def orderBy(self, *cols, **kwargs):
    ascending = kwargs.pop('ascending', None)
    return DataFrame(self.sql_ctx, self.schema, _OrderBy(self, cols, ascending))
def orderBy(self, *cols, **kwargs):
    ascending = kwargs.pop('ascending', None)
    return DataFrame(self.sql_ctx, self.schema, _OrderBy(self, cols, ascending))