{"id":937863,"date":"2024-12-26T20:00:17","date_gmt":"2024-12-26T12:00:17","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/937863.html"},"modified":"2024-12-26T20:00:19","modified_gmt":"2024-12-26T12:00:19","slug":"python%e5%88%97%e8%a1%a8%e5%a6%82%e4%bd%95%e8%b5%8b%e5%80%bc","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/937863.html","title":{"rendered":"python\u5217\u8868\u5982\u4f55\u8d4b\u503c"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25073541\/0c9d5113-6a0f-487d-9441-33ecd737fc11.webp\" alt=\"python\u5217\u8868\u5982\u4f55\u8d4b\u503c\" \/><\/p>\n<p><h3>PYTHON\u5217\u8868\u5982\u4f55\u8d4b\u503c<\/h3>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u5217\u8868\u8d4b\u503c\u7684\u65b9\u5f0f\u6709\u591a\u79cd\uff0c\u5305\u62ec<strong>\u76f4\u63a5\u8d4b\u503c\u3001\u5207\u7247\u8d4b\u503c\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u3001\u901a\u8fc7\u5185\u7f6e\u51fd\u6570\u8d4b\u503c<\/strong>\u7b49\u3002\u5176\u4e2d\uff0c<strong>\u76f4\u63a5\u8d4b\u503c<\/strong>\u662f\u6700\u5e38\u7528\u7684\u65b9\u5f0f\u4e4b\u4e00\uff0c\u5b83\u53ef\u4ee5\u5feb\u901f\u521b\u5efa\u4e00\u4e2a\u65b0\u5217\u8868\u5e76\u5c06\u503c\u8d4b\u7ed9\u5b83\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c<strong>\u5207\u7247\u8d4b\u503c<\/strong>\u53ef\u4ee5\u5728\u4e0d\u521b\u5efa\u65b0\u5217\u8868\u7684\u60c5\u51b5\u4e0b\u4fee\u6539\u539f\u5217\u8868\u7684\u4e00\u90e8\u5206\u5185\u5bb9\u3002\u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5\uff0cPython\u7528\u6237\u53ef\u4ee5\u9ad8\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u5217\u8868\u6570\u636e\u3002<\/p>\n<\/p>\n<p><h4>\u76f4\u63a5\u8d4b\u503c<\/h4>\n<\/p>\n<p><p>\u76f4\u63a5\u8d4b\u503c\u662f\u521b\u5efa\u548c\u521d\u59cb\u5316\u5217\u8868\u7684\u6700\u57fa\u672c\u65b9\u5f0f\u3002\u5b83\u901a\u8fc7\u7b80\u5355\u7684\u8bed\u6cd5\u5c06\u4e00\u7ec4\u503c\u8d4b\u4e88\u4e00\u4e2a\u5217\u8868\u53d8\u91cf\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u521b\u5efa\u4e00\u4e2a\u5305\u542b\u6574\u6570\u7684\u5217\u8868<\/p>\n<p>numbers = [1, 2, 3, 4, 5]<\/p>\n<h2><strong>\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u5b57\u7b26\u4e32\u7684\u5217\u8868<\/strong><\/h2>\n<p>fruits = [&#39;apple&#39;, &#39;banana&#39;, &#39;cherry&#39;]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u7b80\u5355\u76f4\u89c2\uff0c\u975e\u5e38\u9002\u5408\u5728\u521d\u59cb\u5316\u65f6\u4f7f\u7528\u3002\u65e0\u8bba\u662f\u6570\u503c\u578b\u6570\u636e\u8fd8\u662f\u5b57\u7b26\u4e32\uff0c\u76f4\u63a5\u8d4b\u503c\u90fd\u80fd\u5feb\u901f\u521b\u5efa\u53ef\u4f9b\u4f7f\u7528\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n<p><h4>\u5207\u7247\u8d4b\u503c<\/h4>\n<\/p>\n<p><p>\u5207\u7247\u8d4b\u503c\u5141\u8bb8\u4f60\u5728\u5217\u8868\u4e2d\u9009\u62e9\u4e00\u4e2a\u8303\u56f4\uff0c\u5e76\u76f4\u63a5\u5bf9\u8fd9\u4e2a\u8303\u56f4\u8fdb\u884c\u8d4b\u503c\u6216\u4fee\u6539\u3002\u8fd9\u79cd\u65b9\u6cd5\u975e\u5e38\u7075\u6d3b\uff0c\u53ef\u4ee5\u7528\u6765\u66ff\u6362\u5217\u8868\u4e2d\u7684\u4e00\u90e8\u5206\u5143\u7d20\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u5b9a\u4e49\u4e00\u4e2a\u521d\u59cb\u5217\u8868<\/p>\n<p>list_a = [0, 1, 2, 3, 4, 5]<\/p>\n<h2><strong>\u4f7f\u7528\u5207\u7247\u8d4b\u503c\u66ff\u6362\u90e8\u5206\u5217\u8868\u5143\u7d20<\/strong><\/h2>\n<p>list_a[2:5] = [20, 30, 40]<\/p>\n<p>print(list_a)  # \u8f93\u51fa [0, 1, 20, 30, 40, 5]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u5207\u7247\u8d4b\u503c\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u5728\u4e0d\u9700\u8981\u91cd\u65b0\u521b\u5efa\u6574\u4e2a\u5217\u8868\u7684\u60c5\u51b5\u4e0b\uff0c\u52a8\u6001\u5730\u4fee\u6539\u6216\u66f4\u65b0\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002\u8fd9\u79cd\u65b9\u6cd5\u5728\u5904\u7406\u5927\u6570\u636e\u6216\u9700\u8981\u9891\u7e41\u66f4\u65b0\u7684\u573a\u666f\u4e2d\u5c24\u4e3a\u6709\u7528\u3002<\/p>\n<\/p>\n<p><h4>\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f<\/h4>\n<\/p>\n<p><p>\u5217\u8868\u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u7b80\u6d01\u800c\u5f3a\u5927\u7684\u521b\u5efa\u5217\u8868\u7684\u65b9\u6cd5\uff0c\u5b83\u5141\u8bb8\u901a\u8fc7\u7b80\u5355\u7684\u8868\u8fbe\u5f0f\u4ece\u73b0\u6709\u5217\u8868\u6216\u5176\u4ed6\u53ef\u8fed\u4ee3\u5bf9\u8c61\u4e2d\u751f\u6210\u65b0\u5217\u8868\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u751f\u6210\u4e00\u4e2a\u65b0\u7684\u5217\u8868\uff0c\u5176\u4e2d\u6bcf\u4e2a\u5143\u7d20\u662f\u539f\u5217\u8868\u5143\u7d20\u7684\u5e73\u65b9<\/p>\n<p>original_list = [1, 2, 3, 4, 5]<\/p>\n<p>squared_list = [x2 for x in original_list]<\/p>\n<p>print(squared_list)  # \u8f93\u51fa [1, 4, 9, 16, 25]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5217\u8868\u63a8\u5bfc\u5f0f\u4e0d\u4ec5\u53ef\u4ee5\u7528\u4e8e\u751f\u6210\u5217\u8868\uff0c\u8fd8\u53ef\u4ee5\u7ed3\u5408\u6761\u4ef6\u8bed\u53e5\u8fc7\u6ee4\u6570\u636e\u3002\u8fd9\u79cd\u65b9\u6cd5\u80fd\u591f\u5927\u5e45\u63d0\u5347\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u6548\u7387\u3002<\/p>\n<\/p>\n<p><h4>\u4f7f\u7528\u5185\u7f6e\u51fd\u6570\u8d4b\u503c<\/h4>\n<\/p>\n<p><p>Python\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5185\u7f6e\u51fd\u6570\uff0c\u5982<code>list()<\/code>\uff0c<code>copy()<\/code>\uff0c<code>extend()<\/code>\u7b49\uff0c\u53ef\u4ee5\u7528\u6765\u64cd\u4f5c\u5217\u8868\u5e76\u8d4b\u503c\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u4f7f\u7528 list() \u51fd\u6570\u590d\u5236\u5217\u8868<\/p>\n<p>list_b = list(original_list)<\/p>\n<h2><strong>\u4f7f\u7528 copy() \u65b9\u6cd5\u590d\u5236\u5217\u8868<\/strong><\/h2>\n<p>list_c = original_list.copy()<\/p>\n<h2><strong>\u4f7f\u7528 extend() \u65b9\u6cd5\u5411\u5217\u8868\u4e2d\u6dfb\u52a0\u5143\u7d20<\/strong><\/h2>\n<p>list_b.extend([6, 7, 8])<\/p>\n<p>print(list_b)  # \u8f93\u51fa [1, 2, 3, 4, 5, 6, 7, 8]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u4e9b\u5185\u7f6e\u51fd\u6570\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u529f\u80fd\uff0c\u4f7f\u5f97\u5728\u590d\u5236\u3001\u6269\u5c55\u548c\u64cd\u4f5c\u5217\u8868\u65f6\u66f4\u52a0\u65b9\u4fbf\u548c\u7075\u6d3b\u3002<\/p>\n<\/p>\n<p><h4>\u6df1\u5ea6\u590d\u5236\u4e0e\u6d45\u590d\u5236<\/h4>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u590d\u5236\u5217\u8868\u65f6\u9700\u8981\u6ce8\u610f\u6df1\u5ea6\u590d\u5236\u548c\u6d45\u590d\u5236\u4e4b\u95f4\u7684\u533a\u522b\u3002\u6d45\u590d\u5236\u53ea\u590d\u5236\u5217\u8868\u5bf9\u8c61\u672c\u8eab\uff0c\u800c\u6df1\u5ea6\u590d\u5236\u5219\u590d\u5236\u5217\u8868\u53ca\u5176\u6240\u6709\u5b50\u5bf9\u8c61\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import copy<\/p>\n<h2><strong>\u521b\u5efa\u5d4c\u5957\u5217\u8868<\/strong><\/h2>\n<p>nested_list = [[1, 2, 3], [4, 5, 6]]<\/p>\n<h2><strong>\u6d45\u590d\u5236<\/strong><\/h2>\n<p>shallow_copied_list = nested_list.copy()<\/p>\n<h2><strong>\u6df1\u590d\u5236<\/strong><\/h2>\n<p>deep_copied_list = copy.deepcopy(nested_list)<\/p>\n<h2><strong>\u4fee\u6539\u539f\u5217\u8868<\/strong><\/h2>\n<p>nested_list[0][0] = 99<\/p>\n<h2><strong>\u67e5\u770b\u4e0d\u540c\u590d\u5236\u65b9\u5f0f\u7684\u6548\u679c<\/strong><\/h2>\n<p>print(nested_list)           # \u8f93\u51fa [[99, 2, 3], [4, 5, 6]]<\/p>\n<p>print(shallow_copied_list)   # \u8f93\u51fa [[99, 2, 3], [4, 5, 6]]<\/p>\n<p>print(deep_copied_list)      # \u8f93\u51fa [[1, 2, 3], [4, 5, 6]]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u901a\u8fc7\u4f7f\u7528<code>copy.deepcopy()<\/code>\uff0c\u6211\u4eec\u53ef\u4ee5\u786e\u4fdd\u5373\u4f7f\u4fee\u6539\u4e86\u539f\u5217\u8868\uff0c\u6df1\u5ea6\u590d\u5236\u7684\u5217\u8868\u4f9d\u7136\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n<\/p>\n<p><h4>\u603b\u7ed3<\/h4>\n<\/p>\n<p><p>Python\u5217\u8868\u8d4b\u503c\u6709\u591a\u79cd\u65b9\u5f0f\uff0c\u6bcf\u79cd\u65b9\u5f0f\u90fd\u6709\u5176\u7279\u5b9a\u7684\u5e94\u7528\u573a\u666f\u548c\u4f18\u52bf\u3002<strong>\u76f4\u63a5\u8d4b\u503c\u9002\u5408\u4e8e\u521d\u59cb\u5316<\/strong>\uff0c<strong>\u5207\u7247\u8d4b\u503c\u7528\u4e8e\u90e8\u5206\u4fee\u6539<\/strong>\uff0c<strong>\u5217\u8868\u63a8\u5bfc\u5f0f\u7528\u4e8e\u751f\u6210\u548c\u8fc7\u6ee4<\/strong>\uff0c\u800c<strong>\u5185\u7f6e\u51fd\u6570\u63d0\u4f9b\u4e86\u989d\u5916\u7684\u64cd\u4f5c\u4fbf\u5229<\/strong>\u3002\u5728\u9009\u62e9\u5217\u8868\u8d4b\u503c\u65b9\u5f0f\u65f6\uff0c\u5f00\u53d1\u8005\u5e94\u6839\u636e\u5177\u4f53\u9700\u6c42\u548c\u6027\u80fd\u8003\u8651\uff0c\u9009\u62e9\u6700\u9002\u5408\u7684\u65b9\u6cd5\u3002\u901a\u8fc7\u7075\u6d3b\u8fd0\u7528\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u80fd\u591f\u663e\u8457\u63d0\u5347\u4ee3\u7801\u7684\u6548\u7387\u548c\u53ef\u8bfb\u6027\