human
Here's a good function header given the following:
I wrote the below code

    def column_wrapper(self, *args, **kwargs):
        try:
            if len(args):
                int(args[0])
        except ValueError:
            (cell_1, cell_2) = [(col + '1') for col in args[0].split(':')]
            (_, col_1) = xl_cell_to_rowcol(cell_1)
            (_, col_2) = xl_cell_to_rowcol(cell_2)
            new_args = [col_1, col_2]
            new_args.extend(args[1:])
            args = new_args
        return method(self, *args, **kwargs)
    return column_wrapper

What's a good function header?
assistant
#Here's a good function header.

def convert_column_args(method):