parameters: (s, chars=None)
return_statement: return s.rstrip(chars)
docstring: rstrip(s [,chars]) -> string
  
      Return a copy of the string s with trailing whitespace removed.
      If chars is given and not None, remove characters in chars instead.
docstring_summary: rstrip(s [,chars]) -> string
docstring_tokens: rstrip ( s [ chars ] ) - > string
function: def rstrip(s, chars=None):
      """rstrip(s [,chars]) -> string
  
      Return a copy of the string s with trailing whitespace removed.
      If chars is given and not None, remove characters in chars instead.
  
      """
      return s.rstrip(chars)
function_tokens: def rstrip ( s , chars = None ) : return s . rstrip ( chars )