keep only alphanumeric characters python code example

Example 1: python string strip non alphanumeric

Regular expressions to the rescue:

import re
stripped_string = re.sub(r'\W+', '', your_string)

Example 2: all alphanumeric characters for python python

alpha_numeric = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"