{"id":205000,"date":"2025-05-29T17:13:03","date_gmt":"2025-05-29T09:13:03","guid":{"rendered":"https:\/\/server.hk\/cnblog\/205000\/"},"modified":"2025-05-29T17:13:03","modified_gmt":"2025-05-29T09:13:03","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e7%94%a8%e5%85%83%e7%bb%84%e5%8c%85%e8%a3%b9%e6%95%b0%e7%bb%84%e5%90%8e%ef%bc%8c%e5%ae%83%e4%bb%8d%e7%84%b6%e4%b8%8d%e8%83%bd%e4%bd%9c%e4%b8%ba%e5%ad%97%e5%85%b8%e7%9a%84","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/205000\/","title":{"rendered":"\u4e3a\u4ec0\u4e48\u7528\u5143\u7ec4\u5305\u88f9\u6570\u7ec4\u540e\uff0c\u5b83\u4ecd\u7136\u4e0d\u80fd\u4f5c\u4e3a\u5b57\u5178\u7684\u952e\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u4e3a\u4ec0\u4e48\u7528\u5143\u7ec4\u5305\u88f9\u6570\u7ec4\u540e\uff0c\u5b83\u4ecd\u7136\u4e0d\u80fd\u4f5c\u4e3a\u5b57\u5178\u7684\u952e\uff1f<\/h1>\n<p>\u5c0f\u4f19\u4f34\u4eec\u5bf9\u6587\u7ae0\u7f16\u7a0b\u611f\u5174\u8da3\u5417\uff1f\u662f\u5426\u6b63\u5728\u5b66\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff1f\u5982\u679c\u662f\uff0c\u90a3\u4e48\u672c\u6587\u300a\u4e3a\u4ec0\u4e48\u7528\u5143\u7ec4\u5305\u88f9\u6570\u7ec4\u540e\uff0c\u5b83\u4ecd\u7136\u4e0d\u80fd\u4f5c\u4e3a\u5b57\u5178\u7684\u952e\uff1f\u300b\uff0c\u5c31\u5f88\u9002\u5408\u4f60\uff0c\u672c\u7bc7\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec\u3002\u5728\u4e4b\u540e\u7684\u6587\u7ae0\u4e2d\u4e5f\u4f1a\u591a\u591a\u5206\u4eab\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241121\/1732165604673ebfe4a73ff.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>python\u57fa\u7840\uff1a\u4e0d\u53ef\u54c8\u5e0c\u7684\u6570\u7ec4<\/strong><\/p>\n<p>\u4f17\u6240\u5468\u77e5\uff0cpython\u5b57\u5178\u7684\u952e\u503c\u5fc5\u987b\u662f\u54c8\u5e0c\u7c7b\u578b\u3002\u800c\u6570\u7ec4\u662f\u88ab\u8ba4\u4e3a\u4e0d\u53ef\u54c8\u5e0c\u7684\uff0c\u56e0\u6b64\u65e0\u6cd5\u4f5c\u4e3a\u5b57\u5178\u7684\u952e\u3002\u7136\u800c\uff0c\u4ee5\u4e0b\u4ee3\u7801\u5f15\u53d1\u4e86\u4e00\u4e2a\u7591\u60d1\uff1a<\/p>\n<pre>a[(1, 2)] = 'abc'\na[([1, 2],)] = 'def'<\/pre>\n<p>\u7b2c\u4e00\u4e2a\u8d4b\u503c\u6210\u529f\u4e86\uff0c\u56e0\u4e3a(1, 2)\u662f\u4e00\u4e2a\u53ef\u54c8\u5e0c\u7684\u5143\u7ec4\u3002\u4f46\u7b2c\u4e8c\u4e2a\u8d4b\u503c\u5931\u8d25\uff0c\u63d0\u793a\u5217\u8868\u7c7b\u578b\u4e0d\u53ef\u54c8\u5e0c\u3002\u6309\u7406\u6765\u8bf4\uff0c([1, 2],)\u5305\u88f9\u540e\u5e94\u5f53\u662f\u4e00\u4e2a\u53ef\u54c8\u5e0c\u7684\u5143\u7ec4\uff0c\u4e3a\u4ec0\u4e48\u8fd8\u4f1a\u62a5\u9519\uff1f<\/p>\n<p><strong>\u89e3\u91ca\uff1a<\/strong><\/p>\n<p>\u4e0d\u53ef\u54c8\u5e0c\u7c7b\u578b\u6307\u7684\u662f\u65e0\u6cd5\u751f\u6210\u7528\u4e8e\u5b57\u5178\u952e\u67e5\u627e\u7684\u54c8\u5e0c\u503c\u7684\u7c7b\u578b\u3002\u6570\u7ec4\u672c\u8eab\u4e0d\u53ef\u54c8\u5e0c\uff0c\u4f46\u7528()\u5305\u88f9\u540e\u7684\u5143\u7ec4\u786e\u5b9e\u53ef\u54c8\u5e0c\u3002<\/p>\n<p>\u7136\u800c\uff0cpython\u4e2d\u6709\u4e00\u4e2a\u4f8b\u5916\uff