pythonchallenge 解谜 Level 2

#-*- coding:utf-8 -*-
#代码版本均为python 3.5.1
#Level 2

import re
file = open("Level 2.txt","r")
for line in file.readlines():
chars = ' '.join(re.findall(r'[a-z]|[A-Z]|[0-9]',line))
print (chars,end="")

http://www.pythonchallenge.com/pc/def/equality.html