为什么相同的代码返回列表和元组 pandas？

Question

if calculation_type == 'week':
    df = df.groupby([pd.Grouper(key=order_date_field, freq='W-SUN')])[
        display_fields].sum().reset_index().sort_values(order_date_field)
    df[order_date_field] = df[order_date_field].apply(lambda x: x.date().isoformat())
else:
    df = df.groupby([pd.Grouper(key=order_date_field, freq='M')])[
        display_fields].sum().reset_index().sort_values(order_date_field)
    df[order_date_field] = df[order_date_field].apply(lambda x: calendar.month_name[x.date().month])
return df.to_dict('records')

Question is next why if == week, return list and else return tuple?

df where 4 elems = list df where 2 elems = tutple

Answer 1

It was mine fault when i call the function i put accidentally coma after the function for ei year = get_calculation(args), and weeks week = get_calculation(args)