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python strip()函数 介绍

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Release: 2016-06-06 11:27:47
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函数原型

声明:s为字符串,rm为要删除的字符序列

s.strip(rm)        删除s字符串中开头、结尾处,位于 rm删除序列的字符

s.lstrip(rm)       删除s字符串中开头处,位于 rm删除序列的字符

s.rstrip(rm)      删除s字符串中结尾处,位于 rm删除序列的字符

注意:

1. 当rm为空时,默认删除空白符(包括'\n', '\r',  '\t',  ' ')

例如:

代码如下:


>>> a = '     123'
>>> a.strip()
'123'
>>> a='\t\tabc'
'abc'
>>> a = 'sdff\r\n'
>>> a.strip()
'sdff'

2.这里的rm删除序列是只要边(开头或结尾)上的字符在删除序列内,就删除掉。

例如 :

代码如下:


>>> a = '123abc'
>>> a.strip('21')
'3abc'   结果是一样的
>>> a.strip('12')
'3abc'

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