(self)
return self.Split()[2]
File extension - text following the final period, includes that period.
File extension - text following the final period, includes that period.
File extension - text following the final period includes that period .
def Extension(self):
    """File extension - text following the final period, includes that period."""
    return self.Split()[2]
def Extension ( self ) : return self . Split ( ) [ 2 ]