如何在Python中使用Re模块提取所有标点符号？

Question

我想用re模块从文本中提取所有标点符号。我怎样才能做到这一点？

Answer 1

>>> text = "ABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*()" 
>>> from string import punctuation 
>>> for p in punctuation: 
...  if p in text: 
...    print p 
... 

它会打印所有来自文本的标点字符。

! 
# 
$ 
% 
& 
(
) 
* 
@ 
^ 

OR

>>> text = "ABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*()" 
>>> [char for char in punctuation if char in text] 
['!', '#', '$', '%', '&', '(', ')', '*', '@', '^'] 

Answer 2

我不知道如何与re模块做到这一点，但您可以使用列表理解：

from string import punctuation 
old_string = "This, by the way, has some punctuation!" 
new_string = "".join(char for char in old_string if char in punctuation) 
print(new_string) 
#,,!