\u5b57\u5178\u63a8\u5bfc\u5f0f\uff08dict comprehensions\uff09<\/strong><\/span>
\n\u5b57\u5178\u63a8\u5bfc\u548c\u5217\u8868\u63a8\u5bfc\u7684\u4f7f\u7528\u65b9\u6cd5\u662f\u7c7b\u4f3c\u7684\u3002\u8fd9\u91cc\u6709\u4e2a\u6211\u6700\u8fd1\u53d1\u73b0\u7684\u4f8b\u5b50\uff1a<\/p>\n

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Code: <\/strong>[\u5168\u9009]<\/a> [Expand\/Collapse]<\/a><\/div>\n
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mcase =<\/span> {<\/span>‘a’<\/span>: 10<\/span>,<\/span> ‘b’<\/span>: 34<\/span>,<\/span> ‘A’<\/span>: 7<\/span>,<\/span> ‘Z’<\/span>: 3<\/span>}<\/span><\/div>\n<\/li>\n
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<\/div>\n<\/li>\n
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mcase_frequency =<\/span> {<\/span><\/div>\n<\/li>\n
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k.lower<\/span>(<\/span>)<\/span>: mcase.get<\/span>(<\/span>k.lower<\/span>(<\/span>)<\/span>,<\/span> 0<\/span>)<\/span> + mcase.get<\/span>(<\/span>k.upper<\/span>(<\/span>)<\/span>,<\/span> 0<\/span>)<\/span><\/div>\n<\/li>\n
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for<\/span> k in<\/span> mcase.keys<\/span>(<\/span>)<\/span><\/div>\n<\/li>\n
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}<\/span><\/div>\n<\/li>\n
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<\/div>\n<\/li>\n
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# mcase_frequency == {‘a’: 17, ‘z’: 3, ‘b’: 34}<\/span><\/div>\n<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n
GeSHi © Codebox Plus Extension<\/div>\n<\/div>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\u6211\u4eec\u628a\u540c\u4e00\u4e2a\u5b57\u6bcd\u4f46\u4e0d\u540c\u5927\u5c0f\u5199\u7684\u503c\u5408\u5e76\u8d77\u6765\u4e86\u3002<\/p>\n
\u5c31\u6211\u4e2a\u4eba\u6765\u8bf4\u6ca1\u6709\u5927\u91cf\u4f7f\u7528\u5b57\u5178\u63a8\u5bfc\u5f0f\u3002<\/p>\n
\u4f60\u8fd8\u53ef\u4ee5\u5feb\u901f\u5bf9\u6362\u4e00\u4e2a\u5b57\u5178\u7684\u952e\u548c\u503c\uff1a<\/p>\n
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Code: <\/strong>[\u5168\u9009]<\/a> [Expand\/Collapse]<\/a><\/div>\n
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{<\/span>v: k for<\/span> k,<\/span> v in<\/span> some_dict.items<\/span>(<\/span>)<\/span>}<\/span><\/div>\n<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n
GeSHi © Codebox Plus Extension<\/div>\n<\/div>\n
\u539f\u6587\u4f5c\u8005: BG6RSH | \u67e5\u770b\u539f\u5e16<\/a><\/small><\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b57\u5178\u63a8\u5bfc\u5f0f\uff08dict comprehensions\uff09 \u5b57\u5178\u63a8\u5bfc\u548c\u5217\u8868\u63a8\u5bfc\u7684\u4f7f\u7528\u65b9 … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[105],"tags":[],"class_list":["post-1470","post","type-post","status-publish","format-standard","hentry","category-105"],"_links":{"self":[{"href":"https:\/\/www.tansoo.cn\/index.php?rest_route=\/wp\/v2\/posts\/1470","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tansoo.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tansoo.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tansoo.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tansoo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1470"}],"version-history":[{"count":0,"href":"https:\/\/www.tansoo.cn\/index.php?rest_route=\/wp\/v2\/posts\/1470\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.tansoo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tansoo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tansoo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}