{"id":204068,"date":"2025-05-29T09:32:16","date_gmt":"2025-05-29T01:32:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204068\/"},"modified":"2025-05-29T09:32:16","modified_gmt":"2025-05-29T01:32:16","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-python-%e5%90%88%e5%b9%b6%e5%a4%9a%e4%b8%aa%e5%ad%97%e5%85%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204068\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 Python \u5408\u5e76\u591a\u4e2a\u5b57\u5178"},"content":{"rendered":"

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

\u5982\u4f55\u4f7f\u7528 Python \u5408\u5e76\u591a\u4e2a\u5b57\u5178<\/h1>\n

\u600e\u4e48\u5165\u95e8\u6587\u7ae0\u7f16\u7a0b\uff1f\u9700\u8981\u5b66\u4e60\u54ea\u4e9b\u77e5\u8bc6\u70b9\uff1f\u8fd9\u662f\u65b0\u624b\u4eec\u521a\u63a5\u89e6\u7f16\u7a0b\u65f6\u5e38\u89c1\u7684\u95ee\u9898\uff1b\u4e0b\u9762\u5c31\u6765\u7ed9\u5927\u5bb6\u6574\u7406\u5206\u4eab\u4e00\u4e9b\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u591f\u7ed9\u521d\u5b66\u8005\u4e00\u4e9b\u5e2e\u52a9\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u4ecb\u7ecd\u300a\u5982\u4f55\u4f7f\u7528 Python \u5408\u5e76\u591a\u4e2a\u5b57\u5178\u300b\uff0c\u6d89\u53ca\u5230\uff0c\u6709\u9700\u8981\u7684\u53ef\u4ee5\u6536\u85cf\u4e00\u4e0b<\/p>\n

<\/p>\n

\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u7d22\u5982\u4f55\u4ece python \u4e2d\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u73b0\u6709\u8bcd\u5178\u521b\u5efa\u5b57\u5178\u3002<\/p>\n

\u4e0e\u7f16\u7a0b\u4e2d\u901a\u5e38\u7684\u60c5\u51b5\u4e00\u6837\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u3002<\/p>\n

\n

\u6211\u6700\u8fd1\u5f00\u59cb\u7ec3\u4e60\u82f1\u8bed\u5199\u4f5c\u3002\u5bf9\u4e8e\u4efb\u4f55\u9519\u8bef\uff0c\u6211\u63d0\u524d\u8868\u793a\u6b49\u610f\u3002 \ud83d\ude42<\/p>\n<\/blockquote>\n

\u5148\u51b3\u6761\u4ef6 <\/h4>\n
    \n
  • python \u7684\u57fa\u672c\u4e86\u89e3<\/li>\n<\/ul>\n

    \u9996\u5148\uff0c\u5047\u8bbe\u6211\u4eec\u6709\u4ee5\u4e0b\u5b57\u5178\uff1a<\/p>\n

