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

    def cell_wrapper(self, *args, **kwargs):
        try:
            if len(args):
                int(args[0])
        except ValueError:
            if (':' in args[0]):
                (cell_1, cell_2) = args[0].split(':')
                (row_1, col_1) = xl_cell_to_rowcol(cell_1)
                (row_2, col_2) = xl_cell_to_rowcol(cell_2)
            else:
                (row_1, col_1) = xl_cell_to_rowcol(args[0])
                (row_2, col_2) = (row_1, col_1)
            new_args = [row_1, col_1, row_2, col_2]
            new_args.extend(args[1:])
            args = new_args
        return method(self, *args, **kwargs)
    return cell_wrapper

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

def convert_range_args(method):