remove string of string in python code example

Example 1: remove substring python

>>> papa = 'papa is a good man'
>>> papa.replace('papa', '')
' is a good man'

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)