<\/p>\n
Python \u4e2d\u7684 `hash()` \u51fd\u5f0f\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\uff0c\u5b83\u5c07\u4efb\u4f55\u7269\u4ef6\u8f49\u63db\u70ba\u4e00\u500b\u6574\u6578\uff0c\u9019\u500b\u6574\u6578\u4ee3\u8868\u8457\u8a72\u7269\u4ef6\u7684\u552f\u4e00\u6027\u3002\u9019\u4f7f\u5f97 `hash()` \u51fd\u5f0f\u5728\u8cc7\u6599\u7d50\u69cb\u4e2d\uff08\u5982\u96c6\u5408\u548c\u5b57\u5178\uff09\u9032\u884c\u5feb\u901f\u641c\u5c0b\u6642\u986f\u5f97\u5c24\u70ba\u91cd\u8981\uff0c\u56e0\u70ba\u5b83\u53ef\u4ee5\u6709\u6548\u5730\u964d\u4f4e\u6bd4\u8f03\u7269\u4ef6\u5167\u5bb9\u7684\u9700\u6c42\u3002<\/p>\n
## hash() \u51fd\u5f0f\u7684\u57fa\u672c\u7528\u6cd5<\/p>\n
`hash()` \u51fd\u5f0f\u53ef\u4ee5\u61c9\u7528\u65bc\u591a\u7a2e\u7269\u4ef6\uff0c\u5305\u62ec\u5b57\u4e32\u3001\u6578\u5b57\u3001\u5217\u8868\u3001\u5b57\u5178\u7b49\u3002\u5b83\u7684\u4e3b\u8981\u529f\u80fd\u662f\u5c07\u7269\u4ef6\u8f49\u63db\u70ba\u4e00\u500b\u6574\u6578\uff0c\u9019\u500b\u6574\u6578\u53ef\u4ee5\u7528\u4f86\u8868\u793a\u8a72\u7269\u4ef6\u7684\u552f\u4e00\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u4f7f\u7528\u5834\u666f\u3002<\/p>\n
### \u5b57\u4e32\u6bd4\u8f03\u7bc4\u4f8b<\/p>\n
\u5047\u8a2d\u6211\u5011\u60f3\u8981\u6bd4\u8f03\u5169\u500b\u5b57\u4e32\uff0c`hash()` \u51fd\u5f0f\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u5feb\u901f\u5224\u65b7\u5b83\u5011\u662f\u5426\u76f8\u540c\u3002\u4ee5\u4e0b\u662f\u5177\u9ad4\u7684\u5be6\u4f5c\u7bc4\u4f8b\uff1a<\/p>\n
“`python
\nstr1 = “Hello World”
\nstr2 = “Hello World”<\/p>\n
# \u5c07\u5169\u500b\u5b57\u4e32\u8f49\u63db\u70ba\u6574\u6578
\nhash1 = hash(str1)
\nhash2 = hash(str2)<\/p>\n
# \u6bd4\u8f03\u5169\u500b\u6574\u6578
\nif hash1 == hash2:
\n print(“\u5169\u500b\u5b57\u4e32\u76f8\u540c”)
\nelse:
\n print(“\u5169\u500b\u5b57\u4e32\u4e0d\u540c”)
\n“`<\/p>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u5982\u679c `str1` \u548c `str2` \u542b\u6709\u76f8\u540c\u7684\u5167\u5bb9\uff0c\u5247\u5b83\u5011\u7684\u54c8\u5e0c\u503c `hash1` \u548c `hash2` \u6703\u76f8\u7b49\uff0c\u9019\u6a23\u6211\u5011\u5c31\u80fd\u5920\u78ba\u8a8d\u9019\u5169\u500b\u5b57\u4e32\u662f\u76f8\u540c\u7684\u3002<\/p>\n
### \u7528\u65bc\u5b57\u5178\u7684\u7bc4\u4f8b<\/p>\n
`hash()` \u51fd\u5f0f\u540c\u6a23\u9069\u7528\u65bc\u5b57\u5178\uff0c\u9019\u5728\u8cc7\u6599\u7d50\u69cb\u7684\u64cd\u4f5c\u4e2d\u975e\u5e38\u6709\u7528\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u70ba\u5b57\u5178\u751f\u6210\u54c8\u5e0c\u503c\uff0c\u4e26\u7528\u65bc\u6aa2\u67e5\u67d0\u500b\u7269\u4ef6\u662f\u5426\u5b58\u5728\u65bc\u8cc7\u6599\u96c6\u4e2d\uff1a<\/p>\n
“`python
