{"id":204473,"date":"2025-05-29T13:22:11","date_gmt":"2025-05-29T05:22:11","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204473\/"},"modified":"2025-05-29T13:22:11","modified_gmt":"2025-05-29T05:22:11","slug":"python-%e4%b8%ad%e7%9a%84-none-%e5%92%8c-%e7%a9%ba%e5%88%97%e8%a1%a8%ef%bc%9a%e6%9c%89%e4%bb%80%e4%b9%88%e5%8c%ba%e5%88%ab%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204473\/","title":{"rendered":"Python \u4e2d\u7684 None \u548c \u7a7a\u5217\u8868\uff1a\u6709\u4ec0\u4e48\u533a\u522b\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

Python \u4e2d\u7684 None \u548c \u7a7a\u5217\u8868\uff1a\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/h1>\n

\u5728IT\u884c\u4e1a\u8fd9\u4e2a\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u5f88\u5feb\u7684\u884c\u4e1a\uff0c\u53ea\u6709\u4e0d\u505c\u6b62\u7684\u5b66\u4e60\uff0c\u624d\u4e0d\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u5982\u679c\u4f60\u662f\u6587\u7ae0\u5b66\u4e60\u8005\uff0c\u90a3\u4e48\u672c\u6587\u300aPython \u4e2d\u7684 None \u548c \u7a7a\u5217\u8868\uff1a\u6709\u4ec0\u4e48\u533a\u522b\uff1f\u300b\u5c31\u5f88\u9002\u5408\u4f60\uff01\u672c\u7bc7\u5185\u5bb9\u4e3b\u8981\u5305\u62ec##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

<\/p>\n

python\u4e2d\u7684\u53d8\u91cf\u7c7b\u578b\uff1anone\u548c\u7a7a\u5217\u8868<\/p>\n

\u5728python\u4e2d\uff0cnone\u548c\u7a7a\u5217\u8868\u662f\u4e24\u4e2a\u622a\u7136\u4e0d\u540c\u7684\u53d8\u91cf\u7c7b\u578b\uff0c\u5b83\u4eec\u5728\u4f7f\u7528\u548c\u610f\u4e49\u4e0a\u90fd\u6709\u5f88\u5927\u5dee\u5f02\u3002<\/p>\n

\u7a7a\u5217\u8868<\/strong><\/p>\n

\u7a7a\u5217\u8868\u662f\u7528\u4e2d\u62ec\u53f7\u5b9a\u4e49\u7684\uff0c\u5185\u90e8\u6ca1\u6709\u5143\u7d20\uff0c\u4f8b\u5982\uff1a<\/p>\n

array = []<\/pre>\n
\u7a7a\u5217\u8868\u672c\u8d28\u4e0a\u662f\u4e00\u4e2alist\u5bf9\u8c61\uff0c\u5b83\u5177\u6709\u6240\u6709list\u7684\u65b9\u6cd5\u548c\u5c5e\u6027\uff0c\u4f8b\u5982append\u3001pop\u548csort\u3002\u4f60\u53ef\u4ee5\u50cf\u64cd\u4f5c\u666e\u901a\u5217\u8868\u4e00\u6837\u5bf9\u5b83\u8fdb\u884c\u64cd\u4f5c\uff0c\u6bd4\u5982\u6dfb\u52a0\u3001\u5220\u9664\u548c\u6392\u5e8f\u5143\u7d20\u3002<\/p>\n
none<\/strong><\/p>\n
\u53e6\u4e00\u65b9\u9762\uff0cnone\u662f\u4e00\u4e2a\u7279\u6b8a\u7684\u53d8\u91cf\u7c7b\u578b\uff0c\u8868\u793a\u4e0d\u5408\u6cd5\u6216\u672a\u77e5\u7684\u503c\u3002\u5b83\u662f\u4e00\u4e2a\u5185\u7f6e\u5e38\u91cf\uff0c\u53ef\u4ee5\u7528none\u5f15\u7528\uff1a<\/p>\n
array = None<\/pre>\n
none\u4e0d\u5c5e\u4e8e\u4efb\u4f55\u7279\u5b9a\u7c7b\u578b\uff0c\u56e0\u6b64\u4e0d\u5177\u6709\u4efb\u4f55\u65b9\u6cd5\u6216\u5c5e\u6027\u3002\u5b83\u901a\u5e38\u7528\u4e8e\u8868\u793a\u4e00\u4e2a\u53d8\u91cf\u5c1a\u672a\u521d\u59cb\u5316\u6216\u5305\u542b\u4e00\u4e2a\u65e0\u6548\u503c\u3002<\/p>\n
\u56e0\u6b64\uff0c\u603b\u7ed3\u4e00\u4e0b\uff1a<\/p>\n
    \n
  • \u7a7a\u5217\u8868\u662f\u4e00\u4e2alist\u5bf9\u8c61\uff0c\u53ef\u4ee5\u5b58\u50a8\u5143\u7d20\u5e76\u4f7f\u7528list\u7684\u65b9\u6cd5\u3002<\/li>\n
  • none\u662f\u4e00\u4e2a\u7279\u6b8a\u53d8\u91cf\u7c7b\u578b\uff0c\u8868\u793a\u4e00\u4e2a\u672a\u5b9a\u4e49\u6216\u65e0\u6548\u7684\u503c\u3002<\/li>\n<\/ul>\n
    \u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300aPython \u4e2d\u7684 None \u548c \u7a7a\u5217\u8868\uff1a\u6709\u4ec0\u4e48\u533a\u522b\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    Python \u4e2d\u7684 None \u548c...<\/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-204473","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204473","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=204473"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204473\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204473"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204473"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}