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5728Python\u4e2d\uff0c\u5982\u4f55\u5c06\u4e00\u4e2a\u5217\u8868\u7684\u503c\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u5217\u8868\u4e2d\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5c06\u4e00\u4e2a\u5217\u8868\u7684\u503c\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u5217\u8868\u3002\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u7b26<code>[:]<\/code>\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u5217\u8868\u7684\u526f\u672c\uff0c\u4f8b\u5982\uff1a<code>new_list = old_list[:]<\/code>\u3002\u53e6\u5916\uff0c<code>list()<\/code>\u6784\u9020\u51fd\u6570\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u76f8\u540c\u7684\u6548\u679c\uff1a<code>new_list = list(old_list)<\/code>\u3002\u5982\u679c\u9700\u8981\u8fdb\u884c\u6df1\u62f7\u8d1d\uff0c<code>copy<\/code>\u6a21\u5757\u4e2d\u7684<code>deepcopy<\/code>\u65b9\u6cd5\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u9009\u62e9\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\uff0c\u5217\u8868\u8d4b\u503c\u65f6\u4f1a\u51fa\u73b0\u4ec0\u4e48\u6837\u7684\u95ee\u9898\uff1f<\/strong><br \/>\u8d4b\u503c\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5f15\u7528\u95ee\u9898\u3002\u4f8b\u5982\uff0c\u5f53\u5c06\u4e00\u4e2a\u5217\u8868\u8d4b\u503c\u7ed9\u53e6\u4e00\u4e2a\u53d8\u91cf\u65f6\uff0c\u5b9e\u9645\u4e0a\u662f\u5c06\u539f\u5217\u8868\u7684\u5f15\u7528\u4f20\u9012\u7ed9\u65b0\u53d8\u91cf\uff0c\u800c\u4e0d\u662f\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5217\u8868\u3002\u5982\u679c\u539f\u5217\u8868\u88ab\u4fee\u6539\uff0c\u65b0\u53d8\u91cf\u4e5f\u4f1a\u53cd\u6620\u51fa\u8fd9\u4e9b\u53d8\u5316\u3002\u4f7f\u7528\u5207\u7247\u6216<code>copy<\/code>\u6a21\u5757\u53ef\u4ee5\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\u3002<\/p>\n<p><strong>\u5982\u4f55\u5728Python\u4e2d\u4f7f\u7528\u5217\u8868\u7684append()\u65b9\u6cd5\u8fdb\u884c\u8d4b\u503c\uff1f<\/strong><br \/><code>append()<\/code>\u65b9\u6cd5\u662f\u5c06\u4e00\u4e2a\u5143\u7d20\u6dfb\u52a0\u5230\u5217\u8868\u672b\u5c3e\u7684\u5e38\u7528\u65b9\u5f0f\uff0c\u800c\u4e0d\u662f\u8fdb\u884c\u8d4b\u503c\u3002\u5982\u679c\u5e0c\u671b\u5c06\u4e00\u4e2a\u65b0\u7684\u5143\u7d20\u6dfb\u52a0\u5230\u73b0\u6709\u5217\u8868\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528<code>my_list.append(new_element)<\/code>\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c<code>append()<\/code>\u65b9\u6cd5\u4f1a\u6539\u53d8\u539f\u5217\u8868\uff0c\u800c\u4e0d\u662f\u521b\u5efa\u65b0\u5217\u8868\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"PYTHON\u5217\u8868\u5982\u4f55\u8d4b\u503c \u5728Python\u4e2d\uff0c\u5217\u8868\u8d4b\u503c\u7684\u65b9\u5f0f\u6709\u591a\u79cd\uff0c\u5305\u62ec\u76f4\u63a5\u8d4b\u503c\u3001\u5207\u7247\u8d4b\u503c\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u3001\u901a\u8fc7 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