<\/p>\n
Python \u4e2d\u7684 `map()` \u51fd\u6578\u662f\u4e00\u500b\u975e\u5e38\u5f37\u5927\u7684\u5de5\u5177\uff0c\u5b83\u80fd\u5920\u5c0d\u4e00\u500b\u53ef\u8fed\u4ee3\u7684\u7269\u4ef6\uff08\u5982\u5217\u8868\u3001\u5b57\u5178\u3001\u5143\u7d44\u7b49\uff09\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u61c9\u7528\u6307\u5b9a\u7684\u51fd\u6578\uff0c\u4e26\u5c07\u7d50\u679c\u96c6\u6210\u5728\u4e00\u8d77\u3002\u9019\u7a2e\u529f\u80fd\u4e0d\u50c5\u63d0\u9ad8\u4e86\u7a0b\u5f0f\u7684\u53ef\u8b80\u6027\uff0c\u9084\u80fd\u4f7f\u6211\u5011\u7684\u4ee3\u78bc\u66f4\u52a0\u7c21\u6f54\u3002<\/p>\n
## map() \u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5<\/p>\n
`map()` \u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n
“`python
\nmap(function, iterable, …)
\n“`<\/p>\n
– `function`\uff1a\u9700\u8981\u57f7\u884c\u7684\u51fd\u6578\u3002
\n– `iterable`\uff1a\u8981\u88ab\u8655\u7406\u7684\u53ef\u8fed\u4ee3\u7269\u4ef6\uff0c\u53ef\u4ee5\u662f\u4e00\u500b\u6216\u591a\u500b\u3002<\/p>\n
## \u4f7f\u7528\u7bc4\u4f8b<\/p>\n
\u8209\u500b\u4f8b\u5b50\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u6578\u5b57\u5217\u8868\uff1a<\/p>\n
“`python
\nnumbers = [1, 2, 3, 4, 5]\n“`<\/p>\n
\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 `map()` \u51fd\u6578\u5c0d\u6bcf\u500b\u5143\u7d20\u57f7\u884c\u4e00\u500b\u51fd\u6578\uff0c\u4f8b\u5982\u5c07\u6bcf\u500b\u5143\u7d20\u52a0\u4e0a 10\uff1a<\/p>\n
“`python
\ndef add_10(x):
\n return x + 10<\/p>\n
result = map(add_10, numbers)
\n“`<\/p>\n
\u57f7\u884c\u5f8c\uff0c`result` \u5c07\u662f\u4e00\u500b\u53ef\u8fed\u4ee3\u7684\u7269\u4ef6\uff0c\u5305\u542b\u5c0d `numbers` \u4e2d\u6bcf\u500b\u5143\u7d20\u57f7\u884c `add_10` \u51fd\u6578\u5f8c\u7684\u7d50\u679c\uff1a<\/p>\n
“`python
\nprint(list(result)) # \u8f38\u51fa: [11, 12, 13, 14, 15]\n“`<\/p>\n
## \u591a\u500b\u53ef\u8fed\u4ee3\u7269\u4ef6\u7684\u4f7f\u7528<\/p>\n
`map()` \u51fd\u6578\u4e5f\u53ef\u4ee5\u63a5\u53d7\u591a\u500b\u53ef\u8fed\u4ee3\u7269\u4ef6\uff0c\u9019\u662f\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684\u7279\u6027\u3002\u4f8b\u5982\uff1a<\/p>\n
“`python
\nnumbers1 = [1, 2, 3, 4, 5]\nnumbers2 = [6, 7, 8, 9, 10]\n
def add(x, y):
\n return x + y<\/p>\n
result = map(add, numbers1, numbers2)
\n“`<\/p>\n
\u9019\u88e1\uff0c`result` \u6703\u5305\u542b\u5c0d `numbers1` \u548c `numbers2` \u4e2d\u6bcf\u5c0d\u5143\u7d20\u57f7\u884c `add` \u51fd\u6578\u5f8c\u7684\u7d50\u679c\uff1a<\/p>\n
“`python
\nprint(list(result)) # \u8f38\u51fa: [7, 9, 11, 13, 15]\n“`<\/p>\n
## \u932f\u8aa4\u6392\u9664<\/p>\n
\u7576\u4f7f\u7528 `map()` \u51fd\u6578\u6642\uff0c\u5e38\u898b\u7684\u932f\u8aa4\u5305\u62ec\uff1a
\n1. **\u51fd\u6578\u932f\u8aa4**\uff1a\u78ba\u4fdd\u50b3\u5165\u7684\u51fd\u6578\u80fd\u5920\u8655\u7406\u6240\u6709\u53ef\u8fed\u4ee3\u7269\u4ef6\u4e2d\u7684\u5143\u7d20\u3002
\n2. **\u53ef\u8fed\u4ee3\u7269\u4ef6\u9577\u5ea6\u4e0d\u4e00\u81f4**\uff1a\u5982\u679c\u63d0\u4f9b\u591a\u500b\u53ef\u8fed\u4ee3\u7269\u4ef6\uff0c`map()` \u53ea\u6703\u8655\u7406\u5230\u6700\u77ed\u7684\u53ef\u8fed\u4ee3\u7269\u4ef6\u9577\u5ea6\u3002<\/p>\n
