{"id":204172,"date":"2025-05-29T12:16:58","date_gmt":"2025-05-29T04:16:58","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204172\/"},"modified":"2025-05-29T12:16:58","modified_gmt":"2025-05-29T04:16:58","slug":"python-map-%e5%87%bd%e6%95%b0%e4%b8%ba%e4%bd%95%e5%8f%aa%e8%bf%94%e5%9b%9e-map-%e5%af%b9%e8%b1%a1%ef%bc%8c%e8%80%8c%e4%b8%8d%e6%98%af%e6%89%a7%e8%a1%8c%e5%87%bd%e6%95%b0%e5%b9%b6%e6%89%93%e5%8d%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204172\/","title":{"rendered":"Python map \u51fd\u6570\u4e3a\u4f55\u53ea\u8fd4\u56de map \u5bf9\u8c61\uff0c\u800c\u4e0d\u662f\u6267\u884c\u51fd\u6570\u5e76\u6253\u5370\u7ed3\u679c\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Python map \u51fd\u6570\u4e3a\u4f55\u53ea\u8fd4\u56de map \u5bf9\u8c61\uff0c\u800c\u4e0d\u662f\u6267\u884c\u51fd\u6570\u5e76\u6253\u5370\u7ed3\u679c\uff1f <\/h1>\n<p>\u5728\u6587\u7ae0\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929\u5c31\u6574\u7406\u5206\u4eab\u300aPython map \u51fd\u6570\u4e3a\u4f55\u53ea\u8fd4\u56de map \u5bf9\u8c61\uff0c\u800c\u4e0d\u662f\u6267\u884c\u51fd\u6570\u5e76\u6253\u5370\u7ed3\u679c\uff1f \u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241030\/1730293960672230c894d81.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>python map \u51fd\u6570\u4e3a\u4f55\u53ea\u8fd4\u56de map \u5bf9\u8c61\uff1f<\/strong><\/p>\n<p>\u5728 python \u4e2d\uff0cmap \u51fd\u6570\u7528\u4e8e\u5c06\u4e00\u4e2a\u51fd\u6570\u5e94\u7528\u5230\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u3002\u7136\u800c\uff0c\u4e0e\u9884\u671f\u76f8\u53cd\uff0cmap \u51fd\u6570\u53ea\u8fd4\u56de\u4e00\u4e2a map \u5bf9\u8c61\uff0c\u800c\u4e0d\u662f\u6267\u884c\u51fd\u6570\u5e76\u6253\u5370\u7ed3\u679c\u3002<\/p>\n<p><strong>\u539f\u56e0\uff1a<\/strong><\/p>\n<p>map \u51fd\u6570\u5e76\u4e0d\u7acb\u5373\u6267\u884c\u7ed9\u5b9a\u7684\u51fd\u6570\u3002\u5b83\u521b\u5efa\u4e86\u4e00\u4e2a map \u5bf9\u8c61\uff0c\u8be5\u5bf9\u8c61\u5305\u542b\u6307\u5411\u53ef\u8fed\u4ee3\u5bf9\u8c61\u4e2d\u6bcf\u4e2a\u5143\u7d20\u7684\u5f15\u7528\u4ee5\u53ca\u8981\u5e94\u7528\u7684\u51fd\u6570\u3002\u5f53\u5bf9 map \u5bf9\u8c61\u8fdb\u884c\u8fed\u4ee3\u65f6\uff0c\u5b83\u4f1a\u4f9d\u6b21\u5bf9\u6bcf\u4e2a\u5143\u7d20\u5e94\u7528\u51fd\u6570\uff0c\u5e76\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u8fed\u4ee3\u5668\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6cd5\uff1a<\/strong><\/p>\n<p>\u8981\u7acb\u5373\u6267\u884c\u51fd\u6570\u5e76\u6253\u5370\u7ed3\u679c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528 list() \u5c06 map \u5bf9\u8c61\u8f6c\u6362\u4e3a\u5217\u8868\uff0c\u8fd9\u4f1a\u5f3a\u5236\u6267\u884c\u6240\u6709\u51fd\u6570\u8c03\u7528\u5e76\u521b\u5efa\u5217\u8868\u7684\u7ed3\u679c\u3002<\/li>\n<\/ul>\n<pre>print(list(map(lambda x: print(x), [1, 2, 3])))\n# [none, none, none]<\/pre>\n<ul>\n<li>\u8fed\u4ee3 map \u5bf9\u8c61\uff0c\u4f7f\u7528 for \u5faa\u73af\u6216\u5217\u8868\u89e3\u6790\u624b\u52a8\u6267\u884c\u51fd\u6570\u8c03\u7528\u3002<\/li>\n<\/ul>\n<pre>for item in map(lambda x: print(x), [1, 2, 3]):\n    pass\n# [None, None, None]<\/pre>\n<p>\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300aPython map \u51fd\u6570\u4e3a\u4f55\u53ea\u8fd4\u56de map \u5bf9\u8c61\uff0c\u800c\u4e0d\u662f\u6267\u884c\u51fd\u6570\u5e76\u6253\u5370\u7ed3\u679c\uff1f \u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Python map \u51fd\u6570\u4e3a\u4f55\u53ea&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-204172","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204172","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=204172"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204172\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}