{"id":973368,"date":"2024-12-27T05:56:23","date_gmt":"2024-12-26T21:56:23","guid":{"rendered":""},"modified":"2024-12-27T05:56:26","modified_gmt":"2024-12-26T21:56:26","slug":"python%e8%bf%ad%e4%bb%a3%e5%99%a8%e5%a6%82%e4%bd%95%e6%89%a7%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/973368.html","title":{"rendered":"python\u8fed\u4ee3\u5668\u5982\u4f55\u6267\u884c"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24195557\/93a11298-5e77-44c2-9924-cef1df9c148f.webp\" alt=\"python\u8fed\u4ee3\u5668\u5982\u4f55\u6267\u884c\" \/><\/p>\n<p><p> <strong>Python\u8fed\u4ee3\u5668\u7684\u6267\u884c\u662f\u901a\u8fc7\u5b9e\u73b0<code>__iter__()<\/code>\u548c<code>__next__()<\/code>\u65b9\u6cd5\u6765\u5b8c\u6210\u7684\u3001\u901a\u8fc7\u8c03\u7528\u5185\u7f6e\u51fd\u6570<code>iter()<\/code>\u548c<code>next()<\/code>\u8fdb\u884c\u8fed\u4ee3\u3001\u8fed\u4ee3\u5668\u7528\u4e8e\u4ece\u96c6\u5408\u4e2d\u9010\u4e00\u63d0\u53d6\u5143\u7d20\uff0c\u907f\u514d\u4e86\u4e00\u6b21\u6027\u52a0\u8f7d\u6574\u4e2a\u96c6\u5408\u5230\u5185\u5b58\u4e2d\uff0c\u8fd9\u63d0\u9ad8\u4e86\u5185\u5b58\u6548\u7387\u548c\u7a0b\u5e8f\u7684\u54cd\u5e94\u901f\u5ea6\u3002<\/strong>Python\u8fed\u4ee3\u5668\u7684\u6838\u5fc3\u5728\u4e8e\u5176\u60f0\u6027\u6c42\u503c\u7684\u7279\u6027\uff0c\u5373\u5728\u9700\u8981\u65f6\u624d\u4f1a\u8ba1\u7b97\u4e0b\u4e00\u4e2a\u503c\uff0c\u8fd9\u4f7f\u5f97\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\u6216\u8005\u65e0\u7a77\u5e8f\u5217\u6210\u4e3a\u53ef\u80fd\u3002\u901a\u8fc7\u5b9e\u73b0<code>__iter__()<\/code>\u65b9\u6cd5\uff0c\u8fed\u4ee3\u5668\u5bf9\u8c61\u8868\u660e\u81ea\u5df1\u662f\u53ef\u4ee5\u8fed\u4ee3\u7684\uff0c\u800c<code>__next__()<\/code>\u65b9\u6cd5\u5219\u8d1f\u8d23\u8fd4\u56de\u8fed\u4ee3\u4e2d\u7684\u4e0b\u4e00\u4e2a\u503c\uff0c\u76f4\u5230\u6ca1\u6709\u5143\u7d20\u53ef\u4f9b\u8fd4\u56de\u65f6\u629b\u51fa<code>StopIteration<\/code>\u5f02\u5e38\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001\u8fed\u4ee3\u5668\u7684\u57fa\u672c\u6982\u5ff5<\/p>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u8fed\u4ee3\u5668\u662f\u4e00\u4e2a\u9075\u5faa\u7279\u5b9a\u534f\u8bae\u7684\u5bf9\u8c61\uff0c\u5b83\u5141\u8bb8\u7a0b\u5e8f\u5458\u904d\u5386\u4e00\u4e2a\u5bb9\u5668\uff08\u5982\u5217\u8868\u3001\u5143\u7ec4\u7b49\uff09\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u800c\u65e0\u9700\u66b4\u9732\u5176\u5e95\u5c42\u7684\u5b9e\u73b0\u7ec6\u8282\u3002\u8fed\u4ee3\u5668\u7684\u4e3b\u8981\u76ee\u7684\u662f\u63d0\u4f9b\u4e00\u79cd\u7edf\u4e00\u7684\u65b9\u5f0f\u6765\u8bbf\u95ee\u4e0d\u540c\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>\u8fed\u4ee3\u5668\u534f\u8bae<\/strong><\/li>\n<\/ol>\n<p><p>\u8fed\u4ee3\u5668\u534f\u8bae\u662fPython\u4e2d\u7528\u6765\u5b9a\u4e49\u53ef\u8fed\u4ee3\u5bf9\u8c61