{"id":1016865,"date":"2024-12-27T12:20:13","date_gmt":"2024-12-27T04:20:13","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1016865.html"},"modified":"2024-12-27T12:20:16","modified_gmt":"2024-12-27T04:20:16","slug":"python%e4%b8%ad%e5%a6%82%e4%bd%95%e6%b8%85%e7%a9%ba%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1016865.html","title":{"rendered":"python\u4e2d\u5982\u4f55\u6e05\u7a7a\u6570\u7ec4"},"content":{"rendered":"

\"python\u4e2d\u5982\u4f55\u6e05\u7a7a\u6570\u7ec4\"<\/p>\n

\u5728Python\u4e2d\u6e05\u7a7a\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5305\u62ec\u4f7f\u7528clear()<\/code>\u65b9\u6cd5\u3001\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u3001\u4f7f\u7528\u5207\u7247\u8d4b\u503c\u7b49\u3002<\/strong>\u9009\u62e9\u5177\u4f53\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u7ec4\u7684\u5b9e\u73b0\u65b9\u5f0f\uff08\u5982\u5217\u8868\u3001NumPy\u6570\u7ec4\u7b49\uff09\u53ca\u5176\u5e94\u7528\u573a\u666f\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528clear()<\/code>\u65b9\u6cd5<\/strong>\uff0c\u56e0\u4e3a\u5b83\u76f4\u63a5\u6e05\u9664\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\u800c\u4e0d\u6539\u53d8\u5176\u5f15\u7528\u5730\u5740\u3002\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\u5728\u9700\u8981\u4fdd\u6301\u539f\u59cb\u5217\u8868\u7684\u5f15\u7528\uff0c\u4f46\u53c8\u60f3\u6e05\u7a7a\u5176\u4e2d\u7684\u5143\u7d20\u65f6\uff0cclear()<\/code>\u65b9\u6cd5\u662f\u6700\u4e3a\u7b80\u4fbf\u548c\u76f4\u89c2\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u5728Python\u7f16\u7a0b\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u64cd\u4f5c\u6570\u7ec4\u6570\u636e\u7ed3\u6784\u3002\u5c3d\u7ba1Python\u6ca1\u6709\u5185\u7f6e\u7684\u6570\u7ec4\u7c7b\u578b\uff0c\u4f46\u5217\u8868\uff08list\uff09\u662f\u6700\u5e38\u7528\u7684\u6570\u7ec4\u5b9e\u73b0\u65b9\u5f0f\uff0c\u540c\u65f6\uff0cNumPy\u5e93\u63d0\u4f9b\u4e86\u66f4\u5f3a\u5927\u7684\u6570\u7ec4\u652f\u6301\u3002\u4ee5\u4e0b\u662f\u51e0\u79cd\u6e05\u7a7a\u6570\u7ec4\u7684\u65b9\u6cd5\u53ca\u5176\u9002\u7528\u60c5\u666f\uff1a<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528CLEAR()\u65b9\u6cd5<\/p>\n<\/p>\n

clear()<\/code>\u65b9\u6cd5\u662fPython\u5217\u8868\u63d0\u4f9b\u7684\u4e00\u4e2a\u5185\u7f6e\u65b9\u6cd5\uff0c\u7528\u4e8e\u6e05\u9664\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u9700\u8981\u6e05\u7a7a\u5217\u8868\u4f46\u4e0d\u6539\u53d8\u5176\u5f15\u7528\u7684\u573a\u666f\u3002<\/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
\u5f53\u60a8\u8c03\u7528clear()<\/code>\u65b9\u6cd5\u65f6\uff0c\u5b83\u4f1a\u76f4\u63a5\u79fb\u9664\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u800c\u4e0d\u4f1a\u521b\u5efa\u65b0\u7684\u5217\u8868\u5bf9\u8c61\uff0c\u8fd9\u610f\u5473\u7740\u539f\u59cb\u5217\u8868\u7684\u5185\u5b58\u5730\u5740\u4fdd\u6301\u4e0d\u53d8\u3002\u8fd9\u5728\u67d0\u4e9b\u5e94\u7528\u4e2d\u53ef\u80fd\u5f88\u91cd\u8981\uff0c\u5c24\u5176\u662f\u5728\u4f7f\u7528\u76f8\u540c\u7684\u5217\u8868\u5f15\u7528\u8fdb\u884c\u540e\u7eed\u64cd\u4f5c\u65f6\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868<\/p>\n<\/p>\n