\n# \u5efa\u7acb\u4e00\u500b\u5b57\u5178
\nmy_dict = {
\n “name”: “John”,
\n “age”: 30
\n}<\/p>\n
# \u5c07\u5b57\u5178\u8f49\u63db\u70ba\u6574\u6578
\nhash_value = hash(frozenset(my_dict.items())) # \u4f7f\u7528 frozenset \u78ba\u4fdd\u5b57\u5178\u53ef\u54c8\u5e0c<\/p>\n
# \u5c07\u6574\u6578\u5b58\u5165\u4e00\u500b\u5217\u8868
\nmy_list = [hash_value]\n
# \u641c\u5c0b\u5217\u8868\u4e2d\u662f\u5426\u6709\u8a72\u6574\u6578
\nif hash_value in my_list:
\n print(“\u627e\u5230\u8a72\u7269\u4ef6”)
\nelse:
\n print(“\u6c92\u6709\u627e\u5230\u8a72\u7269\u4ef6”)
\n“`<\/p>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 `frozenset` \u4f86\u78ba\u4fdd\u5b57\u5178\u7684\u53ef\u54c8\u5e0c\u6027\uff0c\u56e0\u70ba\u4e00\u822c\u7684\u5b57\u5178\u4e0d\u53ef\u54c8\u5e0c\u3002\u9019\u6a23\uff0c\u6211\u5011\u53ef\u4ee5\u5c07\u5b57\u5178\u7684\u54c8\u5e0c\u503c\u5b58\u5132\u4e26\u9032\u884c\u67e5\u8a62\u3002<\/p>\n
## \u932f\u8aa4\u6392\u9664<\/p>\n
\u5728\u4f7f\u7528 `hash()` \u51fd\u5f0f\u6642\uff0c\u8acb\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a
\n– **\u53ef\u54c8\u5e0c\u6027**\uff1a\u67d0\u4e9b\u7269\u4ef6\uff08\u5982\u5217\u8868\u548c\u5b57\u5178\uff09\u662f\u4e0d\u53ef\u54c8\u5e0c\u7684\u3002\u5982\u679c\u4f60\u5617\u8a66\u5c0d\u9019\u4e9b\u7269\u4ef6\u4f7f\u7528 `hash()`\uff0c\u5c07\u5f15\u767c `TypeError`\u3002
\n– **\u54c8\u5e0c\u885d\u7a81**\uff1a\u4e0d\u540c\u7684\u7269\u4ef6\u53ef\u80fd\u6703\u8fd4\u56de\u76f8\u540c\u7684\u54c8\u5e0c\u503c\uff0c\u9019\u7a2e\u73fe\u8c61\u7a31\u70ba\u54c8\u5e0c\u885d\u7a81\uff0c\u5c0d\u65bc\u5927\u898f\u6a21\u6578\u64da\u7d50\u69cb\u800c\u8a00\uff0c\u9019\u662f\u4e00\u500b\u503c\u5f97\u6ce8\u610f\u7684\u554f\u984c\u3002<\/p>\n
## \u5ef6\u4f38\u61c9\u7528<\/p>\n
`hash()` \u51fd\u5f0f\u5728\u8a31\u591a\u61c9\u7528\u4e2d\u90fd\u975e\u5e38\u6709\u7528\uff0c\u5305\u62ec\uff1a
\n– \u5feb\u901f\u67e5\u8a62\u8cc7\u6599\uff0c\u5982\u5728\u5927\u578b\u8cc7\u6599\u96c6\u4e2d\u7684\u8cc7\u6599\u6aa2\u7d22\u3002
\n– \u6578\u64da\u5b8c\u6574\u6027\u6aa2\u67e5\uff0c\u901a\u904e\u6bd4\u8f03\u54c8\u5e0c\u503c\u4f86\u78ba\u8a8d\u6578\u64da\u5728\u50b3\u8f38\u904e\u7a0b\u4e2d\u7684\u4e00\u81f4\u6027\u3002
\n– \u5728\u8cc7\u6599\u5eab\u8a2d\u8a08\u4e2d\u7528\u4f5c\u7d22\u5f15\u7684\u751f\u6210\u3002<\/p>\n
\u5982\u9700\u9032\u4e00\u6b65\u5b78\u7fd2 Python \u7684\u8cc7\u6599\u7d50\u69cb\u53ca\u6f14\u7b97\u6cd5\uff0c\u53ef\u4ee5\u53c3\u8003 [Miner.tw \u7684 Python \u8cc7\u6599\u7d50\u69cb\u6559\u5b78](https:\/\/miner.tw\/python-data-structures)\u3002<\/p>\n
## Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/p>\n
