如何用python中的正则表达式替换一个空格？

Question

例如:

T h e   t e x t   i s   w h a t   I   w a n t   t o   r e p l a c e

我想要这样的结果:

The text is what I want to replace

我尝试用shell,sed,

 echo 'T h e   t e x t   i s   W h a t   I  w a n t   r e p l a c e'|sed -r "s/(([a-zA-Z])\s){1}/\2/g"|sed 's/\  / /g'

它成功了.但我不知道如何在python中替换它.有人能帮助我吗？

Answer 1

如果您只想转换每个字符之间有空格的字符串:

>>> import re
>>> re.sub(r'(.) ', r'\1', 'T h e   t e x t   i s   w h a t   I   w a n t   t o  r e p l a c e')
'The text is what I want to replace'

或者,如果要删除所有单个空格并将空格替换为仅一个空格:

>>> re.sub(r'( ?) +', r'\1', 'A B  C   D')
'AB C D'