4eec\u53ea\u9700\u8981\u5c06\u8be5\u5bf9\u8c61\u4f20\u9012\u7ed9iter()<\/code>\u51fd\u6570\u5373\u53ef\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n

      my_list = [1, 2, 3, 4]<\/p>\n
      my_iterator = iter(my_list)<\/p>\n
      print(next(my_iterator))  # \u8f93\u51fa: 1<\/p>\n
      print(next(my_iterator))  # \u8f93\u51fa: 2<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u521b\u5efa\u4e86\u4e00\u4e2a\u5217\u8868my_list<\/code>\uff0c\u7136\u540e\u901a\u8fc7iter()<\/code>\u51fd\u6570\u5c06\u5176\u8f6c\u6362\u4e3a\u8fed\u4ee3\u5668my_iterator<\/code>\u3002\u968f\u540e\uff0c\u6211\u4eec\u4f7f\u7528next()<\/code>\u51fd\u6570\u9010\u4e2a\u83b7\u53d6\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n<\/li>\n
    2. \n
      iter()<\/code>\u51fd\u6570\u7684\u9ad8\u7ea7\u7528\u6cd5<\/p>\n<\/p>\n
      iter()<\/code>\u51fd\u6570\u8fd8\u53ef\u4ee5\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff1a\u4e00\u4e2a\u53ef\u8c03\u7528\u5bf9\u8c61\u548c\u4e00\u4e2a\u54e8\u5175\u503c\u3002\u5f53\u4f7f\u7528\u8fd9\u79cd\u5f62\u5f0f\u65f6\uff0citer()<\/code>\u4f1a\u4e0d\u65ad\u8c03\u7528\u8be5\u5bf9\u8c61\uff0c\u76f4\u5230\u8fd4\u56de\u503c\u7b49\u4e8e\u54e8\u5175\u503c\u4e3a\u6b62\u3002\u8fd9\u79cd\u7528\u6cd5\u5e38\u7528\u4e8e\u8bfb\u53d6\u6587\u4ef6\u6216\u6d41\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
      with open('data.txt', 'r') as file:<\/p>\n
          for line in iter(file.readline, ''):<\/p>\n
              print(line.strip())<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528iter()<\/code>\u51fd\u6570\u521b\u5efa\u4e86\u4e00\u4e2a\u8fed\u4ee3\u5668\uff0c\u5b83\u4f1a\u4e0d\u65ad\u8c03\u7528file.readline()<\/code>\u65b9\u6cd5\uff0c\u76f4\u5230\u8fd4\u56de\u7a7a\u5b57\u7b26\u4e32\u4e3a\u6b62\u3002\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u7b80\u5316\u8bfb\u53d6\u6587\u4ef6\u7684\u4ee3\u7801\u903b\u8f91\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
      \u4e09\u3001\u4f7f\u7528type()<\/code>\u51fd\u6570<\/p>\n<\/p>\n
      type()<\/code>\u51fd\u6570\u7528\u4e8e\u8fd4\u56de\u5bf9\u8c61\u7684\u7c7b\u578b\u4fe1\u606f\uff0c\u901a\u8fc7\u5b83\u6211\u4eec\u53ef\u4ee5\u5224\u65ad\u4e00\u4e2a\u5bf9\u8c61\u662f\u5426\u4e3a\u8fed\u4ee3\u5668\u6216\u53ef\u8fed\u4ee3\u5bf9\u8c61\u3002\u867d\u7136type()<\/code>\u51fd\u6570\u4e0d\u80fd\u76f4\u63a5\u5224\u65ad\u5bf9\u8c61\u662f\u5426\u4e3a\u8fed\u4ee3\u7c7b\u578b\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u6bd4\u8f83\u8fd4\u56de\u7684\u7c7b\u578b\u6765\u95f4\u63a5\u5b9e\u73b0\u3002<\/p>\n<\/p>\n
        \n
      1. \n
        \u5224\u65ad\u5bf9\u8c61\u7c7b\u578b<\/p>\n<\/p>\n
        \u6211\u4eec\u53ef\u4ee5\u901a\u8fc7type()<\/code>\u51fd\u6570\u83b7\u53d6\u5bf9\u8c61\u7684\u7c7b\u578b\u4fe1\u606f\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
        my_list = [1, 2, 3]<\/p>\n
        print(type(my_list))  # \u8f93\u51fa: <class 'list'><\/p>\n
        <\/code><\/pre>\n<\/p>\n
        \u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u77e5\u9053my_list<\/code>\u662f\u4e00\u4e2a\u5217\u8868\u3002<\/p>\n<\/p>\n<\/li>\n
      2. \n
        \u5224\u65ad\u5bf9\u8c61\u662f\u5426\u4e3a\u8fed\u4ee3\u5668<\/p>\n<\/p>\n
