{"id":947484,"date":"2024-12-26T23:52:04","date_gmt":"2024-12-26T15:52:04","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/947484.html"},"modified":"2024-12-26T23:52:06","modified_gmt":"2024-12-26T15:52:06","slug":"python%e5%a6%82%e4%bd%95%e6%9b%bf%e6%8d%a2list","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/947484.html","title":{"rendered":"python\u5982\u4f55\u66ff\u6362list"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25083230\/6e325c43-1bf2-451a-9cd4-d27c8d45feab.webp\" alt=\"python\u5982\u4f55\u66ff\u6362list\" \/><\/p>\n<p><p> <strong>\u5728Python\u4e2d\uff0c\u66ff\u6362\u5217\u8868\u4e2d\u7684\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff0c\u5305\u62ec\u4f7f\u7528\u7d22\u5f15\u76f4\u63a5\u8d4b\u503c\u3001\u5207\u7247\u64cd\u4f5c\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u7b49\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u901a\u8fc7\u7d22\u5f15\u76f4\u63a5\u5bf9\u6307\u5b9a\u4f4d\u7f6e\u7684\u5143\u7d20\u8fdb\u884c\u8d4b\u503c\u3002\u5207\u7247\u64cd\u4f5c\u5141\u8bb8\u5bf9\u5217\u8868\u7684\u591a\u4e2a\u5143\u7d20\u8fdb\u884c\u6279\u91cf\u66ff\u6362\uff0c\u800c\u5217\u8868\u63a8\u5bfc\u5f0f\u5219\u53ef\u4ee5\u5728\u751f\u6210\u65b0\u5217\u8868\u7684\u540c\u65f6\u66ff\u6362\u5143\u7d20\u3002<\/strong>\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\u53ca\u5176\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u3001\u4f7f\u7528\u7d22\u5f15\u76f4\u63a5\u8d4b\u503c<\/p>\n<\/p>\n<p><p>\u5728Python\u4e2d\uff0c\u5217\u8868\u662f\u53ef\u53d8\u7684\u6570\u636e\u7c7b\u578b\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u76f4\u63a5\u66f4\u6539\u5217\u8868\u4e2d\u7684\u5143\u7d20\u3002\u8fd9\u79cd\u65b9\u6cd5\u7684\u4f18\u70b9\u662f\u7b80\u5355\u76f4\u63a5\uff0c\u9002\u5408\u5bf9\u5355\u4e2a\u6216\u5c11\u91cf\u5143\u7d20\u8fdb\u884c\u66ff\u6362\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [1, 2, 3, 4, 5]<\/p>\n<p>my_list[2] = 9  # \u5c06\u7d22\u5f15\u4e3a2\u7684\u5143\u7d20\u66ff\u6362\u4e3a9<\/p>\n<p>print(my_list)  # \u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a[1, 2, 9, 4, 5]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u5df2\u77e5\u8981\u66ff\u6362\u7684\u5143\u7d20\u4f4d\u7f6e\u7684\u60c5\u51b5\u3002\u5f53\u5217\u8868\u8f83\u5c0f\u65f6\uff0c\u8fd9\u79cd\u65b9\u6cd5\u975e\u5e38\u6709\u6548\u4e14\u6613\u4e8e\u7406\u89e3\u3002<\/p>\n<\/p>\n<p><p>\u4e8c\u3001\u4f7f\u7528\u5207\u7247\u64cd\u4f5c<\/p>\n<\/p>\n<p><p>Python\u7684\u5207\u7247\u64cd\u4f5c\u5141\u8bb8\u5bf9\u5217\u8868\u4e2d\u8fde\u7eed\u7684\u591a\u4e2a\u5143\u7d20\u8fdb\u884c\u6279\u91cf\u66ff\u6362\u3002\u5207\u7247\u64cd\u4f5c\u4e0d\u4ec5\u9002\u7528\u4e8e\u8bbf\u95ee\u5217\u8868\u7684\u90e8\u5206\u5143\u7d20\uff0c\u4e5f\u53ef\u4ee5\u7528\u4e8e\u4fee\u6539\u5217\u8868\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [1, 2, 3, 4, 5]<\/p>\n<p>my_list[1:3] = [8, 9]  # \u5c06\u7d22\u5f151\u52302\u7684\u5143\u7d20\u66ff\u6362\u4e3a8\u548c9<\/p>\n<p>print(my_list)  # \u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a[1, 8, 9, 4, 5]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5207\u7247\u64cd\u4f5c\u9002\u5408\u4e8e\u9700\u8981\u66ff\u6362\u5217\u8868\u4e2d\u8fde\u7eed\u591a\u4e2a\u5143\u7d20\u7684\u60c5\u51b5\u3002\u5b83\u7684\u7075\u6d3b\u6027\u5728\u4e8e\u53ef\u4ee5\u66ff\u6362\u7684\u5143\u7d20\u6570\u91cf\u4e0d\u5fc5\u4e0e\u539f\u5207\u7247\u7684\u5143\u7d20\u6570\u91cf\u76f8\u540c\u3002<\/p>\n<\/p>\n<p><p>\u4e09\u3001\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f<\/p>\n<\/p>\n<p><p>\u5217\u8868\u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u7b80\u6d01\u7684\u65b9\u5f0f\u6765\u751f\u6210\u65b0\u7684\u5217\u8868\uff0c\u540c\u65f6\u53ef\u4ee5\u5bf9\u539f\u5217\u8868\u7684\u5143\u7d20\u8fdb\u884c\u66ff\u6362\u3002\u5b83\u5c24\u5176\u9002\u5408\u4e8e\u9700\u8981\u5bf9\u5217\u8868\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u6761\u4ef6\u66ff\u6362\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">my_list = [1, 2, 3, 4, 5]<\/p>\n<p>new_list = [x if x != 3 else 9 for x in my_list]  # \u5c063\u66ff\u6362\u4e3a9<\/p>\n<p>print(new_list)  # \u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a[1, 2, 9, 4, 5]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5217\u8868\u63a8\u5bfc\u5f0f\u5728\u66ff\u6362\u8fc7\u7a0b\u4e2d\u751f\u6210\u4e86\u4e00\u4e2a\u65b0\u7684\u5217\u8868\uff0c\u800c\u4e0d\u4fee\u6539\u539f\u5217\u8868\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u5408\u4e8e\u9700\u8981\u4fdd\u5b58\u539f\u5217\u8868\u4e0d\u53d8\uff0c\u540c\u65f6\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u66ff\u6362\u540e\u7684\u5217\u8868\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n<p><p>\u56db\u3001\u4f7f\u7528\u5185\u7f6e\u51fd\u6570replace<\/p>\n<\/p>\n<p><p>\u867d\u7136\u5217\u8868\u672c\u8eab\u6ca1\u6709replace\u65b9\u6cd5\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u81ea\u5b9a\u4e49\u51fd\u6570\u6765\u5b9e\u73b0\u7c7b\u4f3c\u7684\u529f\u80fd\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u5408\u4e8e\u9700\u8981\u5728\u5217\u8868\u4e2d\u66ff\u6362\u6240\u6709\u51fa\u73b0\u7684\u67d0\u4e2a\u503c\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">def replace_values(lst, old_value, new_value):<\/p>\n<p>    return [new_value if x == old_value else x for x in lst]<\/p>\n<p>my_list = [1, 2, 3, 4, 3]<\/p>\n<p>my_list = replace_values(my_list, 3, 9)  # \u5c06\u6240\u67093\u66ff\u6362\u4e3a9<\/p>\n<p>print(my_list)  # \u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a[1, 2, 9, 4, 9]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u79cd\u65b9\u6cd5\u901a\u8fc7\u904d\u5386\u5217\u8868\u5e76\u68c0\u67e5\u6bcf\u4e2a\u5143\u7d20\u662f\u5426\u9700\u8981\u66ff\u6362\u6765\u5b9e\u73b0\u3002\u5b83\u9002\u5408\u4e8e\u9700\u8981\u6279\u91cf\u66ff\u6362\u5217\u8868\u4e2d\u6240\u6709\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u7684\u5143\u7d20\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n<p><p>\u4e94\u3001\u4f7f\u7528Numpy\u5e93\u8fdb\u884c\u66ff\u6362<\/p>\n<\/p>\n<p><p>\u5bf9\u4e8e\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\uff0cNumpy\u5e93\u63d0\u4f9b\u4e86\u66f4\u9ad8\u6548\u7684\u65b9\u6cd5\u6765\u66ff\u6362\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002\u867d\u7136Numpy\u4e3b\u8981\u7528\u4e8e\u6570\u7ec4\u64cd\u4f5c\uff0c\u4f46\u6570\u7ec4\u548c\u5217\u8868\u4e4b\u95f4\u53ef\u4ee5\u76f8\u4e92\u8f6c\u6362\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p>my_list = [1, 2, 3, 4, 5]<\/p>\n<p>array = np.array(my_list)<\/p>\n<p>array[array == 3] = 9  # \u5c06\u6240\u67093\u66ff\u6362\u4e3a9<\/p>\n<p>my_list = array.tolist()<\/p>\n<p>print(my_list)  # \u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a[1, 2, 9, 4, 5]<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>Numpy\u7684\u4f18\u52bf\u5728\u4e8e\u5176\u9ad8\u6548\u7684\u6570\u7ec4\u64cd\u4f5c\u80fd\u529b\uff0c\u9002\u5408\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\u6216\u9700\u8981\u8fdb\u884c\u590d\u6742\u6570\u503c\u8ba1\u7b97\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n<p><p>\u603b\u7ed3<\/p>\n<\/p>\n<p><p>\u7efc\u4e0a\u6240\u8ff0\uff0cPython\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u5f0f\u6765\u66ff\u6362\u5217\u8868\u4e2d\u7684\u5143\u7d20\uff0c\u4ece\u7b80\u5355\u7684\u7d22\u5f15\u8d4b\u503c\u5230\u590d\u6742\u7684\u6761\u4ef6\u66ff\u6362\uff0c\u5404\u6709\u5176\u9002\u7528\u7684\u573a\u666f\u548c\u4f18\u7f3a\u70b9\u3002\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u6267\u884c\u6548\u7387\u3002\u5728\u5904\u7406\u4e0d\u540c\u7684\u6570\u636e\u65f6\uff0c\u5e94\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u6700\u5408\u9002\u7684\u66ff\u6362\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u66ff\u6362\u5217\u8868\u4e2d\u7684\u7279\u5b9a\u5143\u7d20\uff1f<\/strong><br \/>\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u66ff\u6362\u5217\u8868\u4e2d\u7684\u7279\u5b9a\u5143\u7d20\u3002\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u7d22\u5f15\u76f4\u63a5\u8bbf\u95ee\u5217\u8868\u5e76\u8fdb\u884c\u8d4b\u503c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u8981\u5c06\u5217\u8868\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u66ff\u6362\u4e3a\u65b0\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>my_list[0] = new_value<\/code> \u7684\u65b9\u5f0f\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u4e5f\u662f\u4e00\u79cd\u6709\u6548\u7684\u66ff\u6362\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6839\u636e\u6761\u4ef6\u751f\u6210\u4e00\u4e2a\u65b0\u5217\u8868\uff0c\u4ece\u800c\u5b9e\u73b0\u66ff\u6362\u3002<\/p>\n<p><strong>Python\u4e2d\u662f\u5426\u53ef\u4ee5\u4f7f\u7528\u65b9\u6cd5\u66ff\u6362\u591a\u4e2a\u5217\u8868\u5143\u7d20\uff1f<\/strong><br \/>\u786e\u5b9e\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u5185\u7f6e\u65b9\u6cd5\u6765\u66ff\u6362\u591a\u4e2a\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u901a\u8fc7\u5faa\u73af\u904d\u5386\u5217\u8868\u5e76\u8fdb\u884c\u6761\u4ef6\u5224\u65ad\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u591a\u4e2a\u5143\u7d20\u7684\u66ff\u6362\u3002\u540c\u65f6\uff0c\u4f7f\u7528 <code>map()<\/code> \u51fd\u6570\u6216\u8005 <code>filter()<\/code> \u51fd\u6570\u4e5f\u80fd\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u5b9e\u73b0\u6279\u91cf\u66ff\u6362\u7684\u6548\u679c\uff0c\u5c24\u5176\u662f\u5f53\u8981\u66ff\u6362\u7684\u5143\u7d20\u7b26\u5408\u7279\u5b9a\u6761\u4ef6\u65f6\uff0c\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u7ed3\u5408\u6761\u4ef6\u5224\u65ad\u5c06\u66f4\u52a0\u9ad8\u6548\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\uff0c\u4f7f\u7528\u5207\u7247\u66ff\u6362\u5217\u8868\u7684\u4e00\u90e8\u5206\u6709\u4ec0\u4e48\u4f18\u70b9\uff1f<\/strong><br \/>\u4f7f\u7528\u5207\u7247\u6765\u66ff\u6362\u5217\u8868\u7684\u4e00\u90e8\u5206\u662f\u4e00\u4e2a\u975e\u5e38\u7b80\u6d01\u6709\u6548\u7684\u65b9\u6cd5\u3002\u8fd9\u79cd\u65b9\u5f0f\u4e0d\u4ec5\u53ef\u4ee5\u4e00\u6b21\u6027\u66ff\u6362\u591a\u4e2a\u5143\u7d20\uff0c\u800c\u4e14\u8bed\u6cd5\u7b80\u6d01\uff0c\u5bb9\u6613\u9605\u8bfb\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 <code>my_list[start:end] = new_values<\/code> \u53ef\u4ee5\u5c06\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\u66ff\u6362\u4e3a\u65b0\u7684\u503c\u3002\u6b64\u65b9\u6cd5\u8fd8\u80fd\u591f\u4fdd\u6301\u5217\u8868\u7684\u957f\u5ea6\u4e00\u81f4\uff0c\u975e\u5e38\u9002\u5408\u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u65f6\u8fdb\u884c\u9ad8\u6548\u64cd\u4f5c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u66ff\u6362\u5217\u8868\u4e2d\u7684\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff0c\u5305\u62ec\u4f7f\u7528\u7d22\u5f15\u76f4\u63a5\u8d4b\u503c\u3001\u5207\u7247\u64cd\u4f5c\u3001\u5217\u8868\u63a8\u5bfc\u5f0f\u7b49\u3002\u6700\u5e38\u7528\u7684 [&hellip;]","protected":false},"author":3,"featured_media":947495,"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\/947484"}],"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=947484"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/947484\/revisions"}],"predecessor-version":[{"id":947501,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/947484\/revisions\/947501"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/947495"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=947484"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=947484"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=947484"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}