\u7684\u6807\u51c6\u3002\u4e00\u4e2a\u5bf9\u8c61\u8981\u6210\u4e3a\u8fed\u4ee3\u5668\uff0c\u5fc5\u987b\u5b9e\u73b0\u4e24\u4e2a\u7279\u6b8a\u65b9\u6cd5\uff1a<code>__iter__()<\/code>\u548c<code>__next__()<\/code>\u3002<\/p>\n<\/p>\n<ul>\n<li>\n<p><code>__iter__()<\/code>\uff1a\u8be5\u65b9\u6cd5\u5e94\u8fd4\u56de\u8fed\u4ee3\u5668\u5bf9\u8c61\u81ea\u8eab\u3002\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c<code>__iter__()<\/code>\u65b9\u6cd5\u4f1a\u7b80\u5355\u8fd4\u56de<code>self<\/code>\u3002<\/p>\n<\/p>\n<\/li>\n<li>\n<p><code>__next__()<\/code>\uff1a\u8be5\u65b9\u6cd5\u8fd4\u56de\u5bb9\u5668\u4e2d\u7684\u4e0b\u4e00\u4e2a\u5143\u7d20\u3002\u5982\u679c\u6ca1\u6709\u66f4\u591a\u7684\u5143\u7d20\u53ef\u4f9b\u8fd4\u56de\uff0c\u8be5\u65b9\u6cd5\u5e94\u8be5\u629b\u51fa<code>StopIteration<\/code>\u5f02\u5e38\u3002<\/p>\n<\/p>\n<\/li>\n<\/ul>\n<ol start=\"2\">\n<li><strong>\u5982\u4f55\u521b\u5efa\u8fed\u4ee3\u5668<\/strong><\/li>\n<\/ol>\n<p><p>\u8981\u521b\u5efa\u4e00\u4e2a\u8fed\u4ee3\u5668\uff0c\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u7c7b\uff0c\u5e76\u5728\u8fd9\u4e2a\u7c7b\u4e2d\u5b9e\u73b0<code>__iter__()<\/code>\u548c<code>__next__()<\/code>\u65b9\u6cd5\u3002\u5982\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">class MyIterator:<\/p>\n<p>    def __init__(self, data):<\/p>\n<p>        self.data = data<\/p>\n<p>        self.index = 0<\/p>\n<p>    def __iter__(self):<\/p>\n<p>        return self<\/p>\n<p>    def __next__(self):<\/p>\n<p>        if self.index &lt; len(self.data):<\/p>\n<p>            result = self.data[self.index]<\/p>\n<p>            self.index += 1<\/p>\n<p>            return result<\/p>\n<p>        else:<\/p>\n<p>            r<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>se StopIteration<\/p>\n<h2><strong>\u4f7f\u7528\u8fed\u4ee3\u5668<\/strong><\/h2>\n<p>my_iter = MyIterator([1, 2, 3, 4])<\/p>\n<p>for item in my_iter:<\/p>\n<p>    print(item)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u4e8c\u3001\u8fed\u4ee3\u5668\u7684\u4f18\u70b9<\/p>\n<\/p>\n<ol>\n<li><strong>\u8282\u7701\u5185\u5b58<\/strong><\/li>\n<\/ol>\n<p><p>\u8fed\u4ee3\u5668\u901a\u8fc7\u60f0\u6027\u6c42\u503c\uff0c\u53ea\u5728\u9700\u8981\u65f6\u751f\u6210\u4e0b\u4e00\u4e2a\u5143\u7d20\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u4eec\u4e0d\u9700\u8981\u5728\u5185\u5b58\u4e2d\u5b58\u50a8\u6574\u4e2a\u96c6\u5408\u3002\u56e0\u6b64\uff0c\u8fed\u4ee3\u5668\u5728\u5904\u7406\u5927\u91cf\u6570\u636e\u65f6\u7279\u522b\u6709\u7528\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u63d0\u9ad8\u7a0b\u5e8f\u7684\u7075\u6d3b\u6027<\/strong><\/li>\n<\/ol>\n<p><p>\u8fed\u4ee3\u5668\u5141\u8bb8\u5728\u904d\u5386\u6570\u636e\u65f6\u5bf9\u5176\u8fdb\u884c\u5904\u7406\u6216\u53d8\u6362\uff0c\u800c\u4e0d\u5fc5\u9884\u5148\u52a0\u8f7d\u6240\u6709\u6570\u636e\u3002\u8fd9\u4f7f\u5f97\u7a0b\u5e8f\u66f4\u5177\u7075\u6d3b\u6027\uff0c\u80fd\u591f\u5904\u7406\u52a8\u6001\u6570\u636e\u6d41\u3002<\/p>\n<\/p>\n<ol