        \u7531\u4e8e\u8fed\u4ee3\u5668\u5b9e\u73b0\u4e86__iter__()<\/code>\u548c__next__()<\/code>\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5224\u65ad\u5bf9\u8c61\u7c7b\u578b\u662f\u5426\u4e3a\u67d0\u4e2a\u5177\u4f53\u7684\u8fed\u4ee3\u5668\u7c7b\u578b\u6765\u5224\u65ad\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u5217\u8868\u8fed\u4ee3\u5668\uff1a<\/p>\n<\/p>\n
        my_list = [1, 2, 3]<\/p>\n
        my_iterator = iter(my_list)<\/p>\n
        print(type(my_iterator))  # \u8f93\u51fa: <class 'list_iterator'><\/p>\n
        <\/code><\/pre>\n<\/p>\n
        \u901a\u8fc7type()<\/code>\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u77e5\u9053my_iterator<\/code>\u662f\u4e00\u4e2a\u5217\u8868\u8fed\u4ee3\u5668\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
        \u56db\u3001\u4f7f\u7528isinstance()<\/code>\u51fd\u6570<\/p>\n<\/p>\n
        isinstance()<\/code>\u51fd\u6570\u7528\u4e8e\u5224\u65ad\u4e00\u4e2a\u5bf9\u8c61\u662f\u5426\u4e3a\u67d0\u79cd\u7c7b\u578b\u6216\u5176\u5b50\u7c7b\uff0c\u901a\u8fc7\u5b83\u6211\u4eec\u53ef\u4ee5\u65b9\u4fbf\u5730\u5224\u65ad\u5bf9\u8c61\u662f\u5426\u4e3a\u8fed\u4ee3\u7c7b\u578b\u3002<\/p>\n<\/p>\n
          \n
        1. \n
          \u5224\u65ad\u5bf9\u8c61\u662f\u5426\u4e3a\u53ef\u8fed\u4ee3\u5bf9\u8c61<\/p>\n<\/p>\n
          Python\u63d0\u4f9b\u4e86collections.abc.Iterable<\/code>\u7c7b\u6765\u8868\u793a\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528isinstance()<\/code>\u51fd\u6570\u6765\u5224\u65ad\u4e00\u4e2a\u5bf9\u8c61\u662f\u5426\u4e3a\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff1a<\/p>\n<\/p>\n
          from collections.abc import Iterable<\/p>\n
          my_list = [1, 2, 3]<\/p>\n
          print(isinstance(my_list, Iterable))  # \u8f93\u51fa: True<\/p>\n
          <\/code><\/pre>\n<\/p>\n
          \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7isinstance()<\/code>\u51fd\u6570\u5224\u65admy_list<\/code>\u662f\u5426\u4e3aIterable<\/code>\u7c7b\u7684\u5b9e\u4f8b\u6216\u5b50\u7c7b\u5b9e\u4f8b\uff0c\u7ed3\u679c\u4e3aTrue<\/code>\uff0c\u8bf4\u660emy_list<\/code>\u662f\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\u3002<\/p>\n<\/p>\n<\/li>\n
        2. \n
          \u5224\u65ad\u5bf9\u8c61\u662f\u5426\u4e3a\u8fed\u4ee3\u5668<\/p>\n<\/p>\n
          \u540c\u6837\u5730\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528collections.abc.Iterator<\/code>\u7c7b\u6765\u5224\u65ad\u4e00\u4e2a\u5bf9\u8c61\u662f\u5426\u4e3a\u8fed\u4ee3\u5668\uff1a<\/p>\n<\/p>\n
          from collections.abc import Iterator<\/p>\n
          my_list = [1, 2, 3]<\/p>\n
          my_iterator = iter(my_list)<\/p>\n
          print(isinstance(my_iterator, Iterator))  # \u8f93\u51fa: True<\/p>\n
          <\/code><\/pre>\n<\/p>\n
          \u901a\u8fc7isinstance()<\/code>\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u5224\u65admy_iterator<\/code>\u662fIterator<\/code>\u7c7b\u7684\u5b9e\u4f8b\u6216\u5b50\u7c7b\u5b9e\u4f8b\uff0c\u7ed3\u679c\u4e3aTrue<\/code>\uff0c\u8bf4\u660emy_iterator<\/code>\u662f\u4e00\u4e2a\u8fed\u4ee3\u5668\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
          \u4e94\u3001\u5e94\u7528\u573a\u666f<\/p>\n<\/p>\n
          \u7406\u89e3\u5982\u4f55\u8f93\u51fa\u8fed\u4ee3\u7c7b\u578b\u5728\u5b9e\u9645\u7f16\u7a0b\u4e2d\u6709\u8bb8\u591a\u5e94\u7528\u573a\u666f\uff0c\u4f8b\u5982\u6570\u636e\u6d41\u5904\u7406\u3001\u5927\u6570\u636e\u5206\u6790\u548c\u5185\u5b58\u4f18\u5316\u7b49\u3002<\/p>\n<\/p>\n
