python re.split_python re模块re.split将字符串分割后返回列表

re.split

split方法按照能够匹配的子串将字符串分割后返回列表，它的使用形式如下：

re.split(pattern,string[,maxsplit=0,flags=0])

参数：

参数描述

pattern匹配的正则表达式

string要匹配的字符串。

maxsplit分隔次数，maxsplit=1分隔一次，默认为0，不限制次数。

flags标志位，用于控制正则表达式的匹配方式，如：是否区分大小写，多行匹配等等。

>>>importre

>>>re.split("W+","pythonf,pythonf,pythonf.")

["pythonf","pythonf","pythonf",""]

>>>re.split("(W+)","pythonf,pythonf,pythonf.")

["","","pythonf",",","pythonf",",","pythonf",".",""]

>>>re.split("W+","pythonf,pythonf,pythonf.",1)

["","pythonf,pythonf,pythonf."]

>>>re.split("a*","helloworld")#对于一个找不到匹配的字符串而言，split不会对其作出分割

["helloworld"]

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