{"id":564,"date":"2022-12-28T14:12:41","date_gmt":"2022-12-28T06:12:41","guid":{"rendered":"http:\/\/www.cyayaa.com\/?p=564"},"modified":"2022-12-28T14:12:41","modified_gmt":"2022-12-28T06:12:41","slug":"python%e4%b8%ad%e7%9a%84lambda%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"http:\/\/www.cyayaa.com\/index.php\/2022\/12\/28\/python%e4%b8%ad%e7%9a%84lambda%e5%87%bd%e6%95%b0\/","title":{"rendered":"python\u4e2d\u7684lambda\u51fd\u6570"},"content":{"rendered":"\n

\u6700\u8fd1\u78b0\u89c1\u592a\u591a\u6b21lambda\u51fd\u6570\u4e86\uff0c\u90a3\u5c31\u6765\u8be6\u7ec6\u89e3\u91ca\u4e00\u4e0b\u8be5\u51fd\u6570\u3002<\/p>\n\n\n\n

lambda\u51fd\u6570
\u6211\u4eec\u5148\u5bf9lambda\u51fd\u6570\u8fdb\u884c\u4e00\u4e2a\u7b80\u5355\u7684\u4ecb\u7ecd<\/p>\n\n\n\n

lambda\u51fd\u6570\u662f\u4e00\u79cd\u533f\u540d\u51fd\u6570\uff0c\u5373\u6ca1\u6709\u540d\u5b57\u7684\u51fd\u6570
\u4f7f\u7528lambda\u4fdd\u7559\u5b57\u5b9a\u4e49\uff0c\u51fd\u6570\u540d\u662f\u8fd4\u56de\u7ed3\u679c
lambda\u51fd\u6570\u7684\u51fd\u6570\u4f53\u53ea\u662f\u4e00\u4e2a\u8868\u8fbe\u5f0f
lambda\u51fd\u6570\u7528\u4e8e\u5b9a\u4e49\u7b80\u5355\u7684\u3001\u80fd\u591f\u5728\u4e00\u884c\u5185\u8868\u793a\u7684\u51fd\u6570
lambda\u8868\u8fbe\u5f0f\u201d : \u201c\u540e\u9762\uff0c\u53ea\u80fd\u6709\u4e00\u4e2a\u8868\u8fbe\u5f0f\uff0cdef\u5219\u53ef\u4ee5\u6709\u591a\u4e2a\u3002
lambda\u4e00\u822c\u7528\u6765\u5b9a\u4e49\u7b80\u5355\u7684\u51fd\u6570\uff0c\u800cdef\u53ef\u4ee5\u5b9a\u4e49\u590d\u6742\u7684\u51fd\u6570
\u5148\u6765\u770b\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n\n\n\n

g=lambda x:x+1
print(g(1))<\/p>\n\n\n\n

\u7ed3\u679c\u4e3a2<\/h1>\n\n\n\n


\u53ef\u4ee5\u8fd9\u6837\u8ba4\u4e3a\uff0clambda\u4f5c\u4e3a\u4e00\u4e2a\u8868\u8fbe\u5f0f\uff0c\u5b9a\u4e49\u4e86\u4e00\u4e2a\u533f\u540d\u51fd\u6570\u3002\u7b49\u4ef7\u4e8e\uff1a<\/p>\n\n\n\n

def g(x):
return x+1

\u975e\u5e38\u5bb9\u6613\u7406\u89e3\uff0c\u5728\u8fd9\u91cclambda\u7b80\u5316\u4e86\u51fd\u6570\u5b9a\u4e49\u7684\u4e66\u5199\u5f62\u5f0f\u3002\u662f\u4ee3\u7801\u66f4\u4e3a\u7b80\u6d01\uff0c\u4f46\u662f\u4f7f\u7528\u51fd\u6570\u7684\u5b9a\u4e49\u65b9\u5f0f\u66f4\u4e3a\u76f4\u89c2\uff0c\u6613\u7406\u89e3\u3002
\u3000<\/p>\n\n\n\n

