how to remove all characters from a string in python code example

Example 1: delete certain characters from a string python

for char in line:
    if char in " ?.!/;:":
        line.replace(char,'')

Example 2: drop all characters after a character in python

sep = '...'
stripped = text.split(sep, 1)[0]

Example 3: how to remove all characters from a string in python

s = 'abc12321cba'

print(s.replace('a', ''))