how to remove space at the end of text in python code example

Example 1: python remove whitespace from start of string

'     hello world!    '.strip()
'hello world!'


'     hello world!    '.lstrip()
'hello world!    '

'     hello world!    '.rstrip()
'    hello world!'

Example 2: python trim whitespace from end of string

>>> "    xyz     ".rstrip()
'    xyz'