    dict1 = {\n    'a': 1,\n    'b': 2,\n}\n\ndict2 = {\n    'b': 3,\n    'c': 4,\n}\n<\/pre>\n
    \u4f8b\u5982\uff0c\u8ba9\u6211\u4eec\u4f7f\u7528\u4e0a\u9762\u63d0\u5230\u7684 dict1 \u548c dict2 \u4e2d\u7684\u503c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a dictx \u7684\u65b0\u5b57\u5178\u3002\u6267\u884c\u6b64\u64cd\u4f5c\u7684\u5e38\u7528\u65b9\u6cd5\u662f\u4f7f\u7528 update \u65b9\u6cd5\u3002<\/p>\n
    dictx = {}\n\ndictx.update(dict1)\ndictx.update(dict2)\n<\/pre>\n
    \u6240\u4ee5\uff0cdictx \u5c06\u662f\uff1a<\/p>\n
    print(dictx)\n# output: {'a': 1,'b': 3,'c': 4}\n<\/pre>\n
    \u8fd9\u4e2a\u65b9\u6cd5\u6548\u679c\u5f88\u597d\uff0c\u4f46\u662f\u6211\u4eec\u5fc5\u987b\u4e3a\u6bcf\u4e2a\u60f3\u8981\u5408\u5e76\u5230 dictx \u7684\u5b57\u5178\u8c03\u7528 update \u65b9\u6cd5\u3002\u5982\u679c\u6211\u4eec\u53ef\u4ee5\u5728\u521b\u5efa dictx \u65f6\u4f20\u9012\u6240\u6709\u9700\u8981\u7684\u5b57\u5178\uff0c\u90a3\u4e0d\u662f\u5f88\u6709\u8da3\u5417\uff1f<\/p>\n
    python 3 \u5f15\u5165\u4e86\u4e00\u79cd\u975e\u5e38\u6709\u7528\u7684\u65b9\u6cd5\uff0c\u5373\u4f7f\u7528 ** \u8fd0\u7b97\u7b26\u6765\u5b9e\u73b0\u6b64\u76ee\u7684\u3002<\/p>\n
    dictx = {\n **dict1,\n **dict2,\n}\n\nprint(dictx)\n# output: {'a': 1,'b': 3,'c': 4}\n<\/pre>\n
    \u4f7f\u7528\u4e0a\u8ff0\u65b9\u6cd5\u65f6\uff0c\u6211\u4eec\u9700\u8981\u8bb0\u4f4f\u4e00\u4e9b\u4e8b\u60c5\u3002\u4ec5\u7b2c\u4e00\u7ea7\u503c\u5c06\u88ab\u590d\u5236\u5230\u65b0\u5b57\u5178\u4e2d\u3002\u4f8b\u5982\uff0c\u8ba9\u6211\u4eec\u66f4\u6539\u4e24\u4e2a\u5b57\u5178\u4e2d\u5b58\u5728\u7684\u952e\u201ca\u201d\uff0c\u770b\u770b\u5b83\u4eec\u662f\u5426\u5177\u6709\u76f8\u540c\u7684\u503c\uff1a<\/p>\n
    dict1['a'] = 10\ndictx['a'] = 11\n\nprint(dict1['a'])\n# output: 10\n\nprint(dictx['a'])\n# output: 11\n<\/pre>\n
    \u6211\u4eec\u66f4\u6539\u4e86\u4e24\u4e2a\u5b57\u5178\u4e2d\u952e\u201ca\u201d\u7684\u503c\u3002\u4f46\u662f\uff0c\u5982\u679c dict1 \u4e2d\u7684\u67d0\u4e2a\u503c\u662f\u6570\u636e\u7ed3\u6784\uff08\u4f8b\u5982\u5217\u8868\u3001\u53e6\u4e00\u4e2a\u5b57\u5178\u6216\u590d\u6742\u5bf9\u8c61\uff09\uff0c\u5219\u60c5\u51b5\u4f1a\u53d1\u751f\u53d8\u5316\u3002\u4f8b\u5982\uff1a<\/p>\n
    dict3 = {\n    'a': 1,\n    'b': 2,\n    'c': {\n        'd': 5,\n    },\n}\n<\/pre>\n
    \u6211\u4eec\u5728\u952e\u201cc\u201d\u4e0b\u6709\u4e00\u4e2a dict \u5bf9\u8c61\u3002\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u4ece\u4e2d\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b57\u5178\uff1a<\/p>\n
    dictx = {\n**dict3,\n}\n<\/pre>\n
    \u5c31\u50cf\u524d\u9762\u7684\u4f8b\u5b50\u4e00\u6837\uff0c\u6211\u4eec\u53ef\u80fd\u8ba4\u4e3a dict3 \u7684\u6240\u6709\u5143\u7d20\u90fd\u88ab\u590d\u5236\u4e86\uff0c\u4f46\u8fd9\u5e76\u4e0d\u5b8c\u5168\u51c6\u786e\u3002\u5b9e\u9645\u4e0a\u53d1\u751f\u7684\u662f dict3 \u503c\u7684\u6d45\u62f7\u8d1d<\/strong>\uff0c\u8fd9\u610f\u5473\u7740\u53ea\u6709\u7b2c\u4e00\u7ea7<\/strong>\u503c\u88ab\u91cd\u590d\u3002\u8ba9\u6211\u4eec\u770b\u770b\u5f53\u6211\u4eec\u66f4\u6539\u5b57\u5178\u4e2d\u952e\u201cc\u201d\u4e0b\u7684\u503c\u65f6\u4f1a\u53d1\u751f\u4ec0\u4e48\u3002<\/p>\n
