1s1 ='aBcDeFg'2print(s1.upper())#切换大写。3print(s1.lower())#切换小写。4print(s1.swapcase())#大小写相互切换。5print('aB1'.isalnum())#判断是否为字母数字,返回True或False。6print(s1.isalpha())#判断是否为字母,返回True或False。7print('123'.isdecimal())#判断是否为十进制,返回True或Fal...
sys.argv: 参数字符串列表(动态对象),第一个参数为当前程序主文件的绝对路径或空字符串,如果在命令提示符界面给``Python``文件传了参数(不同的参数以空格分隔,无论传入的时候写的是什么类型,最终都会转成字符串),可以在这里面获取(从第二个位置开始),比如命令提示符中运行``“``python main.py 111 aaa``”...
Uses uppercase exponential format if exponent is less than -4 or not less than precision, decimal format otherwise. (4) 'c' Single character (accepts integer or single character string). 只接受 单个字符或数字 'r' String (converts any Python object using repr()). (5) 's' String (conver...
In the final example, you use the tabsize argument, which is an optional argument that specifies an alternate tab size..ljust(width[, fill])The .ljust(width) call returns a string consisting of the target string left-justified in a field of width characters. By default, the padding ...
def token_features(token, part_of_speech):if token.isdigit():yield "numeric"else:yield "token={}".format(token.lower())yield "token,pos={},{}".format(token, part_of_speech)if token[0].isupper():yield "uppercase_initial"if token.isupper():yield "all_uppercase"yield "pos={}".form...
Alternate 迪杰斯特拉替代 Dinic 迪尼克 Directed And Undirected (Weighted) Graph 有向和无向(加权)图 Edmonds Karp Multiple Source And Sink Edmonds Karp 多源汇 Eulerian Path And Circuit For Undirected Graph 无向图的欧拉路径和电路 Even Tree 偶数树 Finding Bridges 寻找桥梁 Frequent Pattern Graph Miner ...
Previously some builtin hashes had uppercase names, but now that it is a formal public interface the naming has been made consistent (bpo-18532). Because unittest.TestSuite now drops references to tests after they are run, test harnesses that re-use a TestSuite to re-run a set of tests...
Alternate 迪杰斯特拉替代 Dinic 迪尼克 Directed And Undirected (Weighted) Graph 有向和无向(加权)图 Edmonds Karp Multiple Source And Sink Edmonds Karp 多源汇 Eulerian Path And Circuit For Undirected Graph 无向图的欧拉路径和电路 Even Tree 偶数树 Finding Bridges 寻找桥梁 Frequent Pattern Graph Miner ...
--- 1. accepts a function as an argument --- def loud(text): return text.upper() def quiet(text): return text.lower() def hello(func): print(func("Hello")) hello(quiet) # accepts quite/lout function as an argument 赞 回复 蝎子离群索居 (狭路相逢稳者胜) 组长 楼主 2...
Remember that Python is case sensitive, so the uppercase version of 'true' and 'false' can be assigned to 2. Python常用的关键字 and, del, from, not, while, as, elif, global, or, with, assert, else, if, pass, yield, break, except, import, print, class, exec, in, raise, ...