python 去除字符串里所有标点符号

import re
text = " Hello,. [world]!  ()!"
#r='[’!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~]+'
r='[’!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~\n。！，]+'
line=re.sub(r,'',text)

print(line)

 Hello world