## \u5ef6\u4f38\u61c9\u7528<\/p>\n
`map()` \u51fd\u6578\u5e38\u898b\u65bc\u6578\u64da\u8655\u7406\u548c\u8f49\u63db\uff0c\u4f8b\u5982\u5728\u6578\u64da\u6e05\u7406\u3001\u6578\u64da\u5206\u6790\u7b49\u5834\u666f\u4e2d\u3002\u4f60\u53ef\u4ee5\u7d50\u5408 `filter()` \u548c `reduce()` \u51fd\u6578\u4f86\u9032\u884c\u66f4\u8907\u96dc\u7684\u6578\u64da\u8655\u7406\u3002<\/p>\n
## \u7d50\u8a9e<\/p>\n
`map()` \u51fd\u6578\u4e0d\u50c5\u80fd\u63d0\u9ad8\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\uff0c\u9084\u80fd\u8b93\u6211\u5011\u5c0d\u6578\u64da\u9032\u884c\u9ad8\u6548\u8655\u7406\u3002\u96a8\u8457 Python \u7684\u4e0d\u65b7\u66f4\u65b0\uff0c\u638c\u63e1\u9019\u4e9b\u5167\u5efa\u51fd\u6578\u5c07\u4f7f\u4f60\u7684\u7de8\u7a0b\u6280\u80fd\u66f4\u4e0a\u4e00\u5c64\u6a13\u3002<\/p>\n
\u5982\u679c\u4f60\u5c0d Python \u6709\u8208\u8da3\uff0c\u9084\u53ef\u4ee5\u53c3\u8003 [\u9019\u88e1\u7684\u6559\u5b78\u6587\u7ae0](https:\/\/vocus.cc) \u4e86\u89e3\u66f4\u591a\u9032\u968e\u6280\u5de7\u3002<\/p>\n
## \u5e38\u898b\u554f\u984c\u89e3\u7b54\uff08Q&A\uff09<\/p>\n
### Q1: map() \u51fd\u6578\u6703\u8fd4\u56de\u4ec0\u9ebc\u985e\u578b\u7684\u7d50\u679c\uff1f
\nA1: `map()` \u51fd\u6578\u8fd4\u56de\u4e00\u500b\u53ef\u8fed\u4ee3\u7684\u7269\u4ef6\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 `list()` \u5c07\u5176\u8f49\u63db\u70ba\u5217\u8868\u3002<\/p>\n
### Q2: \u5982\u4f55\u8655\u7406 `map()` \u4e2d\u7684 None \u503c\uff1f
\nA2: \u78ba\u4fdd\u50b3\u5165\u7684\u51fd\u6578\u80fd\u5920\u8655\u7406 None \u503c\uff0c\u6216\u5728\u51fd\u6578\u4e2d\u52a0\u5165\u5224\u65b7\u689d\u4ef6\u4f86\u904e\u6ffe\u6389 None \u503c\u3002<\/p>\n
### Q3: map() \u548c\u5217\u8868\u63a8\u5c0e\u5f0f\u6709\u4f55\u4e0d\u540c\uff1f
\nA3: `map()` \u51fd\u6578\u662f\u51fd\u6578\u5f0f\u7de8\u7a0b\u7684\u65b9\u5f0f\uff0c\u800c\u5217\u8868\u63a8\u5c0e\u5f0f\u63d0\u4f9b\u4e86\u4e00\u7a2e\u66f4 Pythonic \u7684\u65b9\u5f0f\u4f86\u5275\u5efa\u5217\u8868\uff0c\u5169\u8005\u5404\u6709\u512a\u7f3a\u9ede\uff0c\u6839\u64da\u9700\u6c42\u9078\u64c7\u4f7f\u7528\u3002<\/p>\n
—<\/p>\n","protected":false},"excerpt":{"rendered":"
map()\u51fd\u6578\u662fPython\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u51fd\u6578\uff0c\u5b83\u53ef\u4ee5\u5c07\u4e00\u500b\u51fd\u6578\u7684\u7d50\u679c\u6620\u5c04\u5230\u53e6\u4e00\u500b\u5e8f\u5217\u4e0a\uff0c\u63d0\u4f9b\u4e86\u4e00\u7a2e\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u6cd5\u4f86\u8655\u7406\u5e8f\u5217\u4e2d\u7684\u5143\u7d20\u3002\u672c\u6587\u5c07\u4ecb\u7d39map()\u51fd\u6578\u7684\u529f\u80fd\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u8655\u7406\u5e8f\u5217\u4e2d\u7684\u5143\u7d20\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-3486","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-Ue","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3486","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=3486"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3486\/revisions"}],"predecessor-version":[{"id":3487,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3486\/revisions\/3487"}],"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=3486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3486"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}