{"id":998442,"date":"2024-12-27T09:33:20","date_gmt":"2024-12-27T01:33:20","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/998442.html"},"modified":"2024-12-27T09:33:22","modified_gmt":"2024-12-27T01:33:22","slug":"python%e5%a6%82%e4%bd%95%e4%bd%95%e6%b8%85%e7%a9%ba%e5%88%97%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/998442.html","title":{"rendered":"python\u5982\u4f55\u4f55\u6e05\u7a7a\u5217\u8868"},"content":{"rendered":"

\"python\u5982\u4f55\u4f55\u6e05\u7a7a\u5217\u8868\"<\/p>\n

\u5728Python\u4e2d\uff0c\u6e05\u7a7a\u5217\u8868\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5305\u62ec\u4f7f\u7528clear()<\/code>\u65b9\u6cd5\u3001\u4f7f\u7528\u5207\u7247\u8d4b\u503c\u3001\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u7b49\u3002\u5e38\u7528\u7684\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528clear()<\/code>\u65b9\u6cd5\u3001\u5207\u7247\u8d4b\u503c[:]<\/code>\u3001\u91cd\u65b0\u8d4b\u503clist = []<\/code><\/strong>\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5176\u4e2d\u4e00\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528clear()<\/code>\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4f7f\u7528clear()<\/code>\u65b9\u6cd5\u662fPython\u4e2d\u4e13\u95e8\u7528\u4e8e\u6e05\u7a7a\u5217\u8868\u7684\u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u76f4\u63a5\u6e05\u7a7a\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u800c\u4e0d\u6539\u53d8\u5217\u8868\u5bf9\u8c61\u672c\u8eab\u3002\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u7b80\u5355\u76f4\u89c2\uff0c\u5e76\u4e14\u80fd\u4fdd\u8bc1\u5f15\u7528\u8be5\u5217\u8868\u7684\u5176\u4ed6\u53d8\u91cf\u4e0d\u53d7\u5f71\u54cd\u3002\u5177\u4f53\u4f7f\u7528\u65b9\u5f0f\u5982\u4e0b\uff1a<\/p>\n<\/p>\n

my_list = [1, 2, 3, 4, 5]<\/p>\n
my_list.clear()<\/p>\n
print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u6211\u5c06\u8fdb\u4e00\u6b65\u63a2\u8ba8\u5176\u4ed6\u65b9\u6cd5\u7684\u4f7f\u7528\u53ca\u5176\u9002\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n
\u4e00\u3001\u4f7f\u7528CLEAR()<\/code>\u65b9\u6cd5<\/h2>\n<\/p>\n
clear()<\/code>\u65b9\u6cd5\u662fPython\u5185\u7f6e\u7684\u65b9\u6cd5\u4e4b\u4e00\uff0c\u7528\u4e8e\u6e05\u7a7a\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\u3002\u8fd9\u4e2a\u65b9\u6cd5\u53ef\u4ee5\u76f4\u63a5\u4f5c\u7528\u4e8e\u5217\u8868\u5bf9\u8c61\uff0c\u5e76\u4e14\u4e0d\u4f1a\u6539\u53d8\u5217\u8868\u5bf9\u8c61\u7684\u5f15\u7528\u3002\u5b83\u7279\u522b\u9002\u5408\u5728\u9700\u8981\u4fdd\u6301\u5217\u8868\u5bf9\u8c61\u4e0d\u53d8\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528\u3002<\/p>\n<\/p>\n
\u4f18\u70b9<\/h3>\n<\/p>\n
    \n
  1. \u7b80\u5355\u76f4\u89c2<\/strong>\uff1aclear()<\/code>\u65b9\u6cd5\u7684\u8bed\u4e49\u975e\u5e38\u660e\u786e\uff0c\u8ba9\u4ee3\u7801\u66f4\u5177\u53ef\u8bfb\u6027\u3002<\/li>\n
  2. \u4fdd\u6301\u5bf9\u8c61\u5f15\u7528\u4e0d\u53d8<\/strong>\uff1a\u5728\u591a\u5904\u5f15\u7528\u5217\u8868\u7684\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528clear()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u907f\u514d\u9700\u8981\u66f4\u65b0\u5176\u4ed6\u5f15\u7528\u7684\u9ebb\u70e6\u3002<\/li>\n<\/ol>\n