**Q1: hash() \u51fd\u5f0f\u7684\u8fd4\u56de\u503c\u662f\u4ec0\u9ebc\uff1f**
\nA1: `hash()` \u51fd\u5f0f\u8fd4\u56de\u4e00\u500b\u6574\u6578\uff0c\u9019\u500b\u6574\u6578\u662f\u7269\u4ef6\u5167\u5bb9\u7684\u552f\u4e00\u6a19\u8b58\u3002\u5982\u679c\u7269\u4ef6\u5167\u5bb9\u76f8\u540c\uff0c\u5247\u8fd4\u56de\u7684\u54c8\u5e0c\u503c\u4e5f\u6703\u76f8\u540c\u3002<\/p>\n
**Q2: \u70ba\u4ec0\u9ebc\u6709\u4e9b\u7269\u4ef6\u4e0d\u80fd\u7528 hash() \u51fd\u5f0f\uff1f**
\nA2: \u6709\u4e9b\u7269\u4ef6\uff0c\u5982\u5217\u8868\u6216\u5b57\u5178\uff0c\u56e0\u70ba\u5176\u5167\u5bb9\u53ef\u4ee5\u6539\u8b8a\uff0c\u6240\u4ee5\u662f\u4e0d\u53ef\u54c8\u5e0c\u7684\u3002\u9019\u662f\u70ba\u4e86\u78ba\u4fdd\u8cc7\u6599\u7684\u4e00\u81f4\u6027\u3002<\/p>\n
**Q3: \u54c8\u5e0c\u885d\u7a81\u662f\u4ec0\u9ebc\uff1f**
\nA3: \u54c8\u5e0c\u885d\u7a81\u662f\u6307\u4e0d\u540c\u7684\u7269\u4ef6\u8fd4\u56de\u76f8\u540c\u7684\u54c8\u5e0c\u503c\u3002\u9019\u5728\u8cc7\u6599\u7d50\u69cb\u4e2d\u53ef\u80fd\u5c0e\u81f4\u67e5\u8a62\u6027\u80fd\u4e0b\u964d\uff0c\u56e0\u6b64\u9700\u8981\u7528\u984d\u5916\u7684\u65b9\u5f0f\u4f86\u8655\u7406\u9019\u7a2e\u60c5\u6cc1\u3002<\/p>\n
—<\/p>\n
\u9019\u6a23\u7684\u512a\u5316\u4e0d\u50c5\u66f4\u65b0\u4e86\u5167\u5bb9\uff0c\u9084\u589e\u5f37\u4e86 SEO \u6548\u679c\uff0c\u4e26\u63d0\u4f9b\u4e86\u8b80\u8005\u66f4\u591a\u5be6\u7528\u7684\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2Python\u4e2d\u7684Hash\u51fd\u6578\uff0c\u4e86\u89e3\u5b83\u7684\u529f\u80fd\u548c\u7528\u6cd5\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u52a0\u5bc6\u548c\u89e3\u5bc6\u8cc7\u6599\u3002GoogleSEO\u539f\u5247\u53ef\u4ee5\u5e6b\u52a9\u60a8\u66f4\u6709\u6548\u5730\u641c\u7d22\u548c\u767c\u73fe\u60a8\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"author":1,"featured_media":2518,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[18],"tags":[15],"class_list":["post-3008","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python","tag-python"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/badgameshow.com\/steven\/wp-content\/uploads\/2022\/12\/DALL\u00b7E-2022-12-28-14.25.55-\u62f7\u8c9d2.png","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-Mw","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3008","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=3008"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3008\/revisions"}],"predecessor-version":[{"id":3009,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3008\/revisions\/3009"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/2518"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=3008"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3008"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}