如何在Python中使用Re模塊提取所有標點符號？

Question

我想用re模塊從文本中提取所有標點符號。我怎樣才能做到這一點？

Answer 1

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

它會打印所有來自文本的標點字符。

! 
# 
$ 
% 
& 
(
) 
* 
@ 
^ 

OR

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

Answer 2

我不知道如何與re模塊做到這一點，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) 
#,,!