start=\"3\">\n<li><strong>\u652f\u6301\u65e0\u7a77\u5e8f\u5217<\/strong><\/li>\n<\/ol>\n<p><p>\u7531\u4e8e\u8fed\u4ee3\u5668\u53ea\u5728\u9700\u8981\u65f6\u751f\u6210\u5143\u7d20\uff0c\u56e0\u6b64\u5b83\u4eec\u53ef\u4ee5\u7528\u4e8e\u8868\u793a\u65e0\u7a77\u5e8f\u5217\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u8fed\u4ee3\u5668\u751f\u6210\u4e00\u4e2a\u65e0\u9650\u7684\u6590\u6ce2\u90a3\u5951\u6570\u5217\u3002<\/p>\n<\/p>\n<p><p>\u4e09\u3001\u8fed\u4ee3\u5668\u4e0e\u751f\u6210\u5668\u7684\u5173\u7cfb<\/p>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u751f\u6210\u5668\u662f\u4e00\u79cd\u7279\u6b8a\u7c7b\u578b\u7684\u8fed\u4ee3\u5668\u3002\u751f\u6210\u5668\u901a\u8fc7\u4f7f\u7528<code>yield<\/code>\u5173\u952e\u5b57\u6765\u751f\u6210\u503c\uff0c\u800c\u4e0d\u662f\u50cf\u8fed\u4ee3\u5668\u90a3\u6837\u663e\u5f0f\u5b9e\u73b0<code>__iter__()<\/code>\u548c<code>__next__()<\/code>\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>\u751f\u6210\u5668\u7684\u5b9a\u4e49<\/strong><\/li>\n<\/ol>\n<p><p>\u751f\u6210\u5668\u51fd\u6570\u4e0e\u666e\u901a\u51fd\u6570\u4e0d\u540c\uff0c\u5b83\u4f7f\u7528<code>yield<\/code>\u8bed\u53e5\u8fd4\u56de\u503c\uff0c\u5e76\u5728\u6bcf\u6b21\u8c03\u7528\u65f6\u8bb0\u4f4f\u5176\u72b6\u6001\uff0c\u4ee5\u4fbf\u4e0b\u6b21\u4ece\u4e2d\u65ad\u7684\u4f4d\u7f6e\u7ee7\u7eed\u6267\u884c\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def my_generator():<\/p>\n<p>    yield 1<\/p>\n<p>    yield 2<\/p>\n<p>    yield 3<\/p>\n<h2><strong>\u4f7f\u7528\u751f\u6210\u5668<\/strong><\/h2>\n<p>for value in my_generator():<\/p>\n<p>    print(value)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u751f\u6210\u5668\u7684\u4f18\u70b9<\/strong><\/li>\n<\/ol>\n<p><p>\u751f\u6210\u5668\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u7b80\u5355\u7684\u8fed\u4ee3\u5668\u521b\u5efa\u65b9\u5f0f\uff0c\u56e0\u4e3a\u5b83\u4eec\u81ea\u52a8\u5b9e\u73b0\u4e86\u8fed\u4ee3\u5668\u534f\u8bae\u3002\u751f\u6210\u5668\u51fd\u6570\u7684\u4ee3\u7801\u901a\u5e38\u66f4\u7b80\u6d01\uff0c\u5e76\u4e14\u66f4\u5bb9\u6613\u7406\u89e3\u3002<\/p>\n<\/p>\n<p><p>\u56db\u3001\u8fed\u4ee3\u5668\u7684\u5b9e\u9645\u5e94\u7528<\/p>\n<\/p>\n<p><p>\u8fed\u4ee3\u5668\u5728\u5b9e\u9645\u7f16\u7a0b\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u5904\u7406\u5927\u6570\u636e\u96c6\u6216\u6d41\u5f0f\u6570\u636e\u65f6\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>\u6587\u4ef6\u5904\u7406<\/strong><\/li>\n<\/ol>\n<p><p>\u5728\u5904\u7406\u5927\u578b\u6587\u4ef6\u65f6\uff0c\u8fed\u4ee3\u5668\u53ef\u4ee5\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\uff0c\u800c\u4e0d\u662f\u4e00\u6b21\u6027\u5c06\u6574\u4e2a\u6587\u4ef6\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def