how to remove characters from list in python code example

Example 1: how to remove all characters from a string in python

s = 'abc12321cba'

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

Example 2: remove n characters from string python

example_string = "Hello there"

def remove_chars(n, string):
    list_of_chars_in_string = [char for char in string] 
    
    for num in range(n):
        list_of_chars_in_string.pop() # Removes last n characters in string
    
    new_string = ''.join(list_of_chars_in_string)
    return new_string