Definition: re.split(pattern, string, maxsplit=0, flags=0)
如下将字符串按空格分开,maxsplit是分离的次数,maxsplit=1分离一次,默认为0,不限制次数
In [67]: text
Out[67]: 'HTTP/1.1 301 Moved Permanently'
In [68]: re.split(r"\s+",text)
Out[68]: ['HTTP/1.1', '301', 'Moved', 'Permanently']
In [69]: re.split(r"\s+",text,0)
Out[69]: ['HTTP/1.1', '301', 'Moved', 'Permanently']
In [70]: re.split(r"\s+",text,1)
Out[70]: ['HTTP/1.1', '301 Moved Permanently']
In [71]: re.split(......
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