    \u793a\u4f8b<\/h3>\n<\/p>\n
    my_list = ['a', 'b', 'c']<\/p>\n
    my_list.clear()<\/p>\n
    print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cmy_list.clear()<\/code>\u6e05\u7a7a\u4e86\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u800c\u4e0d\u6539\u53d8\u5217\u8868\u5bf9\u8c61\u7684\u5f15\u7528\u3002\u5982\u679c\u6709\u5176\u4ed6\u53d8\u91cf\u5f15\u7528\u4e86\u540c\u4e00\u4e2a\u5217\u8868\u5bf9\u8c61\uff0c\u8fd9\u4e9b\u53d8\u91cf\u4f1a\u6ce8\u610f\u5230\u5217\u8868\u7684\u5185\u5bb9\u5df2\u7ecf\u88ab\u6e05\u7a7a\uff0c\u4f46\u4ecd\u7136\u6307\u5411\u540c\u4e00\u4e2a\u5bf9\u8c61\u3002<\/p>\n<\/p>\n
    \u4e8c\u3001\u4f7f\u7528\u5207\u7247\u8d4b\u503c<\/h2>\n<\/p>\n
    \u5207\u7247\u8d4b\u503c\u662f\u53e6\u4e00\u79cd\u6e05\u7a7a\u5217\u8868\u7684\u65b9\u6cd5\uff0c\u901a\u8fc7\u5c06\u5217\u8868\u7684\u5168\u90e8\u5207\u7247\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\uff0c\u8fbe\u5230\u6e05\u7a7a\u5217\u8868\u7684\u6548\u679c\u3002\u8fd9\u79cd\u65b9\u6cd5\u540c\u6837\u4e0d\u4f1a\u6539\u53d8\u5217\u8868\u5bf9\u8c61\u7684\u5f15\u7528\u3002<\/p>\n<\/p>\n
    \u4f7f\u7528\u65b9\u5f0f<\/h3>\n<\/p>\n
    \u5207\u7247\u8d4b\u503c\u53ef\u4ee5\u901a\u8fc7[:]<\/code>\u6765\u64cd\u4f5c\uff0c\u8868\u793a\u5c06\u6574\u4e2a\u5217\u8868\u66ff\u6362\u4e3a\u7a7a\u5217\u8868\u3002<\/p>\n<\/p>\n
    \u793a\u4f8b<\/h3>\n<\/p>\n
    my_list = [1, 2, 3, 4]<\/p>\n
    my_list[:] = []<\/p>\n
    print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n
    <\/code><\/pre>\n<\/p>\n
    \u4f18\u70b9<\/h3>\n<\/p>\n
      \n
    1. \u4fdd\u6301\u5bf9\u8c61\u5f15\u7528\u4e0d\u53d8<\/strong>\uff1a\u50cfclear()<\/code>\u65b9\u6cd5\u4e00\u6837\uff0c\u5207\u7247\u8d4b\u503c\u4e0d\u4f1a\u6539\u53d8\u5217\u8868\u5bf9\u8c61\u7684\u5f15\u7528\u3002<\/li>\n
    2. \u7075\u6d3b\u6027<\/strong>\uff1a\u5207\u7247\u8d4b\u503c\u53ef\u4ee5\u7528\u4e8e\u66f4\u590d\u6742\u7684\u64cd\u4f5c\uff0c\u4f8b\u5982\u66ff\u6362\u5217\u8868\u4e2d\u7684\u67d0\u4e00\u90e8\u5206\u5185\u5bb9\u3002<\/li>\n<\/ol>\n
      \u4e09\u3001\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868<\/h2>\n<\/p>\n
      \u91cd\u65b0\u8d4b\u503c\u662f\u4e00\u79cd\u76f4\u63a5\u3001\u7b80\u5355\u7684\u65b9\u6cd5\uff0c\u901a\u8fc7\u5c06\u5217\u8868\u53d8\u91cf\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u6765\u6e05\u7a7a\u5217\u8868\u3002\u8fd9\u79cd\u65b9\u6cd5\u4f1a\u6539\u53d8\u5217\u8868\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u56e0\u6b64\u6240\u6709\u5f15\u7528\u4e86\u539f\u5217\u8868\u7684\u53d8\u91cf\u90fd\u9700\u8981\u91cd\u65b0\u66f4\u65b0\u3002<\/p>\n<\/p>\n
      \u4f7f\u7528\u65b9\u5f0f<\/h3>\n<\/p>\n
      \u76f4\u63a5\u5c06\u5217\u8868\u53d8\u91cf\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u5373\u53ef\uff1a<\/p>\n<\/p>\n
      my_list = ['x', 'y', 'z']<\/p>\n
      my_list = []<\/p>\n
      print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u7f3a\u70b9<\/h3>\n<\/p>\n
        \n