\u53e6\u4e00\u79cd\u6e05\u7a7a\u6570\u7ec4\u7684\u65b9\u6cd5\u662f\u5c06\u5176\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u4e0d\u9700\u8981\u4fdd\u7559\u539f\u59cb\u5217\u8868\u5bf9\u8c61\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
my_list = []<\/p>\n
print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u5728\u4e8e\u7b80\u5355\u660e\u4e86\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u91cd\u65b0\u8d4b\u503c\u4f1a\u6539\u53d8\u539f\u59cb\u5217\u8868\u7684\u5f15\u7528\u5730\u5740\u3002\u8fd9\u610f\u5473\u7740\uff0c\u5982\u679c\u5728\u5176\u4ed6\u5730\u65b9\u4ecd\u7136\u5f15\u7528\u7740\u539f\u59cb\u5217\u8868\uff0c\u90a3\u4e48\u8fd9\u4e9b\u5f15\u7528\u5c06\u4e0d\u4f1a\u88ab\u6e05\u7a7a\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528\u5207\u7247\u8d4b\u503c<\/p>\n<\/p>\n
\u5207\u7247\u8d4b\u503c\u662fPython\u63d0\u4f9b\u7684\u5f3a\u5927\u7279\u6027\u4e4b\u4e00\uff0c\u901a\u8fc7\u5b83\uff0c\u53ef\u4ee5\u5728\u4e0d\u6539\u53d8\u5217\u8868\u5f15\u7528\u7684\u60c5\u51b5\u4e0b\u6e05\u7a7a\u5217\u8868\u3002\u8fd9\u79cd\u65b9\u6cd5\u7279\u522b\u9002\u7528\u4e8e\u5e0c\u671b\u4fdd\u7559\u539f\u59cb\u5217\u8868\u5bf9\u8c61\u4f46\u6e05\u7a7a\u5176\u5185\u5bb9\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
my_list[:] = []<\/p>\n
print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u4f7f\u7528\u5207\u7247[:]<\/code>\uff0c\u6211\u4eec\u53ef\u4ee5\u9009\u62e9\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\uff0c\u5e76\u5c06\u5176\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u3002\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\uff0c\u5c3d\u7ba1\u6e05\u7a7a\u4e86\u5217\u8868\u5185\u5bb9\uff0c\u4f46\u539f\u59cb\u5217\u8868\u7684\u5f15\u7528\u4ecd\u7136\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528DELCLEAR()<\/p>\n<\/p>\n
del<\/code>\u8bed\u53e5\u53ef\u4ee5\u7528\u4e8e\u5220\u9664\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002\u5c3d\u7ba1\u8fd9\u4e0d\u662f\u4e00\u4e2a\u76f4\u63a5\u7528\u4e8e\u6e05\u7a7a\u5217\u8868\u7684\u65b9\u6cd5\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u5220\u9664\u6240\u6709\u5143\u7d20\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002<\/p>\n<\/p>\n
my_list = [1, 2, 3, 4, 5]<\/p>\n
del my_list[:]<\/p>\n
print(my_list)  # \u8f93\u51fa\uff1a[]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4f7f\u7528del<\/code>\u8bed\u53e5\u7684\u4f18\u70b9\u5728\u4e8e\u5176\u7075\u6d3b\u6027\uff0c\u53ef\u4ee5\u7528\u4e8e\u5220\u9664\u7279\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\u3002\u7136\u800c\uff0c\u76f4\u63a5\u7528\u5b83\u6765\u6e05\u7a7a\u6574\u4e2a\u5217\u8868\u53ef\u80fd\u663e\u5f97\u4e0d\u591f\u76f4\u89c2\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u5bf9\u4e8eNUMPY\u6570\u7ec4\u7684\u6e05\u7a7a<\/p>\n<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u4f7f\u7528NumPy\u6570\u7ec4\u800c\u4e0d\u662fPython\u7684\u5185\u7f6e\u5217\u8868\uff0c\u6e05\u7a7a\u6570\u7ec4\u7684\u65b9\u6cd5\u5c06\u6709\u6240\u4e0d\u540c\u3002NumPy\u6570\u7ec4\u662f\u56fa\u5b9a\u5927\u5c0f\u7684\uff0c\u56e0\u6b64\u4e0d\u80fd\u50cf\u5217\u8868\u4e00\u6837\u76f4\u63a5\u6e05\u7a7a\uff0c\u4f46\u53ef\u4ee5\u5c06\u5176\u5185\u5bb9\u8bbe\u7f6e\u4e3a\u96f6\u6216\u5176\u4ed6\u9ed8\u8ba4\u503c\u3002<\/p>\n<\/p>\n
