Python strip lstrip rstrip使用方法(字符串处理空格)
lstrip, trim掉左边的空格
rstrip, trim掉右边的空格
strip ( | s [ , chars ] ) |
Return a copy of the string with leading and trailing characters removed. If chars is omitted or None
, whitespace characters are removed. If given and not None
, chars must be a string; the characters in the string will be stripped from the both ends of the string this method is called on.
strip lstrip rstrip使用方法
theString = 'saaaay yes no yaaaass'
print theString.strip('say')
theString依次被去除首尾在['s','a','y']数组内的字符,直到字符在不数组内。所以,输出的结果为:
yes no
比较简单吧,lstrip和rstrip原理是一样的。注意:当没有传入参数时,是默认去除首尾空格的。
theString = 'saaaay yes no yaaaass'
print theString.strip('say')
print theString.strip('say ') #say后面有空格
print theString.lstrip('say')
print theString.rstrip('say')
运行结果:
yes no
es no
yes no yaaaass
saaaay yes no
- x = ' hello python '
- print '|' , x.lstrip( ), '|' , x.rstrip( ), '|' , x.strip( ), '|'
| hello python | hello python | hello python |
>>> y = ''.join(x_list)
>>> print '|' ,y,'|'