how to delete a string letter in python code example

Example 1: remove from string python

"Str*ing With Chars I! don't want".replace('!','').replace('*','')

Example 2: python remove letters from string

string = "abc123"
# Method 1
''.join(char for char in string if char.isdigit())

#Method 2
import re
re.sub("[^0-9]", "", string)