import numpy as np<\/p>\n
my_array = np.array([1, 2, 3, 4, 5])<\/p>\n
my_array[:] = 0<\/p>\n
print(my_array)  # \u8f93\u51fa\uff1a[0, 0, 0, 0, 0]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728NumPy\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5207\u7247\u76f4\u63a5\u5c06\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u8bbe\u7f6e\u4e3a\u7279\u5b9a\u503c\u3002\u5c3d\u7ba1\u8fd9\u5e76\u4e0d\u662f\u4e25\u683c\u610f\u4e49\u4e0a\u7684\u201c\u6e05\u7a7a\u201d\uff0c\u4f46\u5728\u5f88\u591a\u60c5\u51b5\u4e0b\uff0c\u8fd9\u79cd\u65b9\u6cd5\u8db3\u4ee5\u8fbe\u5230\u76ee\u7684\u3002<\/p>\n<\/p>\n
\u516d\u3001\u5e94\u7528\u573a\u666f\u5206\u6790<\/p>\n<\/p>\n
    \n
  1. \n
    \u6570\u636e\u91cd\u7f6e<\/strong>\uff1a\u5728\u6570\u636e\u5904\u7406\u6216\u673a\u5668\u5b66\u4e60<\/a>\u9879\u76ee\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u91cd\u7f6e\u5b58\u50a8\u6570\u636e\u7684\u6570\u7ec4\u3002\u8fd9\u65f6\uff0c\u6e05\u7a7a\u6570\u7ec4\u662f\u91cd\u7f6e\u64cd\u4f5c\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<\/p>\n<\/li>\n
  2. \n
    \u5185\u5b58\u7ba1\u7406<\/strong>\uff1a\u5728\u9700\u8981\u9891\u7e41\u521b\u5efa\u548c\u9500\u6bc1\u5927\u6570\u7ec4\u7684\u5e94\u7528\u4e2d\uff0c\u6e05\u7a7a\u6570\u7ec4\u53ef\u4ee5\u5e2e\u52a9\u7ba1\u7406\u5185\u5b58\u4f7f\u7528\uff0c\u4ece\u800c\u63d0\u9ad8\u7a0b\u5e8f\u6027\u80fd\u3002<\/p>\n<\/p>\n<\/li>\n
  3. \n
    \u907f\u514d\u5f15\u7528\u95ee\u9898<\/strong>\uff1a\u5728Python\u4e2d\uff0c\u53d8\u91cf\u662f\u5bf9\u5bf9\u8c61\u7684\u5f15\u7528\u3002\u56e0\u6b64\uff0c\u5728\u591a\u5904\u5f15\u7528\u540c\u4e00\u5217\u8868\u7684\u573a\u666f\u4e2d\uff0c\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6e05\u7a7a\u6570\u7ec4\u53ef\u4ee5\u907f\u514d\u610f\u5916\u7684\u6570\u636e\u4e22\u5931\u6216\u9519\u8bef\u3002<\/p>\n<\/p>\n<\/li>\n<\/ol>\n
    \u4e03\u3001\u603b\u7ed3<\/p>\n<\/p>\n
    \u5728Python\u4e2d\u6e05\u7a7a\u6570\u7ec4\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4f9b\u9009\u62e9\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u72ec\u7279\u7684\u4f18\u70b9\u548c\u9002\u7528\u573a\u666f\u3002\u5728\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u65f6\uff0c\u5e94\u8003\u8651\u7a0b\u5e8f\u7684\u9700\u6c42\u548c\u6027\u80fd\u8981\u6c42\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662fclear()<\/code>\u65b9\u6cd5<\/strong>\uff0c\u56e0\u4e3a\u5b83\u7b80\u5355\u4e14\u4fdd\u6301\u4e86\u5217\u8868\u7684\u5f15\u7528\u4e0d\u53d8\u3002\u5bf9\u4e8eNumPy\u6570\u7ec4\uff0c\u867d\u7136\u4e0d\u80fd\u76f4\u63a5\u6e05\u7a7a\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u6765\u8fbe\u5230\u7c7b\u4f3c\u6548\u679c\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u7075\u6d3b\u8fd0\u7528\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u6709\u6548\u5730\u7ba1\u7406\u6570\u636e\u7ed3\u6784\uff0c\u4ece\u800c\u7f16\u5199\u51fa\u66f4\u9ad8\u6548\u3001\u53ef\u9760\u7684\u4ee3\u7801\u3002<\/p>\n<\/p>\n
