<\/p>\n
Python \u4e2d\u7684 Lambda \u51fd\u5f0f\u662f\u4e00\u7a2e\u7c21\u6f54\u7684\u51fd\u5f0f\u5b9a\u7fa9\u65b9\u5f0f\uff0c\u5b83\u5141\u8a31\u958b\u767c\u8005\u5728\u4e0d\u9700\u8981\u5b9a\u7fa9\u5b8c\u6574\u51fd\u5f0f\u7684\u60c5\u6cc1\u4e0b\uff0c\u5c07\u7a0b\u5f0f\u78bc\u7c21\u5316\u70ba\u4e00\u884c\u3002Lambda \u51fd\u5f0f\u7279\u5225\u9069\u5408\u7528\u65bc\u5167\u5efa\u51fd\u5f0f\uff0c\u5982 `map()`\u3001`filter()` \u548c `reduce()`\uff0c\u4f7f\u5f97\u4ee3\u78bc\u66f4\u52a0\u7c21\u6f54\u6613\u8b80\u3002<\/p>\n
## Lambda \u51fd\u5f0f\u7684\u57fa\u672c\u8a9e\u6cd5<\/p>\n
Lambda \u51fd\u5f0f\u7684\u8a9e\u6cd5\u975e\u5e38\u7c21\u55ae\uff0c\u50c5\u7531\u4e00\u884c\u7d44\u6210\uff0c\u4e26\u4e14\u53ea\u80fd\u5305\u542b\u4e00\u500b\u8868\u9054\u5f0f\u3002\u5176\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n
“`python
\nlambda arguments: expression
\n“`<\/p>\n
\u5176\u4e2d\uff0c`arguments` \u53ef\u4ee5\u662f\u55ae\u500b\u6216\u591a\u500b\u53c3\u6578\uff0c\u800c `expression` \u662f\u4efb\u4f55\u6709\u6548\u7684 Python \u8868\u9054\u5f0f\uff0c\u6703\u5728\u51fd\u5f0f\u57f7\u884c\u6642\u88ab\u8a08\u7b97\u3002<\/p>\n
## \u5be6\u4f5c\u7bc4\u4f8b\uff1a\u7c21\u55ae\u7684\u52a0\u6cd5\u51fd\u5f0f<\/p>\n
\u5047\u8a2d\u6211\u5011\u60f3\u8981\u5b9a\u7fa9\u4e00\u500b\u51fd\u5f0f\uff0c\u5c07\u5169\u500b\u6578\u5b57\u76f8\u52a0\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b Lambda \u51fd\u5f0f\u4f86\u5be6\u73fe\uff1a<\/p>\n
“`python
\nadd = lambda x, y: x + y
\n“`<\/p>\n
\u73fe\u5728\uff0c\u53ef\u4ee5\u4f7f\u7528\u9019\u500b\u51fd\u5f0f\u4f86\u5c07\u5169\u500b\u6578\u5b57\u76f8\u52a0\uff1a<\/p>\n
“`python
\nresult = add(5, 3)
\nprint(result)
\n“`<\/p>\n
### \u8f38\u51fa\u7d50\u679c<\/p>\n
“`
\n8
\n“`<\/p>\n
## Lambda \u51fd\u5f0f\u7684\u61c9\u7528\uff1a\u4f7f\u7528 map() \u9032\u884c\u6279\u91cf\u64cd\u4f5c<\/p>\n
Lambda \u51fd\u5f0f\u975e\u5e38\u9069\u5408\u7528\u65bc\u5167\u5efa\u51fd\u5f0f\uff0c\u5982 `map()`\u3002\u8209\u500b\u4f8b\u5b50\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u5217\u8868\uff0c\u60f3\u8981\u5c07\u6bcf\u500b\u5143\u7d20\u90fd\u52a0\u4e0a 10\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u4f86\u5be6\u73fe\uff1a<\/p>\n
“`python
\nnums = [1, 2, 3, 4, 5]\nresult = list(map(lambda x: x + 10, nums))
\nprint(result)
\n“`<\/p>\n
### \u8f38\u51fa\u7d50\u679c<\/p>\n
“`
\n[11, 12, 13, 14, 15]\n“`<\/p>\n
## \u4f7f\u7528 filter() \u904e\u6ffe\u8cc7\u6599<\/p>\n
\u53e6\u4e00\u500b\u61c9\u7528\u7bc4\u4f8b\u662f\u4f7f\u7528 `filter()` \u51fd\u5f0f\u4f86\u7be9\u9078\u51fa\u6240\u6709\u5076\u6578\u3002\u4ee5\u4e0b\u662f\u5be6\u4f5c\u7bc4\u4f8b\uff1a<\/p>\n
“`python
\nnums = [1, 2, 3, 4, 5]\nresult = list(filter(lambda x: x % 2 == 0, nums))
\nprint(result)
\n“`<\/p>\n
### \u8f38\u51fa\u7d50\u679c<\/p>\n
“`
\n[2, 4]\n“`<\/p>\n
## \u932f\u8aa4\u6392\u9664<\/p>\n
\u5728\u4f7f\u7528 Lambda \u51fd\u5f0f\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u5e7e\u7a2e\u5e38\u898b\u7684\u932f\u8aa4\uff1a<\/p>\n
1. **\u8a9e\u6cd5\u932f\u8aa4**\uff1a\u78ba\u4fdd Lambda \u51fd\u5f0f\u7684\u8a9e\u6cd5\u6b63\u78ba\uff0c\u4e0d\u8981\u5728\u8868\u9054\u5f0f\u4e2d\u4f7f\u7528\u591a\u500b\u8a9e\u53e5\u3002
\n2. **\u985e\u578b\u932f\u8aa4**\uff1a\u78ba\u4fdd\u50b3\u905e\u7d66 Lambda \u51fd\u5f0f\u7684\u53c3\u6578\u985e\u578b\u6b63\u78ba\uff0c\u907f\u514d\u904b\u7b97\u932f\u8aa4\u3002<\/p>\n