file_line_iterator(file_path):<\/p>\n<p>    with open(file_path, &#39;r&#39;) as file:<\/p>\n<p>        for line in file:<\/p>\n<p>            yield line.strip()<\/p>\n<h2><strong>\u4f7f\u7528\u6587\u4ef6\u8fed\u4ee3\u5668<\/strong><\/h2>\n<p>for line in file_line_iterator(&#39;large_file.txt&#39;):<\/p>\n<p>    print(line)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u6570\u636e\u6d41\u5904\u7406<\/strong><\/li>\n<\/ol>\n<p><p>\u5728\u5b9e\u65f6\u6570\u636e\u6d41\u5904\u7406\u4e2d\uff0c\u8fed\u4ee3\u5668\u53ef\u4ee5\u7528\u4e8e\u9010\u4e2a\u5904\u7406\u6570\u636e\u5757\uff0c\u800c\u4e0d\u662f\u7b49\u5f85\u6240\u6709\u6570\u636e\u5230\u8fbe\u540e\u518d\u5904\u7406\u3002\u8fd9\u6837\u53ef\u4ee5\u63d0\u9ad8\u7a0b\u5e8f\u7684\u54cd\u5e94\u901f\u5ea6\u3002<\/p>\n<\/p>\n<ol start=\"3\">\n<li><strong>\u7ec4\u5408\u8fed\u4ee3\u5668<\/strong><\/li>\n<\/ol>\n<p><p>\u53ef\u4ee5\u4f7f\u7528<code>itertools<\/code>\u6a21\u5757\u4e2d\u7684\u5de5\u5177\u6765\u7ec4\u5408\u8fed\u4ee3\u5668\u3002\u8fd9\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u529f\u80fd\u6765\u6784\u5efa\u590d\u6742\u7684\u6570\u636e\u5904\u7406\u7ba1\u9053\u3002\u4f8b\u5982\uff0c<code>itertools.chain()<\/code>\u53ef\u4ee5\u5c06\u591a\u4e2a\u8fed\u4ee3\u5668\u8fde\u63a5\u5728\u4e00\u8d77\uff0c\u800c<code>itertools.islice()<\/code>\u53ef\u4ee5\u5bf9\u8fed\u4ee3\u5668\u8fdb\u884c\u5207\u7247\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<p><p>\u4e94\u3001\u4f7f\u7528\u5185\u7f6e\u51fd\u6570\u4e0e\u8fed\u4ee3\u5668\u7ed3\u5408<\/p>\n<\/p>\n<p><p>Python\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5185\u7f6e\u51fd\u6570\u53ef\u4ee5\u4e0e\u8fed\u4ee3\u5668\u7ed3\u5408\u4f7f\u7528\uff0c\u4ee5\u5b9e\u73b0\u66f4\u590d\u6742\u7684\u64cd\u4f5c\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>map()\u51fd\u6570<\/strong><\/li>\n<\/ol>\n<p><p><code>map()<\/code>\u51fd\u6570\u53ef\u4ee5\u5c06\u4e00\u4e2a\u51fd\u6570\u5e94\u7528\u5230\u4e00\u4e2a\u6216\u591a\u4e2a\u8fed\u4ee3\u5668\u7684\u6bcf\u4e2a\u5143\u7d20\u4e0a\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">numbers = [1, 2, 3, 4]<\/p>\n<p>squared = map(lambda x: x2, numbers)<\/p>\n<p>for number in squared:<\/p>\n<p>    print(number)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"2\">\n<li><strong>filter()\u51fd\u6570<\/strong><\/li>\n<\/ol>\n<p><p><code>filter()<\/code>\u51fd\u6570\u7528\u4e8e\u8fc7\u6ee4\u6389\u4e0d\u7b26\u5408\u6761\u4ef6\u7684\u5143\u7d20\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">numbers = [1, 2, 3, 4, 5]<\/p>\n<p>even_numbers = filter(lambda x: x % 2 == 0, numbers)<\/p>\n<p>for number in even_numbers:<\/p>\n<p>    