    \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
     \u5982\u4f55\u5728Python\u4e2d\u6709\u6548\u6e05\u7a7a\u4e00\u4e2a\u6570\u7ec4\uff1f<\/strong>
    \u5728Python\u4e2d\uff0c\u6e05\u7a7a\u6570\u7ec4\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528clear()<\/code>\u65b9\u6cd5\uff0c\u5b83\u4f1a\u76f4\u63a5\u6e05\u7a7a\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u6709\u4e00\u4e2a\u5217\u8868my_list = [1, 2, 3]<\/code>\uff0c\u8c03\u7528my_list.clear()<\/code>\u540e\uff0cmy_list<\/code>\u5c06\u53d8\u4e3a\u7a7a\u5217\u8868[]<\/code>\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u5207\u7247\u8d4b\u503c\u7684\u65b9\u6cd5my_list[:] = []<\/code>\uff0c\u8fd9\u4e5f\u80fd\u8fbe\u5230\u6e05\u7a7a\u5217\u8868\u7684\u6548\u679c\u3002<\/p>\n
    \u5728Python\u4e2d\u6e05\u7a7a\u6570\u7ec4\u4f1a\u5f71\u54cd\u539f\u6570\u7ec4\u5417\uff1f<\/strong>
    \u6e05\u7a7a\u6570\u7ec4\u65f6\uff0c\u901a\u5e38\u662f\u76f4\u63a5\u5728\u539f\u6570\u7ec4\u4e0a\u8fdb\u884c\u64cd\u4f5c\uff0c\u56e0\u6b64\u539f\u6570\u7ec4\u7684\u5f15\u7528\u4e0d\u4f1a\u6539\u53d8\u3002\u5982\u679c\u4f60\u4f7f\u7528clear()<\/code>\u6216\u5207\u7247\u8d4b\u503c\uff0c\u8fd9\u4e9b\u64cd\u4f5c\u90fd\u4f1a\u5f71\u54cd\u539f\u6570\u7ec4\u3002\u5982\u679c\u60f3\u8981\u4fdd\u7559\u539f\u6570\u7ec4\uff0c\u53ef\u4ee5\u5728\u6e05\u7a7a\u4e4b\u524d\u5148\u521b\u5efa\u4e00\u4e2a\u526f\u672c\u3002<\/p>\n
    \u4f7f\u7528del<\/code>\u8bed\u53e5\u662f\u5426\u53ef\u4ee5\u6e05\u7a7a\u6570\u7ec4\uff1f<\/strong>
    del<\/code>\u8bed\u53e5\u53ef\u4ee5\u7528\u4e8e\u5220\u9664\u6574\u4e2a\u5217\u8868\uff0c\u4f46\u5b83\u7684\u4f5c\u7528\u4e0e\u6e05\u7a7a\u6570\u7ec4\u6709\u6240\u4e0d\u540c\u3002\u4f7f\u7528del my_list<\/code>\u5c06\u5b8c\u5168\u5220\u9664\u8be5\u5217\u8868\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u6e05\u7a7a\u5176\u4e2d\u7684\u5143\u7d20\u3002\u82e5\u5e0c\u671b\u4fdd\u7559\u5217\u8868\u5bf9\u8c61\u4f46\u6e05\u7a7a\u5176\u5185\u5bb9\uff0c\u5efa\u8bae\u4f7f\u7528clear()<\/code>\u6216\u5207\u7247\u8d4b\u503c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u6e05\u7a7a\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5305\u62ec\u4f7f\u7528clear()\u65b9\u6cd5\u3001\u91cd\u65b0\u8d4b\u503c\u4e3a\u7a7a\u5217\u8868\u3001\u4f7f\u7528\u5207\u7247\u8d4b\u503c\u7b49\u3002\u9009\u62e9\u5177\u4f53\u7684 […]","protected":false},"author":3,"featured_media":1016870,"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\/1016865"}],"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=1016865"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1016865\/revisions"}],"predecessor-version":[{"id":1016871,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1016865\/revisions\/1016871"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1016870"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1016865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1016865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1016865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}