Python remove anything that is not a letter or number

Question

I\'m having a little trouble with Python regular expressions.

What is a good way to remove all characters in a string that are not letters or numbers?

Thanks

Answer 1

you can use predefined regex in python : \W corresponds to the set [^a-zA-Z0-9_]. Then,

import re
s = 'Hello dutrow 123'
re.sub('\W', '', s)
--> 'Hellodutrow123'