            \n
          1. \n
            \u6570\u636e\u6d41\u5904\u7406<\/p>\n<\/p>\n
            \u5728\u6570\u636e\u6d41\u5904\u7406\u573a\u666f\u4e2d\uff0c\u6570\u636e\u5f80\u5f80\u662f\u4ee5\u6d41\u7684\u5f62\u5f0f\u9010\u6b65\u5230\u8fbe\u7684\uff0c\u4f7f\u7528\u8fed\u4ee3\u5668\u53ef\u4ee5\u907f\u514d\u4e00\u6b21\u6027\u5c06\u6240\u6709\u6570\u636e\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\u3002\u4f8b\u5982\uff0c\u5728\u8bfb\u53d6\u5927\u578b\u65e5\u5fd7\u6587\u4ef6\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u8fed\u4ee3\u5668\u9010\u884c\u8bfb\u53d6\u5e76\u5904\u7406\u6570\u636e\uff0c\u4ece\u800c\u907f\u514d\u5185\u5b58\u6ea2\u51fa\u3002<\/p>\n<\/p>\n<\/li>\n
          2. \n
            \u5927\u6570\u636e\u5206\u6790<\/p>\n<\/p>\n
            \u5728\u5927\u6570\u636e\u5206\u6790\u573a\u666f\u4e2d\uff0c\u6570\u636e\u91cf\u901a\u5e38\u975e\u5e38\u5e9e\u5927\uff0c\u4f7f\u7528\u8fed\u4ee3\u5668\u53ef\u4ee5\u5728\u4e0d\u52a0\u8f7d\u6240\u6709\u6570\u636e\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u5904\u7406\u3002\u4f8b\u5982\uff0c\u5728\u5bf9\u5927\u89c4\u6a21\u6570\u636e\u96c6\u8fdb\u884c\u805a\u5408\u64cd\u4f5c\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u8fed\u4ee3\u5668\u9010\u6279\u6b21\u52a0\u8f7d\u6570\u636e\u8fdb\u884c\u5904\u7406\uff0c\u4ece\u800c\u63d0\u9ad8\u6548\u7387\u548c\u5185\u5b58\u5229\u7528\u7387\u3002<\/p>\n<\/p>\n<\/li>\n
          3. \n
            \u5185\u5b58\u4f18\u5316<\/p>\n<\/p>\n
            \u5728\u5185\u5b58\u6709\u9650\u7684\u73af\u5883\u4e2d\uff0c\u4f7f\u7528\u8fed\u4ee3\u5668\u53ef\u4ee5\u663e\u8457\u964d\u4f4e\u5185\u5b58\u5360\u7528\u3002\u4f8b\u5982\uff0c\u5728\u9700\u8981\u540c\u65f6\u5904\u7406\u591a\u4e2a\u5927\u578b\u6587\u4ef6\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u8fed\u4ee3\u5668\u9010\u4e2a\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u8fdb\u884c\u5904\u7406\uff0c\u4ece\u800c\u907f\u514d\u4e00\u6b21\u6027\u52a0\u8f7d\u6240\u6709\u6587\u4ef6\u7684\u6570\u636e\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
            \u516d\u3001\u603b\u7ed3<\/p>\n<\/p>\n
            \u5728Python\u4e2d\uff0c\u8fed\u4ee3\u7c7b\u578b\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u4e0d\u4ec5\u53ef\u4ee5\u7b80\u5316\u4ee3\u7801\u903b\u8f91\uff0c\u8fd8\u53ef\u4ee5\u5728\u5904\u7406\u5927\u6570\u636e\u96c6\u65f6\u663e\u8457\u964d\u4f4e\u5185\u5b58\u5360\u7528\u3002\u901a\u8fc7iter()<\/code>\u51fd\u6570\u3001type()<\/code>\u51fd\u6570\u548cisinstance()<\/code>\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u65b9\u4fbf\u5730\u5c06\u5bf9\u8c61\u8f6c\u6362\u4e3a\u8fed\u4ee3\u5668\u3001\u83b7\u53d6\u5bf9\u8c61\u7c7b\u578b\u4fe1\u606f\u5e76\u5224\u65ad\u5bf9\u8c61\u662f\u5426\u4e3a\u8fed\u4ee3\u7c7b\u578b\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u7406\u89e3\u548c\u5e94\u7528\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u9ad8\u6548\u5730\u5904\u7406\u6570\u636e\u6d41\u3001\u5927\u6570\u636e\u5206\u6790\u548c\u5185\u5b58\u4f18\u5316\u7b49\u573a\u666f\u3002<\/p>\n<\/p>\n
            \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
             \u5982\u4f55\u5728Python\u4e2d\u8bc6\u522b\u4e0d\u540c\u7684\u8fed\u4ee3\u7c7b\u578b\uff1f<\/strong>