print(number)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ol start=\"3\">\n<li><strong>zip()\u51fd\u6570<\/strong><\/li>\n<\/ol>\n<p><p><code>zip()<\/code>\u51fd\u6570\u7528\u4e8e\u5c06\u591a\u4e2a\u8fed\u4ee3\u5668\u201c\u7f1d\u5408\u201d\u5728\u4e00\u8d77\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">names = [&#39;Alice&#39;, &#39;Bob&#39;, &#39;Charlie&#39;]<\/p>\n<p>ages = [25, 30, 35]<\/p>\n<p>for name, age in zip(names, ages):<\/p>\n<p>    print(f&#39;{name} is {age} years old.&#39;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u516d\u3001\u8fed\u4ee3\u5668\u7684\u5c40\u9650\u6027<\/p>\n<\/p>\n<p><p>\u5c3d\u7ba1\u8fed\u4ee3\u5668\u6709\u8bb8\u591a\u4f18\u70b9\uff0c\u4f46\u5b83\u4eec\u4e5f\u5b58\u5728\u4e00\u4e9b\u5c40\u9650\u6027\u3002<\/p>\n<\/p>\n<ol>\n<li><strong>\u4e00\u6b21\u6027\u4f7f\u7528<\/strong><\/li>\n<\/ol>\n<p><p>\u8fed\u4ee3\u5668\u662f\u4e00\u6b21\u6027\u4f7f\u7528\u7684\u5bf9\u8c61\uff0c\u610f\u5473\u7740\u4e00\u65e6\u904d\u5386\u5b8c\uff0c\u5c31\u4e0d\u80fd\u518d\u6b21\u904d\u5386\u3002\u9700\u8981\u91cd\u65b0\u521b\u5efa\u8fed\u4ee3\u5668\u5bf9\u8c61\u624d\u80fd\u518d\u6b21\u904d\u5386\u540c\u4e00\u96c6\u5408\u3002<\/p>\n<\/p>\n<ol start=\"2\">\n<li><strong>\u6709\u9650\u7684\u7075\u6d3b\u6027<\/strong><\/li>\n<\/ol>\n<p><p>\u4e0e\u968f\u673a\u8bbf\u95ee\u6570\u636e\u7ed3\u6784\uff08\u5982\u5217\u8868\uff09\u76f8\u6bd4\uff0c\u8fed\u4ee3\u5668\u53ea\u80fd\u987a\u5e8f\u8bbf\u95ee\u5143\u7d20\uff0c\u4e0d\u80fd\u8fdb\u884c\u53cd\u5411\u904d\u5386\u6216\u968f\u673a\u8bbf\u95ee\u3002<\/p>\n<\/p>\n<ol start=\"3\">\n<li><strong>\u8c03\u8bd5\u56f0\u96be<\/strong><\/li>\n<\/ol>\n<p><p>\u7531\u4e8e\u8fed\u4ee3\u5668\u662f\u60f0\u6027\u6c42\u503c\u7684\uff0c\u8c03\u8bd5\u65f6\u53ef\u80fd\u96be\u4ee5\u8ffd\u8e2a\u8fed\u4ee3\u5668\u7684\u72b6\u6001\u548c\u4f4d\u7f6e\u3002<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u7406\u89e3\u548c\u5e94\u7528\u8fed\u4ee3\u5668\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u7f16\u5199\u66f4\u9ad8\u6548\u3001\u66f4\u7075\u6d3b\u7684Python\u4ee3\u7801\uff0c\u5c24\u5176\u662f\u5728\u5904\u7406\u5927\u91cf\u6570\u636e\u65f6\u3002\u8fed\u4ee3\u5668\u4e0d\u4ec5\u8282\u7701\u5185\u5b58\u8d44\u6e90\uff0c\u8fd8\u80fd\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\uff0c\u662fPython\u7f16\u7a0b\u4e2d\u4e00\u4e2a\u91cd\u8981\u7684\u5de5\u5177\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u4ec0\u4e48\u662fPython\u4e2d\u7684\u8fed\u4ee3\u5668\uff1f<\/strong><br \/>Python\u4e2d\u7684\u8fed\u4ee3\u5668\u662f\u4e00\u79cd\u5bf9\u8c61\uff0c\u5b83\u5b9e\u73b0\u4e86\u8fed\u4ee3\u534f\u8bae\uff0c\u5305\u542b<code>__iter__()<\/code>\u548c<code>__next__()<\/code>\u65b9\u6cd5\u3002\u8fed\u4ee3\u5668\u5141\u8bb8\u4f60\u9010\u4e2a\u8bbf\u95ee\u96c6\u5408\u4e2d\u7684\u5143\u7d20\uff0c\u800c\u4e0d\u9700\u8981\u4f7f\u7528\u7d22\u5f15\u3002\u901a\u8fc7\u8fed\u4ee3\u5668\uff0c\u4f60\u53ef\u4ee5\u5728\u5faa\u73af\u4e2d\u65b9\u4fbf\u5730\u904d\u5386\u5217\u8868\u3001\u5143\u7ec4\u3001\u5b57\u5178\u7b49\u6570\u636e\u7ed3\u6784\u3002<\/p>\n<p><strong>\u5982\u4f55\u521b\u5efa\u81ea\u5b9a\u4e49\u7684\u8fed\u4ee3\u5668\uff1f<\/strong><br \/>\u8981\u521b\u5efa\u81ea\u5b9a\u4e49\u8fed\u4ee3\u5668\uff0c\u9700\u8981\u5b9a\u4e49\u4e00\u4e2a\u7c7b\uff0c\u5e76\u5728\u5176\u4e2d\u5b9e\u73b0<code>__iter__()<\/code>\u548c<code>__next__()<\/code>\u65b9\u6cd5\u3002<code>__iter__()<\/code>\u65b9\u6cd5\u8fd4\u56de\u8fed\u4ee3\u5668\u5bf9\u8c61\u672c\u8eab\uff0c\u800c<code>__next__()<\/code>\u65b9\u6cd5\u8fd4\u56de\u4e0b\u4e00\u4e2a\u5143\u7d20\u3002\u5982\u679c\u6ca1\u6709\u66f4\u591a\u5143\u7d20\u53ef\u4f9b\u8fd4\u56de\uff0c<code>__next__()<\/code>\u65b9\u6cd5\u5e94\u5f15\u53d1<code>StopIteration<\/code>\u5f02\u5e38\u3002\u8fd9\u6837\uff0cPython\u7684\u8fed\u4ee3\u673a\u5236\u5c31\u80fd\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n<p><strong>\u4f7f\u7528Python\u8fed\u4ee3\u5668\u7684\u4f18\u52bf\u662f\u4ec0\u4e48\uff1f<\/strong><br \/>\u4f7f\u7528Python\u8fed\u4ee3\u5668\u7684\u4e00\u4e2a\u4e3b\u8981\u4f18\u52bf\u662f\u5185\u5b58\u6548\u7387\u3002\u8fed\u4ee3\u5668\u6309\u9700\u751f\u6210\u503c\uff0c\u907f\u514d\u4e86\u5c06\u6574\u4e2a\u6570\u636e\u96c6\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\u7684\u9700\u8981\u3002\u8fd9\u5bf9\u4e8e\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\u5c24\u4e3a\u91cd\u8981\u3002\u6b64\u5916\uff0c\u8fed\u4ee3\u5668\u63d0\u4f9b\u4e86\u4e00\u79cd\u7edf\u4e00\u7684\u65b9\u5f0f\u6765\u904d\u5386\u4e0d\u540c\u7684\u6570\u636e\u7ed3\u6784\uff0c\u7b80\u5316\u4e86\u4ee3\u7801\u7684\u590d\u6742\u6027\uff0c\u4f7f\u5f97\u4ee3\u7801\u66f4\u5177\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u8fed\u4ee3\u5668\u7684\u6267\u884c\u662f\u901a\u8fc7\u5b9e\u73b0__iter__()\u548c__next__()\u65b9\u6cd5\u6765\u5b8c\u6210\u7684\u3001\u901a\u8fc7\u8c03\u7528\u5185\u7f6e\u51fd\u6570it [&hellip;]","protected":false},"author":3,"featured_media":973375,"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\/973368"}],"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=973368"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/973368\/revisions"}],"predecessor-version":[{"id":973376,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/973368\/revisions\/973376"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/973375"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=973368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=973368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=973368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}