There are several methods to do this I am discussing a few with you:
Use rstrip
>>> 'test string\n'.rstrip()'test string'
>>> 'test string\n'.rstrip()
'test string'
To use this for newlines:
>>> 'test string \n \r\n\n\r \n\n'.rstrip('\n')'test string \n \r\n\n\r '
>>> 'test string \n \r\n\n\r \n\n'.rstrip('\n')
'test string \n \r\n\n\r '
You can also use lstrip() and strip()
>>> s = " \n\r\n \n abc def \n\r\n \n "
>>> s.strip()'qwe rty'>>> s.lstrip()'qwe rty \n\r\n \n '>>> s.rstrip()' \n\r\n \n qwe rty'