            \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u51fd\u6570type()<\/code>\u6765\u8bc6\u522b\u5bf9\u8c61\u7684\u7c7b\u578b\u3002\u5bf9\u4e8e\u8fed\u4ee3\u5668\uff0c\u53ef\u4ee5\u4f7f\u7528isinstance()<\/code>\u6765\u5224\u65ad\u4e00\u4e2a\u5bf9\u8c61\u662f\u5426\u4e3a\u67d0\u4e2a\u8fed\u4ee3\u7c7b\u578b\uff0c\u4f8b\u5982\u5217\u8868\u3001\u5143\u7ec4\u3001\u5b57\u5178\u6216\u81ea\u5b9a\u4e49\u7684\u8fed\u4ee3\u5668\u3002\u7ed3\u5408iter()<\/code>\u51fd\u6570\uff0c\u53ef\u4ee5\u8f7b\u677e\u5224\u65ad\u4e00\u4e2a\u5bf9\u8c61\u662f\u5426\u53ef\u8fed\u4ee3\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
            my_list = [1, 2, 3]\nprint(isinstance(my_list, Iterable))  # \u8f93\u51faTrue\uff0c\u8868\u793amy_list\u662f\u53ef\u8fed\u4ee3\u7684\n<\/code><\/pre>\n
            \u5982\u4f55\u4f7f\u7528Python\u8f93\u51fa\u8fed\u4ee3\u5668\u7684\u5185\u5bb9\uff1f<\/strong>
            \u8981\u8f93\u51fa\u8fed\u4ee3\u5668\u7684\u5185\u5bb9\uff0c\u53ef\u4ee5\u4f7f\u7528for<\/code>\u5faa\u73af\u904d\u5386\u8fed\u4ee3\u5668\uff0c\u6216\u4f7f\u7528next()<\/code>\u51fd\u6570\u9010\u4e2a\u83b7\u53d6\u5143\u7d20\u3002\u5bf9\u4e8e\u65e0\u6cd5\u76f4\u63a5\u6253\u5370\u7684\u8fed\u4ee3\u5668\uff0c\u53ef\u4ee5\u5148\u5c06\u5176\u8f6c\u6362\u4e3a\u5217\u8868\u6216\u5143\u7ec4\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u8f93\u51fa\u6240\u6709\u5185\u5bb9\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
            my_iter = iter([1, 2, 3])\nfor item in my_iter:\n    print(item)  # \u8f93\u51fa1 2 3\n<\/code><\/pre>\n
            \u6709\u54ea\u4e9b\u5e38\u89c1\u7684\u8fed\u4ee3\u7c7b\u578b\u53ef\u4ee5\u5728Python\u4e2d\u4f7f\u7528\uff1f<\/strong>
            Python\u652f\u6301\u591a\u79cd\u5e38\u89c1\u7684\u8fed\u4ee3\u7c7b\u578b\uff0c\u5305\u62ec\u5217\u8868\u3001\u5143\u7ec4\u3001\u5b57\u5178\u3001\u96c6\u5408\u53ca\u5b57\u7b26\u4e32\u7b49\u3002\u6bcf\u79cd\u7c7b\u578b\u90fd\u6709\u5176\u72ec\u7279\u7684\u7528\u9014\u548c\u6027\u8d28\uff0c\u4e86\u89e3\u8fd9\u4e9b\u7c7b\u578b\u53ef\u4ee5\u5e2e\u52a9\u4f60\u66f4\u9ad8\u6548\u5730\u7f16\u5199\u4ee3\u7801\u3002\u5217\u8868\u548c\u5143\u7ec4\u662f\u6709\u5e8f\u7684\u96c6\u5408\uff0c\u5b57\u5178\u662f\u952e\u503c\u5bf9\u96c6\u5408\uff0c\u96c6\u5408\u5219\u662f\u65e0\u5e8f\u7684\u4e14\u4e0d\u91cd\u590d\u7684\u5143\u7d20\u96c6\u5408\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u8f93\u51fa\u8fed\u4ee3\u7c7b\u578b\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528iter()\u51fd\u6570\u5c06\u5bf9\u8c61\u8f6c\u6362\u4e3a\u8fed\u4ee3\u5668\u3001\u4f7f\u7528type()\u67e5\u770b\u5bf9\u8c61\u7c7b\u578b\u3001\u4ee5\u53ca\u901a […]","protected":false},"author":3,"featured_media":956391,"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\/956384"}],"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=956384"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/956384\/revisions"}],"predecessor-version":[{"id":956393,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/956384\/revisions\/956393"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/956391"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=956384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=956384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=956384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}