    dictx['c']['d'] = 11\n\nprint(dictx['c']['d'])\n# output: 11\n\nprint(dict3['c']['d'])\n# output: 11 (previous value was 5)\n<\/pre>\n
    \u5bf9\u4e8e\u952e\u201cc\u201d\uff0c\u5b83\u4fdd\u5b58\u5bf9\u53e6\u4e00\u4e2a\u6570\u636e\u7ed3\u6784\uff08\u5728\u672c\u4f8b\u4e2d\u4e3a\u5b57\u5178\uff09\u7684\u5f15\u7528\u3002\u5f53\u6211\u4eec\u66f4\u6539 dict3[‘c’] \u4e2d\u7684\u4efb\u4f55\u503c\u65f6\uff0c\u5b83\u4f1a\u5f71\u54cd\u6240\u6709\u4f7f\u7528 dict3 \u521d\u59cb\u5316\u7684\u5b57\u5178\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5982\u679c\u5176\u4ed6\u5bf9\u8c61\u5177\u6709\u590d\u6742\u7684\u503c\uff08\u4f8b\u5982\u5217\u8868\u3001\u5b57\u5178\u6216\u5176\u4ed6\u5bf9\u8c61\uff09\uff0c\u6211\u4eec\u5728\u521b\u5efa\u5b57\u5178\u65f6\u9700\u8981\u5c0f\u5fc3\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u5bf9\u8c61\u7684\u5c5e\u6027\u4e0d\u4f1a\u91cd\u590d\u3002<\/p>\n
    \u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684\u5b57\u5178\u65b9\u6cd5copy\u3002\u73b0\u5728\uff0c\u5f53\u6211\u4eec\u521b\u5efa dictx \u65f6\uff1a<\/p>\n
    dict3 = {\n    'a': 1,\n    'b': 2,\n    'c': {\n        'd': 5,\n    },\n}\n\ndictx = dict3.copy()\n<\/pre>\n
    copy \u65b9\u6cd5\u4e3a dict3 \u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u521b\u5efa\u4e86\u4e00\u4e2a\u6d45\u8868\u526f\u672c\uff0c\u8fd9\u6709\u52a9\u4e8e\u89e3\u51b3\u6211\u4eec\u7684\u95ee\u9898\u3002<\/p>\n
    \u8fd9\u662f\u53e6\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n
    dictx['c']['d'] = 11\n\nprint(dictx['c']['d'])\n# output: 11\n\nprint(dict3['c']['d'])\n# outuput: 5 (value has not been changed)\n<\/pre>\n
    dictx \u548c dict3 \u4e2d\u7684\u503c\u4e0d\u76f8\u7b49\uff0c\u56e0\u4e3a dict3[‘c’] \u548c dictx[‘c’] \u4e2d\u7684 ‘d’ \u662f\u5bf9\u4e0d\u540c\u5bf9\u8c61\u7684\u5f15\u7528\u3002<\/p>\n
    \u672c\u6587\u65e8\u5728\u7b80\u5355\u5730\u6f14\u793a\u5982\u4f55\u4f7f\u7528\u8be5\u8bed\u8a00\u63d0\u4f9b\u7684\u4e00\u4e9b\u529f\u80fd\u6765\u521b\u5efa\u5b57\u5178<\/em>\uff0c\u4ee5\u53ca\u6bcf\u79cd\u65b9\u6cd5\u7684\u4f18\u7f3a\u70b9\u3002<\/p>\n
    \u5c31\u662f\u8fd9\u6837\u3002<\/p>\n
    \u611f\u8c22\u60a8\u7684\u9605\u8bfb\uff01<\/p>\n
    \u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u5982\u4f55\u4f7f\u7528 Python \u5408\u5e76\u591a\u4e2a\u5b57\u5178\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
          \u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1adev.to \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb\u5220\u9664<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5982\u4f55\u4f7f\u7528 Python \u5408\u5e76\u591a\u4e2a...<\/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-204068","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204068","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=204068"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204068\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204068"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204068"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204068"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}