python之如何去除单词或数字中间的标点符号

例如，如果我有一串数字和一个单词列表:

My_number = ("5,6!7,8") 
My_word =["hel?llo","intro"] 

请您参考如下方法:

使用str.translate:

>>> from string import punctuation 
>>> lis = ["hel?llo","intro"] 
>>> [ x.translate(None, punctuation) for x in lis] 
['helllo', 'intro'] 
>>> strs = "5,6!7,8" 
>>> strs.translate(None, punctuation) 
'5678' 

使用正则表达式:

>>> import re 
>>> [ re.sub(r'[{}]+'.format(punctuation),'',x ) for x in lis] 
['helllo', 'intro'] 
>>> re.sub(r'[{}]+'.format(punctuation),'', strs) 
'5678' 

使用列表理解和str.join:

>>> ["".join([c for c in x if c not in punctuation])  for x in lis] 
['helllo', 'intro'] 
>>> "".join([c for c in strs if c not in punctuation]) 
'5678' 

功能:

>>> from collections import Iterable 
def my_strip(args): 
    if isinstance(args, Iterable) and not isinstance(args, basestring): 
        return [ x.translate(None, punctuation) for x in args] 
    else: 
        return args.translate(None, punctuation) 
...      
>>> my_strip("5,6!7,8") 
'5678' 
>>> my_strip(["hel?llo","intro"]) 
['helllo', 'intro']