{"id":1184453,"date":"2025-01-15T19:26:38","date_gmt":"2025-01-15T11:26:38","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1184453.html"},"modified":"2025-01-15T19:26:41","modified_gmt":"2025-01-15T11:26:41","slug":"python%e4%b8%ad%e5%a6%82%e4%bd%95%e5%88%a0%e9%99%a4%e6%89%80%e6%9c%89%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1184453.html","title":{"rendered":"python\u4e2d\u5982\u4f55\u5220\u9664\u6240\u6709\u5143\u7d20"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25133911\/050b19c4-f4d9-4551-8fb2-c02cb3611da2.webp\" alt=\"python\u4e2d\u5982\u4f55\u5220\u9664\u6240\u6709\u5143\u7d20\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\uff0c\u5220\u9664\u6240\u6709\u5143\u7d20\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528clear()\u65b9\u6cd5\u3001\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u3001\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5404\u6709\u4f18\u52a3\uff0c\u5177\u4f53\u4f7f\u7528\u53d6\u51b3\u4e8e\u573a\u666f\u548c\u9700\u6c42\u3002<\/strong>\u5176\u4e2d\uff0c<strong>clear()\u65b9\u6cd5<\/strong>\u662f\u6700\u5e38\u7528\u4e14\u9ad8\u6548\u7684\u65b9\u5f0f\u3002<\/p>\n<\/p>\n<p><p><strong>clear()\u65b9\u6cd5<\/strong>\uff1a\u8fd9\u662f\u5220\u9664\u5217\u8868\u4e2d\u6240\u6709\u5143\u7d20\u7684\u6700\u76f4\u63a5\u548c\u5e38\u7528\u7684\u65b9\u6cd5\u3002clear()\u65b9\u6cd5\u4e0d\u4ec5\u7b80\u6d01\uff0c\u800c\u4e14\u6267\u884c\u901f\u5ea6\u5feb\uff0c\u56e0\u4e3a\u5b83\u662f\u4e13\u95e8\u4e3a\u6e05\u7a7a\u5217\u8868\u8bbe\u8ba1\u7684\u5185\u5efa\u65b9\u6cd5\u3002\u4f7f\u7528\u6b64\u65b9\u6cd5\u65f6\uff0c\u5217\u8868\u5bf9\u8c61\u4fdd\u6301\u4e0d\u53d8\uff0c\u53ea\u662f\u5185\u5bb9\u88ab\u6e05\u7a7a\uff0c\u56e0\u6b64\u4e0d\u4f1a\u6d89\u53ca\u5230\u5185\u5b58\u7684\u91cd\u65b0\u5206\u914d\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [1, 2, 3, 4, 5]<\/p>\n<p>my_list.clear()<\/p>\n<p>print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u4f1a\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u63a2\u8ba8\u5b83\u4eec\u5728\u4e0d\u540c\u573a\u666f\u4e0b\u7684\u5e94\u7528\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001clear()\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p>clear()\u65b9\u6cd5\u662fPython\u5185\u5efa\u7684\u5217\u8868\u65b9\u6cd5\uff0c\u7528\u4e8e\u5220\u9664\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\u3002\u5b83\u7684\u4f18\u52bf\u5728\u4e8e\u7b80\u6d01\u548c\u9ad8\u6548\uff0c\u80fd\u591f\u76f4\u63a5\u6e05\u7a7a\u5217\u8868\u800c\u4e0d\u6539\u53d8\u5217\u8868\u5bf9\u8c61\u672c\u8eab\u3002<\/p>\n<\/p>\n<p><p><strong>\u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [1, 2, 3, 4, 5]<\/p>\n<p>my_list.clear()<\/p>\n<p>print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u4e2a\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u4e0d\u9700\u8981\u521b\u5efa\u65b0\u7684\u5217\u8868\u5bf9\u8c61\uff0c\u800c\u662f\u76f4\u63a5\u6e05\u7a7a\u73b0\u6709\u5217\u8868\u7684\u5185\u5bb9\uff0c\u56e0\u6b64\u5728\u5185\u5b58\u7ba1\u7406\u4e0a\u66f4\u4e3a\u9ad8\u6548\u3002<\/p>\n<\/p>\n<p><p><strong>\u5e94\u7528\u573a\u666f\uff1a<\/strong><\/p>\n<\/p>\n<p><p>clear()\u65b9\u6cd5\u9002\u7528\u4e8e\u9700\u8981\u9891\u7e41\u6e05\u7a7a\u5217\u8868\u5e76\u91cd\u65b0\u586b\u5145\u6570\u636e\u7684\u573a\u666f\uff0c\u4f8b\u5982\u5728\u6570\u636e\u5904\u7406\u3001\u7f13\u5b58\u7ba1\u7406\u7b49\u9700\u8981\u53cd\u590d\u4f7f\u7528\u540c\u4e00\u5217\u8868\u5bf9\u8c61\u7684\u60c5\u51b5\u4e0b\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868<\/h3>\n<\/p>\n<p><p>\u53e6\u4e00\u79cd\u6e05\u7a7a\u5217\u8868\u7684\u65b9\u6cd5\u662f\u5c06\u5176\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u3002\u8fd9\u79cd\u65b9\u6cd5\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7a7a\u5217\u8868\uff0c\u5e76\u5c06\u5176\u5206\u914d\u7ed9\u539f\u59cb\u5217\u8868\u53d8\u91cf\u3002<\/p>\n<\/p>\n<p><p><strong>\u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [1, 2, 3, 4, 5]<\/p>\n<p>my_list = []<\/p>\n<p>print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u5728\u4e8e\u7b80\u5355\u6613\u61c2\uff0c\u4f46\u7f3a\u70b9\u662f\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u5bf9\u8c61\uff0c\u539f\u59cb\u5217\u8868\u5bf9\u8c61\u5c06\u4f1a\u88ab\u5783\u573e\u56de\u6536\u673a\u5236\u56de\u6536\u3002<\/p>\n<\/p>\n<p><p><strong>\u5e94\u7528\u573a\u666f\uff1a<\/strong><\/p>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u4e0d\u518d\u9700\u8981\u4fdd\u7559\u539f\u59cb\u5217\u8868\u5bf9\u8c61\u7684\u60c5\u51b5\uff0c\u4f8b\u5982\u5728\u51fd\u6570\u5185\u90e8\u4f7f\u7528\u4e34\u65f6\u5217\u8868\uff0c\u51fd\u6570\u7ed3\u675f\u540e\u4e0d\u518d\u9700\u8981\u4fdd\u7559\u8be5\u5217\u8868\u65f6\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u5207\u7247\u64cd\u4f5c<\/h3>\n<\/p>\n<p><p>\u5207\u7247\u64cd\u4f5c\u4e5f\u662f\u4e00\u79cd\u6e05\u7a7a\u5217\u8868\u7684\u65b9\u6cd5\uff0c\u901a\u8fc7\u5c06\u5217\u8868\u7684\u6240\u6709\u5143\u7d20\u5207\u7247\u5220\u9664\u6765\u5b9e\u73b0\u3002<\/p>\n<\/p>\n<p><p><strong>\u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [1, 2, 3, 4, 5]<\/p>\n<p>del my_list[:]<\/p>\n<p>print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u4e0d\u4f1a\u6539\u53d8\u5217\u8868\u5bf9\u8c61\u672c\u8eab\uff0c\u4f46\u4e0eclear()\u65b9\u6cd5\u76f8\u6bd4\uff0c\u4ee3\u7801\u7a0d\u663e\u590d\u6742\u3002<\/p>\n<\/p>\n<p><p><strong>\u5e94\u7528\u573a\u666f\uff1a<\/strong><\/p>\n<\/p>\n<p><p>\u5207\u7247\u64cd\u4f5c\u9002\u7528\u4e8e\u9700\u8981\u4fdd\u7559\u5217\u8868\u5bf9\u8c61\u5e76\u4e14\u5bf9\u4ee3\u7801\u590d\u6742\u5ea6\u8981\u6c42\u4e0d\u9ad8\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u5faa\u73af\u5220\u9664\u5143\u7d20<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528\u5faa\u73af\u9010\u4e2a\u5220\u9664\u5217\u8868\u4e2d\u7684\u5143\u7d20\u4e5f\u662f\u4e00\u79cd\u65b9\u6cd5\uff0c\u4e0d\u8fc7\u8fd9\u79cd\u65b9\u6cd5\u6548\u7387\u8f83\u4f4e\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528\u3002<\/p>\n<\/p>\n<p><p><strong>\u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [1, 2, 3, 4, 5]<\/p>\n<p>while my_list:<\/p>\n<p>    