1a<strong>\u4e0d\u53ef\u53d8\u5bb9\u5668\u7684\u53ef\u54c8\u5e0c\u6027\u53d6\u51b3\u4e8e\u5176\u5143\u7d20\u7684\u53ef\u54c8\u5e0c\u6027\u3002<\/strong>\u4e5f\u5c31\u662f\u8bf4\uff0c\u5143\u7ec4\u4e2d\u7684\u5143\u7d20\u5fc5\u987b\u5168\u90e8\u53ef\u54c8\u5e0c\uff0c\u5143\u7ec4\u624d\u80fd\u6210\u4e3a\u4e00\u4e2a\u53ef\u54c8\u5e0c\u7c7b\u578b\u3002\u672c\u4f8b\u4e2d\uff0c\u5143\u7ec4\u5143\u7d20\u4e2d\u7684\u6570\u7ec4\u4e0d\u53ef\u54c8\u5e0c\uff0c\u56e0\u6b64\u6574\u4e2a\u5143\u7ec4\u4e5f\u53d8\u5f97\u4e0d\u53ef\u54c8\u5e0c\u3002<\/p>\n<p><strong>\u6269\u5c55\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>from typing import Hashable\nclass example(object):\n    def __init__(self, a):\n        self.value = a\n    def __eq__(self, rhs):\n        return self.value == rhs.value\n    def __hash__(self):\n        return hash(self.value)\n\n# a\u662f\u4e00\u4e2a\u53ef\u54c8\u5e0c\u7684\u81ea\u5b9a\u4e49\u7c7b\na = example(2)\n# \u521d\u59cb\u5316\u5b57\u5178\u65f6\uff0ca\u4f5c\u4e3a\u952e\u653e\u5165\u5b57\u5178\nd = {a: \"first\"}\n# \u4fee\u6539a\u7684\u503c\na.data = 2\n# \u518d\u6b21\u5c06a\u4f5c\u4e3a\u952e\u63d2\u5165\u5b57\u5178\nd[a] = 'second'<\/pre>\n<p>\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0ca\u662f\u4e00\u4e2a\u53ef\u54c8\u5e0c\u7684\u81ea\u5b9a\u4e49\u7c7b\u3002\u867d\u7136\u5b83\u7684\u503c\u5728\u5b57\u5178\u7684\u9996\u6b21\u8d4b\u503c\u540e\u53d1\u751f\u4e86\u6539\u53d8\uff0c\u4f46\u7531\u4e8e\u5176\u5b9a\u4e49\u4e86\u54c8\u5e0c\u51fd\u6570\uff0c\u5b57\u5178\u4ecd\u7136\u53ef\u4ee5\u627e\u5230\u8be5\u952e\u503c\u3002<\/p>\n<p><strong>\u7ed3\u8bba\uff1a<\/strong><\/p>\n<p>\u867d\u7136\u6570\u7ec4\u672c\u8eab\u4e0d\u53ef\u54c8\u5e0c\uff0c\u4f46\u7528()\u5305\u88f9\u540e\uff0c\u5982\u679c\u6570\u7ec4\u5143\u7d20\u5168\u90e8\u53ef\u54c8\u5e0c\uff0c\u90a3\u4e48\u8fd9\u4e2a\u5143\u7ec4\u5c31\u6210\u4e3a\u4e00\u4e2a\u53ef\u54c8\u5e0c\u7c7b\u578b\u3002\u8fd9\u4e2a\u7279\u6027\u6e90\u4e8epython\u4e2d\u4e0d\u53ef\u53d8\u5bb9\u5668\u7684\u53ef\u54c8\u5e0c\u6027\u4f9d\u8d56\u4e8e\u5176\u5143\u7d20\u7684\u53ef\u54c8\u5e0c\u6027\u8fd9\u4e00\u89c4\u5219\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u4e3a\u4ec0\u4e48\u7528\u5143\u7ec4\u5305\u88f9\u6570\u7ec4\u540e\uff0c\u5b83\u4ecd\u7136\u4e0d\u80fd\u4f5c\u4e3a\u5b57\u5178\u7684\u952e\uff1f\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e3a\u4ec0\u4e48\u7528\u5143\u7ec4\u5305\u88f9\u6570\u7ec4\u540e\uff0c\u5b83\u4ecd\u7136\u4e0d&#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-205000","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205000","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=205000"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205000\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=205000"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=205000"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=205000"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}