(s, width)
return s + ' '*n
ljust(s, width) -> string

    Return a left-justified version of s, in a field of the
    specified width, padded with spaces as needed.  The string is
    never truncated.
ljust(s, width) -> string
ljust ( s width ) - > string
def ljust(s, width):
    """ljust(s, width) -> string

    Return a left-justified version of s, in a field of the
    specified width, padded with spaces as needed.  The string is
    never truncated.

    """
    n = width - len(s)
    if n <= 0: return s
    return s + ' '*n
def ljust ( s , width ) : n = width - len ( s ) if n <= 0 : return s return s + ' ' * n