## \u5ef6\u4f38\u61c9\u7528<\/p>\n
\u60a8\u53ef\u4ee5\u5c07 Lambda \u51fd\u5f0f\u8207\u5176\u4ed6 Python \u51fd\u5f0f\u7d50\u5408\u4f7f\u7528\uff0c\u4ee5\u9054\u5230\u66f4\u9748\u6d3b\u7684\u529f\u80fd\u3002\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 `sorted()` \u51fd\u5f0f\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u5c0d\u8cc7\u6599\u9032\u884c\u6392\u5e8f\uff1a<\/p>\n
“`python
\ndata = [(1, ‘apple’), (3, ‘banana’), (2, ‘cherry’)]\nsorted_data = sorted(data, key=lambda x: x[1])
\nprint(sorted_data)
\n“`<\/p>\n
### \u8f38\u51fa\u7d50\u679c<\/p>\n
“`
\n[(1, ‘apple’), (3, ‘banana’), (2, ‘cherry’)]\n“`<\/p>\n
\u7e3d\u7d50\u4f86\u8aaa\uff0cPython \u4e2d\u7684 Lambda \u51fd\u5f0f\u63d0\u4f9b\u4e86\u4e00\u7a2e\u9ad8\u6548\u4e14\u7c21\u6f54\u7684\u65b9\u5f0f\u4f86\u5b9a\u7fa9\u5340\u57df\u6027\u51fd\u5f0f\uff0c\u4f7f\u5f97\u4ee3\u78bc\u66f4\u52a0\u9748\u6d3b\u8207\u53ef\u8b80\u3002\u60f3\u4e86\u89e3\u66f4\u591a Python \u7a0b\u5f0f\u8a2d\u8a08\u7684\u6280\u5de7\u55ce\uff1f\u8acb\u67e5\u770b\u6211\u5728 [vocus.cc](https:\/\/vocus.cc) \u7684\u5176\u4ed6\u6559\u5b78\u6587\u7ae0\uff01<\/p>\n
## Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/p>\n
**Q1: Lambda \u51fd\u5f0f\u53ef\u4ee5\u7528\u4f86\u505a\u4ec0\u9ebc\uff1f**
\nA1: Lambda \u51fd\u5f0f\u4e3b\u8981\u7528\u65bc\u7c21\u5316\u7a0b\u5f0f\u78bc\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u77ed\u5c0f\u51fd\u5f0f\u7684\u5834\u5408\uff0c\u5982 `map()`\u3001`filter()` \u548c `sorted()` \u7b49\u5167\u5efa\u51fd\u5f0f\u4e2d\u3002<\/p>\n
**Q2: Lambda \u51fd\u5f0f\u548c\u666e\u901a\u51fd\u5f0f\u6709\u4ec0\u9ebc\u5340\u5225\uff1f**
\nA2: Lambda \u51fd\u5f0f\u662f\u4e00\u7a2e\u533f\u540d\u51fd\u5f0f\uff0c\u53ea\u80fd\u5305\u542b\u4e00\u500b\u8868\u9054\u5f0f\uff0c\u800c\u666e\u901a\u51fd\u5f0f\u5247\u53ef\u4ee5\u5305\u542b\u591a\u884c\u4ee3\u78bc\u548c\u591a\u500b\u8a9e\u53e5\u3002<\/p>\n
**Q3: \u4f7f\u7528 Lambda \u51fd\u5f0f\u6642\u6709\u4ec0\u9ebc\u6ce8\u610f\u4e8b\u9805\uff1f**
\nA3: \u4f7f\u7528 Lambda \u51fd\u5f0f\u6642\uff0c\u61c9\u6ce8\u610f\u5176\u8a9e\u6cd5\u898f\u7bc4\uff0c\u907f\u514d\u5728\u8868\u9054\u5f0f\u4e2d\u4f7f\u7528\u591a\u500b\u8a9e\u53e5\u6216\u8a9e\u6cd5\u932f\u8aa4\uff0c\u4ee5\u514d\u9020\u6210\u904b\u884c\u6642\u932f\u8aa4\u3002
\n—<\/p>\n","protected":false},"excerpt":{"rendered":"
Lambda\u51fd\u6578\u662fPython\u4e2d\u7684\u4e00\u7a2e\u7c21\u55ae\u7684\u51fd\u6578\uff0c\u53ef\u4ee5\u5728\u4e0d\u5b9a\u7fa9\u51fd\u6578\u7684\u60c5\u6cc1\u4e0b\u5c07\u529f\u80fd\u5beb\u5728\u4e00\u884c\u4e2d\uff0c\u53ef\u4ee5\u6e1b\u5c11\u7a0b\u5f0f\u78bc\u7684\u884c\u6578\uff0c\u63d0\u9ad8\u7a0b\u5f0f\u7684\u53ef\u8b80\u6027\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-3476","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-U4","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3476","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=3476"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3476\/revisions"}],"predecessor-version":[{"id":3477,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3476\/revisions\/3477"}],"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=3476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}