      1. \u6539\u53d8\u5bf9\u8c61\u5f15\u7528<\/strong>\uff1a\u91cd\u65b0\u8d4b\u503c\u4f1a\u6539\u53d8\u5217\u8868\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u8fd9\u610f\u5473\u7740\u5982\u679c\u6709\u5176\u4ed6\u53d8\u91cf\u5f15\u7528\u4e86\u8be5\u5217\u8868\uff0c\u5b83\u4eec\u5c06\u4e0d\u4f1a\u611f\u77e5\u5230\u5217\u8868\u7684\u6e05\u7a7a\u3002<\/li>\n<\/ol>\n
        \u9002\u7528\u573a\u666f<\/h3>\n<\/p>\n
        \u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u4e0d\u9700\u8981\u7ef4\u62a4\u5217\u8868\u5bf9\u8c61\u5f15\u7528\u7684\u60c5\u51b5\u4e0b\uff0c\u4f8b\u5982\u5728\u51fd\u6570\u5185\u90e8\u4f7f\u7528\u4e34\u65f6\u5217\u8868\u65f6\u3002<\/p>\n<\/p>\n
        \u56db\u3001\u4f7f\u7528POP()<\/code>\u65b9\u6cd5\u9010\u4e2a\u5220\u9664<\/h2>\n<\/p>\n
        \u867d\u7136pop()<\/code>\u65b9\u6cd5\u901a\u5e38\u7528\u4e8e\u5220\u9664\u5217\u8868\u4e2d\u7684\u5355\u4e2a\u5143\u7d20\uff0c\u4f46\u901a\u8fc7\u5faa\u73af\u53ef\u4ee5\u5b9e\u73b0\u9010\u4e2a\u5220\u9664\u6240\u6709\u5143\u7d20\uff0c\u4ece\u800c\u8fbe\u5230\u6e05\u7a7a\u5217\u8868\u7684\u6548\u679c\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u5e38\u7528\uff0c\u56e0\u4e3a\u6548\u7387\u8f83\u4f4e\u3002<\/p>\n<\/p>\n
        \u793a\u4f8b<\/h3>\n<\/p>\n
        my_list = [5, 6, 7, 8]<\/p>\n
        while my_list:<\/p>\n
            my_list.pop()<\/p>\n
        print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n
        <\/code><\/pre>\n<\/p>\n
        \u7f3a\u70b9<\/h3>\n<\/p>\n
          \n
        1. \u6548\u7387\u4f4e\u4e0b<\/strong>\uff1a\u9700\u8981\u591a\u6b21\u64cd\u4f5c\u5217\u8868\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u8f83\u9ad8\u3002<\/li>\n
        2. \u4ee3\u7801\u5197\u957f<\/strong>\uff1a\u76f8\u6bd4\u5176\u4ed6\u65b9\u6cd5\uff0c\u4f7f\u7528pop()<\/code>\u6e05\u7a7a\u5217\u8868\u663e\u5f97\u4e0d\u591f\u7b80\u6d01\u3002<\/li>\n<\/ol>\n
          \u4e94\u3001\u603b\u7ed3<\/h2>\n<\/p>\n
          \u5728Python\u4e2d\uff0c\u6e05\u7a7a\u5217\u8868\u7684\u65b9\u6cd5\u591a\u79cd\u591a\u6837\uff0cclear()<\/code>\u65b9\u6cd5\u548c\u5207\u7247\u8d4b\u503c\u6700\u4e3a\u5e38\u7528<\/strong>\uff0c\u56e0\u4e3a\u5b83\u4eec\u65e2\u7b80\u5355\u53c8\u4e0d\u4f1a\u6539\u53d8\u5217\u8868\u5bf9\u8c61\u7684\u5f15\u7528\u3002\u5728\u9700\u8981\u4fdd\u6301\u5bf9\u8c61\u5f15\u7528\u4e0d\u53d8\u7684\u60c5\u51b5\u4e0b\uff0c\u5e94\u4f18\u5148\u8003\u8651\u8fd9\u4e24\u79cd\u65b9\u6cd5\u3002\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u9002\u7528\u4e8e\u4e0d\u5728\u610f\u5bf9\u8c61\u5f15\u7528\u7684\u573a\u666f\uff0c\u800c\u4f7f\u7528pop()<\/code>\u65b9\u6cd5\u9010\u4e2a\u5220\u9664\u5219\u4e00\u822c\u4e0d\u63a8\u8350\uff0c\u9664\u975e\u6709\u7279\u6b8a\u9700\u6c42\u3002<\/p>\n<\/p>\n
          \u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u548c\u4ee3\u7801\u98ce\u683c\u6765\u51b3\u5b9a\uff0c\u786e\u4fdd\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u6548\u7387\u3002<\/p>\n<\/p>\n
          \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
           \u6e05\u7a7a\u5217\u8868\u7684\u65b9\u6cd5\u6709\u54ea\u4e9b\uff1f<\/strong>
