获取某个月每一天是星期几

def get_month_days(year, month):
    which_day, day_num = calendar.monthrange(year, month)
    day_list = []
    diff = which_day - 1  # 1%7
    for i in range(1, day_num + 1):
        week_day = (i % 7 + diff) % 7
        day_list.append((i, week_day))
    return day_list