\u53ef\u4f20\u5165\u591a\u4e2a\u53c2\u6570
g=lambda x,y,z:x+y+z*2
print(g(1,2,3))<\/p>\n\n\n\n

\u7ed3\u679c\u4e3a9<\/h1>\n\n\n\n

\u4e5f\u53ef\u76f4\u63a5\u4f20\u9012\u53c2\u6570<\/h1>\n\n\n\n

(lambda x:x**2)(3)<\/p>\n\n\n\n

\u7ed3\u679c\u4e3a9<\/h1>\n\n\n\n


lambda\u8868\u8fbe\u5f0f\u4f1a\u8fd4\u56de\u4e00\u4e2a\u51fd\u6570\u5bf9\u8c61\uff0c\u5982\u679c\u6ca1\u6709\u53d8\u91cf\u63a5\u53d7\u8fd9\u4e2a\u8fd4\u56de\u503c\u7684\u8bdd\uff0c\u5b83\u5f88\u5feb\u5c31\u4f1a\u88ab\u4e22\u5f03\u3002\u4e5f\u6b63\u662f\u7531\u4e8elambda\u53ea\u662f\u4e00\u4e2a\u8868\u8fbe\u5f0f\uff0c\u6240\u4ee5\u5b83\u53ef\u4ee5\u76f4\u63a5\u4f5c\u4e3alist\u548cdict\u7684\u6210\u5458
list_a = [lambda a: a3, lambda b: b<\/strong>3]
print(type(list_a[0]))

\u7ed3\u679c\u4e3a\uff1a<\/p>\n\n\n\n

\u4e0emap\u51fd\u6570\u8fdb\u884c\u4f7f\u7528
a = map(lambda x:x**2,range(5))
print(list(a))
1
2
\u7ed3\u679c\u4e3a\uff1a<\/p>\n\n\n\n

\u603b\u7ed3
lambda\u51fd\u6570\u4f7f\u4ee3\u7801\u7ed3\u6784\u66f4\u52a0\u7d27\u51d1\uff0c\u4f46\u5374\u4f7f\u4ee3\u7801\u770b\u8d77\u6765\u4e0d\u662f\u90a3\u4e48\u6e05\u6670\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6700\u8fd1\u78b0\u89c1\u592a\u591a\u6b21lambda\u51fd\u6570\u4e86\uff0c\u90a3\u5c31\u6765\u8be6\u7ec6\u89e3\u91ca\u4e00\u4e0b\u8be5\u51fd\u6570\u3002 lambda\u51fd\u6570\u6211\u4eec\u5148\u5bf9lambda\u51fd\u6570\u8fdb\u884c\u4e00\u4e2a …<\/p>\n

python\u4e2d\u7684lambda\u51fd\u6570<\/span> \u67e5\u770b\u5168\u6587 »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-564","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/www.cyayaa.com\/index.php\/wp-json\/wp\/v2\/posts\/564","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.cyayaa.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cyayaa.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cyayaa.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cyayaa.com\/index.php\/wp-json\/wp\/v2\/comments?post=564"}],"version-history":[{"count":1,"href":"http:\/\/www.cyayaa.com\/index.php\/wp-json\/wp\/v2\/posts\/564\/revisions"}],"predecessor-version":[{"id":565,"href":"http:\/\/www.cyayaa.com\/index.php\/wp-json\/wp\/v2\/posts\/564\/revisions\/565"}],"wp:attachment":[{"href":"http:\/\/www.cyayaa.com\/index.php\/wp-json\/wp\/v2\/media?parent=564"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cyayaa.com\/index.php\/wp-json\/wp\/v2\/categories?post=564"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cyayaa.com\/index.php\/wp-json\/wp\/v2\/tags?post=564"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}