          \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u5f0f\u6765\u6e05\u7a7a\u5217\u8868\u3002\u6700\u5e38\u89c1\u7684\u4e24\u79cd\u65b9\u5f0f\u662f\u4f7f\u7528clear()<\/code>\u65b9\u6cd5\u548c\u5207\u7247\u8d4b\u503c\u3002\u4f8b\u5982\uff0cmy_list.clear()<\/code>\u4f1a\u76f4\u63a5\u6e05\u7a7amy_list<\/code>\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u800cmy_list[:] = []<\/code>\u4e5f\u80fd\u8fbe\u5230\u76f8\u540c\u6548\u679c\u3002\u8fd9\u4e24\u79cd\u65b9\u6cd5\u90fd\u5f88\u9ad8\u6548\uff0c\u7528\u6237\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u5f0f\u3002<\/p>\n
          \u6e05\u7a7a\u5217\u8868\u4f1a\u5f71\u54cd\u539f\u59cb\u5217\u8868\u5417\uff1f<\/strong>
          \u5982\u679c\u5728\u4ee3\u7801\u4e2d\u4f7f\u7528clear()<\/code>\u65b9\u6cd5\u6216\u5207\u7247\u8d4b\u503c\uff0c\u539f\u59cb\u5217\u8868\u4f1a\u88ab\u6e05\u7a7a\u3002\u5982\u679c\u4f60\u9700\u8981\u4fdd\u7559\u539f\u59cb\u5217\u8868\u7684\u72b6\u6001\uff0c\u53ef\u4ee5\u5148\u5c06\u5176\u590d\u5236\u5230\u4e00\u4e2a\u65b0\u5217\u8868\u4e2d\uff0c\u4f7f\u7528my_list.copy()<\/code>\u6765\u751f\u6210\u4e00\u4e2a\u526f\u672c\uff0c\u7136\u540e\u5728\u526f\u672c\u4e0a\u8fdb\u884c\u6e05\u7a7a\u64cd\u4f5c\uff0c\u8fd9\u6837\u539f\u59cb\u5217\u8868\u5c06\u4e0d\u4f1a\u53d7\u5230\u5f71\u54cd\u3002<\/p>\n
          \u5982\u4f55\u5224\u65ad\u5217\u8868\u662f\u5426\u5df2\u7ecf\u88ab\u6e05\u7a7a\uff1f<\/strong>
          \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u68c0\u67e5\u5217\u8868\u7684\u957f\u5ea6\u6216\u76f4\u63a5\u5224\u65ad\u5217\u8868\u7684\u771f\u503c\u6765\u5224\u65ad\u5176\u662f\u5426\u4e3a\u7a7a\u3002\u4f7f\u7528len(my_list) == 0<\/code>\u53ef\u4ee5\u5224\u65ad\u5217\u8868\u7684\u957f\u5ea6\u662f\u5426\u4e3a\u96f6\uff0c\u800cif not my_list:<\/code>\u5219\u53ef\u4ee5\u901a\u8fc7\u5e03\u5c14\u503c\u5224\u65ad\uff0c\u5982\u679c\u5217\u8868\u4e3a\u7a7a\u5219\u8fd4\u56deTrue<\/code>\u3002\u8fd9\u4e9b\u65b9\u6cd5\u90fd\u80fd\u6709\u6548\u5730\u5e2e\u52a9\u7528\u6237\u786e\u8ba4\u5217\u8868\u7684\u72b6\u6001\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u6e05\u7a7a\u5217\u8868\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5305\u62ec\u4f7f\u7528clear()\u65b9\u6cd5\u3001\u4f7f\u7528\u5207\u7247\u8d4b\u503c\u3001\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u7b49\u3002\u5e38\u7528\u7684\u65b9 […]","protected":false},"author":3,"featured_media":998444,"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\/998442"}],"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=998442"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/998442\/revisions"}],"predecessor-version":[{"id":998448,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/998442\/revisions\/998448"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/998444"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=998442"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=998442"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=998442"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}