Python \u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u72ec\u7279\u7684\u6570\u636e\u5904\u7406\u65b9\u5f0f\uff0c\u53ef\u4ee5\u4ece\u4e00\u4e2a\u6570\u636e\u5e8f\u5217\u6784\u5efa\u53e6\u4e00\u4e2a\u65b0\u7684\u6570\u636e\u5e8f\u5217\u7684\u7ed3\u6784\u4f53\u3002<\/p>\n\n\n\n
Python \u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u5f3a\u5927\u4e14\u7b80\u6d01\u7684\u8bed\u6cd5\uff0c\u9002\u7528\u4e8e\u751f\u6210\u5217\u8868\u3001\u5b57\u5178\u3001\u96c6\u5408\u548c\u751f\u6210\u5668\u3002<\/p>\n\n\n\n
\u5728\u4f7f\u7528\u63a8\u5bfc\u5f0f\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u53ef\u8bfb\u6027\uff0c\u5c3d\u91cf\u4fdd\u6301\u8868\u8fbe\u5f0f\u7b80\u6d01\uff0c\u4ee5\u514d\u5f71\u54cd\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n\n\n\n
Python \u652f\u6301\u5404\u79cd\u6570\u636e\u7ed3\u6784\u7684\u63a8\u5bfc\u5f0f\uff1a<\/p>\n\n\n\n
\u5217\u8868\u63a8\u5bfc\u5f0f\u683c\u5f0f\u4e3a\uff1a<\/p>\n\n\n\n
[\u8868\u8fbe\u5f0f for \u53d8\u91cf in \u5217\u8868] \n[out_exp_res for out_exp in input_list]\n\n\u6216\u8005 \n\n[\u8868\u8fbe\u5f0f for \u53d8\u91cf in \u5217\u8868 if \u6761\u4ef6]\n[out_exp_res for out_exp in input_list if condition]<\/pre>\n\n\n\n
\u8fc7\u6ee4\u6389\u957f\u5ea6\u5c0f\u4e8e\u6216\u7b49\u4e8e3\u7684\u5b57\u7b26\u4e32\u5217\u8868\uff0c\u5e76\u5c06\u5269\u4e0b\u7684\u8f6c\u6362\u6210\u5927\u5199\u5b57\u6bcd\uff1a<\/p>\n\n\n\n
>>> names = [‘Bob’,’Tom’,’alice’,’Jerry’,’Wendy’,’Smith’] \u8ba1\u7b97 30 \u4ee5\u5185\u53ef\u4ee5\u88ab 3 \u6574\u9664\u7684\u6574\u6570\uff1a<\/p>\n\n\n\n >>> multiples = [i for<\/strong> i in<\/strong> range(30) if<\/strong> i % 3 == 0] \u5b57\u5178\u63a8\u5bfc\u57fa\u672c\u683c\u5f0f\uff1a<\/p>\n\n\n\n \u4f7f\u7528\u5b57\u7b26\u4e32\u53ca\u5176\u957f\u5ea6\u521b\u5efa\u5b57\u5178\uff1a<\/p>\n\n\n\n listdemo = [‘Google’,’Runoob’, ‘Taobao’] \u63d0\u4f9b\u4e09\u4e2a\u6570\u5b57\uff0c\u4ee5\u4e09\u4e2a\u6570\u5b57\u4e3a\u952e\uff0c\u4e09\u4e2a\u6570\u5b57\u7684\u5e73\u65b9\u4e3a\u503c\u6765\u521b\u5efa\u5b57\u5178\uff1a<\/p>\n\n\n\n >>> dic = {x: x**2 for<\/strong> x in<\/strong> (2, 4, 6)} \u96c6\u5408\u63a8\u5bfc\u5f0f\u57fa\u672c\u683c\u5f0f\uff1a<\/p>\n\n\n\n \u8ba1\u7b97\u6570\u5b57 1,2,3 \u7684\u5e73\u65b9\u6570\uff1a<\/p>\n\n\n\n >>> setnew = {i**2 for<\/strong> i in<\/strong> (1,2,3)} \u5224\u65ad\u4e0d\u662f abc \u7684\u5b57\u6bcd\u5e76\u8f93\u51fa\uff1a<\/p>\n\n\n\n >>> a = {x for<\/strong> x in<\/strong> ‘abracadabra’ if<\/strong> x not<\/strong> in<\/strong> ‘abc’} \u5143\u7ec4\u63a8\u5bfc\u5f0f\u53ef\u4ee5\u5229\u7528 range \u533a\u95f4\u3001\u5143\u7ec4\u3001\u5217\u8868\u3001\u5b57\u5178\u548c\u96c6\u5408\u7b49\u6570\u636e\u7c7b\u578b\uff0c\u5feb\u901f\u751f\u6210\u4e00\u4e2a\u6ee1\u8db3\u6307\u5b9a\u9700\u6c42\u7684\u5143\u7ec4\u3002<\/p>\n\n\n\n \u5143\u7ec4\u63a8\u5bfc\u5f0f\u57fa\u672c\u683c\u5f0f\uff1a<\/p>\n\n\n\n \u5143\u7ec4\u63a8\u5bfc\u5f0f\u548c\u5217\u8868\u63a8\u5bfc\u5f0f\u7684\u7528\u6cd5\u4e5f\u5b8c\u5168\u76f8\u540c\uff0c\u53ea\u662f\u5143\u7ec4\u63a8\u5bfc\u5f0f\u662f\u7528 ()<\/strong> \u5706\u62ec\u53f7\u5c06\u5404\u90e8\u5206\u62ec\u8d77\u6765\uff0c\u800c\u5217\u8868\u63a8\u5bfc\u5f0f\u7528\u7684\u662f\u4e2d\u62ec\u53f7 []<\/strong>\uff0c\u53e6\u5916\u5143\u7ec4\u63a8\u5bfc\u5f0f\u8fd4\u56de\u7684\u7ed3\u679c\u662f\u4e00\u4e2a\u751f\u6210\u5668\u5bf9\u8c61\u3002<\/p>\n\n\n\n \u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u4ee3\u7801\u751f\u6210\u4e00\u4e2a\u5305\u542b\u6570\u5b57 1~9 \u7684\u5143\u7ec4\uff1a<\/p>\n\n\n\n >>> a = (x for<\/strong> x in<\/strong> range(1,10)) >>> tuple(a) # \u4f7f\u7528 tuple() \u51fd\u6570\uff0c\u53ef\u4ee5\u76f4\u63a5\u5c06\u751f\u6210\u5668\u5bf9\u8c61\u8f6c\u6362\u6210\u5143\u7ec4 Python \u63a8\u5bfc\u5f0f\u662f\u4e00\u79cd\u72ec\u7279\u7684\u6570\u636e\u5904\u7406\u65b9\u5f0f\uff0c\u53ef\u4ee5\u4ece\u4e00\u4e2a\u6570\u636e\u5e8f\u5217\u6784\u5efa...<\/p>\n","protected":false},"author":1,"featured_media":487,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-570","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-1"],"views":596,"_links":{"self":[{"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/posts\/570","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/comments?post=570"}],"version-history":[{"count":1,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/posts\/570\/revisions"}],"predecessor-version":[{"id":571,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/posts\/570\/revisions\/571"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/media\/487"}],"wp:attachment":[{"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/media?parent=570"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/categories?post=570"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.pyteam.cn\/index.php\/wp-json\/wp\/v2\/tags?post=570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
>>> new_names = [name.upper()for<\/strong> name in<\/strong> names if<\/strong> len(name)>3]
>>> print<\/strong>(new_names)
[‘ALICE’, ‘JERRY’, ‘WENDY’, ‘SMITH’]<\/p>\n\n\n\n\u5b9e\u4f8b<\/h2>\n\n\n\n
>>> print<\/strong>(multiples)
[0, 3, 6, 9, 12, 15, 18, 21, 24, 27]<\/p>\n\n\n\n\u5b57\u5178\u63a8\u5bfc\u5f0f<\/h2>\n\n\n\n
{ key_expr: value_expr for value in collection }\n\n\u6216\n\n{ key_expr: value_expr for value in collection if condition }<\/pre>\n\n\n\n\u5b9e\u4f8b<\/h2>\n\n\n\n
# \u5c06\u5217\u8868\u4e2d\u5404\u5b57\u7b26\u4e32\u503c\u4e3a\u952e\uff0c\u5404\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u4e3a\u503c\uff0c\u7ec4\u6210\u952e\u503c\u5bf9
>>> newdict = {key:len(key) for<\/strong> key in<\/strong> listdemo}
>>> newdict
{‘Google’: 6, ‘Runoob’: 6, ‘Taobao’: 6}<\/p>\n\n\n\n\u5b9e\u4f8b<\/h2>\n\n\n\n
>>> dic
{2: 4, 4: 16, 6: 36}
>>> type(dic)
<class<\/strong> ‘dict’><\/p>\n\n\n\n\u96c6\u5408\u63a8\u5bfc\u5f0f<\/h2>\n\n\n\n
{ expression for item in Sequence }\n\u6216\n{ expression for item in Sequence if conditional }<\/pre>\n\n\n\n\u5b9e\u4f8b<\/h2>\n\n\n\n
>>> setnew
{1, 4, 9}<\/p>\n\n\n\n\u5b9e\u4f8b<\/h2>\n\n\n\n
>>> a
{‘d’, ‘r’}
>>> type(a)
<class<\/strong> ‘set’><\/p>\n\n\n\n\u5143\u7ec4\u63a8\u5bfc\u5f0f\uff08\u751f\u6210\u5668\u8868\u8fbe\u5f0f\uff09<\/h2>\n\n\n\n
(expression for item in Sequence )\n\u6216\n(expression for item in Sequence if conditional )<\/pre>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
>>> a
<generator object <genexpr> at 0x7faf6ee20a50> # \u8fd4\u56de\u7684\u662f\u751f\u6210\u5668\u5bf9\u8c61<\/p>\n\n\n\n
(1, 2, 3, 4, 5, 6, 7, 8, 9)<\/p>\n","protected":false},"excerpt":{"rendered":"