my_list.pop()<\/p>\n<p>print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u7f3a\u70b9\u5728\u4e8e\u64cd\u4f5c\u590d\u6742\u4e14\u6548\u7387\u4f4e\u4e0b\uff0c\u56e0\u4e3a\u6bcf\u6b21\u5220\u9664\u5143\u7d20\u65f6\u5217\u8868\u9700\u8981\u91cd\u65b0\u8c03\u6574\u3002<\/p>\n<\/p>\n<p><p><strong>\u5e94\u7528\u573a\u666f\uff1a<\/strong><\/p>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u4e00\u822c\u4e0d\u5efa\u8bae\u4f7f\u7528\uff0c\u4ec5\u5728\u7279\u6b8a\u60c5\u51b5\u4e0b\u6216\u5b66\u4e60\u76ee\u7684\u65f6\u4f7f\u7528\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001\u5217\u8868\u751f\u6210\u5f0f<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528\u5217\u8868\u751f\u6210\u5f0f\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7a7a\u5217\u8868\uff0c\u4ece\u800c\u8fbe\u5230\u6e05\u7a7a\u5217\u8868\u7684\u76ee\u7684\u3002<\/p>\n<\/p>\n<p><p><strong>\u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [1, 2, 3, 4, 5]<\/p>\n<p>my_list = [x for x in []]<\/p>\n<p>print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u5728\u4e8e\u8bed\u6cd5\u7b80\u6d01\uff0c\u4f46\u4e0e\u76f4\u63a5\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u76f8\u6bd4\uff0c\u6ca1\u6709\u660e\u663e\u4f18\u52bf\u3002<\/p>\n<\/p>\n<p><p><strong>\u5e94\u7528\u573a\u666f\uff1a<\/strong><\/p>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u4e00\u822c\u4e0d\u63a8\u8350\u4f7f\u7528\uff0c\u4ec5\u5728\u9700\u8981\u5c55\u793a\u5217\u8868\u751f\u6210\u5f0f\u7684\u8bed\u6cd5\u65f6\u4f7f\u7528\u3002<\/p>\n<\/p>\n<p><h3>\u516d\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u5728Python\u4e2d\u6e05\u7a7a\u5217\u8868\u7684\u65b9\u6cd5\u6709\u591a\u79cd\u9009\u62e9\uff0c\u5305\u62ecclear()\u65b9\u6cd5\u3001\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u3001\u5207\u7247\u64cd\u4f5c\u3001\u5faa\u73af\u5220\u9664\u5143\u7d20\u548c\u5217\u8868\u751f\u6210\u5f0f\u3002<strong>clear()\u65b9\u6cd5<\/strong>\u662f\u6700\u5e38\u7528\u4e14\u9ad8\u6548\u7684\u65b9\u5f0f\uff0c\u9002\u7528\u4e8e\u9700\u8981\u9891\u7e41\u6e05\u7a7a\u5217\u8868\u7684\u573a\u666f\u3002<strong>\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868<\/strong>\u9002\u7528\u4e8e\u4e0d\u518d\u9700\u8981\u4fdd\u7559\u539f\u59cb\u5217\u8868\u5bf9\u8c61\u7684\u60c5\u51b5\u3002<strong>\u5207\u7247\u64cd\u4f5c<\/strong>\u9002\u7528\u4e8e\u9700\u8981\u4fdd\u7559\u5217\u8868\u5bf9\u8c61\u5e76\u4e14\u5bf9\u4ee3\u7801\u590d\u6742\u5ea6\u8981\u6c42\u4e0d\u9ad8\u7684\u60c5\u51b5\u3002<strong>\u5faa\u73af\u5220\u9664\u5143\u7d20<\/strong>\u548c<strong>\u5217\u8868\u751f\u6210\u5f0f<\/strong>\u5219\u4e00\u822c\u4e0d\u63a8\u8350\u4f7f\u7528\uff0c\u4ec5\u5728\u7279\u6b8a\u60c5\u51b5\u4e0b\u6216\u5b66\u4e60\u76ee\u7684\u65f6\u4f7f\u7528\u3002<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u4ee5\u4e0a\u4ecb\u7ecd\uff0c\u76f8\u4fe1\u4f60\u5df2\u7ecf\u4e86\u89e3\u4e86\u5728Python\u4e2d\u5220\u9664\u6240\u6709\u5143\u7d20\u7684\u591a\u79cd\u65b9\u6cd5\u53ca\u5176\u5e94\u7528\u573a\u666f\u3002\u5e0c\u671b\u8fd9\u4e9b\u5185\u5bb9\u80fd\u591f\u5e2e\u52a9\u4f60\u5728\u5b9e\u9645\u7f16\u7a0b\u4e2d\u9009\u62e9\u6700\u5408\u9002\u7684\u65b9\u6848\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u6e05\u7a7a\u5217\u8868\u7684\u5185\u5bb9\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u5982\u679c\u60a8\u60f3\u6e05\u7a7a\u4e00\u4e2a\u5217\u8868\uff0c\u53ef\u4ee5\u4f7f\u7528<code>clear()<\/code>\u65b9\u6cd5\u3002\u8fd9\u79cd\u65b9\u6cd5\u4f1a\u5220\u9664\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u800c\u4e0d\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u65b0\u5217\u8868\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u60a8\u6709\u4e00\u4e2a\u5217\u8868<code>my_list = [1, 2, 3]<\/code>\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528<code>my_list.clear()<\/code>\u6765\u79fb\u9664\u6240\u6709\u5143\u7d20\uff0c\u4f7f\u5176\u53d8\u4e3a\u7a7a\u5217\u8868\u3002<\/p>\n<p><strong>\u662f\u5426\u53ef\u4ee5\u901a\u8fc7\u8d4b\u503c\u7684\u65b9\u5f0f\u6765\u5220\u9664\u6240\u6709\u5143\u7d20\uff1f<\/strong><br \/>\u662f\u7684\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u5c06\u5217\u8868\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u6765\u8fbe\u5230\u6e05\u7a7a\u7684\u6548\u679c\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528<code>my_list = []<\/code>\u6765\u66ff\u6362\u539f\u6709\u7684\u5217\u8868\uff0c\u8fd9\u6837\u539f\u6765\u7684\u5217\u8868\u5c06\u4e0d\u518d\u5305\u542b\u4efb\u4f55\u5143\u7d20\u3002\u4e0d\u8fc7\uff0c\u8bf7\u6ce8\u610f\uff0c\u8fd9\u79cd\u65b9\u5f0f\u4f1a\u4f7f\u539f\u6765\u6307\u5411\u8be5\u5217\u8868\u7684\u6240\u6709\u53d8\u91cf\u5931\u53bb\u5f15\u7528\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\uff0c\u5982\u4f55\u5220\u9664\u5b57\u5178\u7684\u6240\u6709\u952e\u503c\u5bf9\uff1f<\/strong><br \/>\u5982\u679c\u60a8\u9700\u8981\u6e05\u7a7a\u5b57\u5178\u4e2d\u7684\u6240\u6709\u952e\u503c\u5bf9\uff0c\u53ef\u4ee5\u4f7f\u7528<code>clear()<\/code>\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u6709\u4e00\u4e2a\u5b57\u5178<code>my_dict = {&#39;a&#39;: 1, &#39;b&#39;: 2}<\/code>\uff0c\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528<code>my_dict.clear()<\/code>\u6765\u5220\u9664\u6240\u6709\u7684\u952e\u503c\u5bf9\uff0c\u4f7f\u5176\u53d8\u6210\u7a7a\u5b57\u5178\u3002\u8fd9\u6837\u7684\u65b9\u6cd5\u7b80\u5355\u800c\u9ad8\u6548\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5feb\u901f\u6e05\u7a7a\u5b57\u5178\u7684\u573a\u666f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u5220\u9664\u6240\u6709\u5143\u7d20\u7684\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528clear()\u65b9\u6cd5\u3001\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u3001\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5404\u6709\u4f18 [&hellip;]","protected":false},"author":3,"featured_media":1184462,"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\/1184453"}],"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=1184453"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1184453\/revisions"}],"predecessor-version":[{"id":1184463,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1184453\/revisions\/1184463"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1184462"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1184453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1184453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1184453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}