import datetime
def get_week_day(date):
    week_day = {
        0: '星期一',
        1: '星期二',
        2: '星期三',
        3: '星期四',
        4: '星期五',
        5: '星期六',
        6: '星期日',
    }
    day = date.weekday() #weekday()可以获得是星期几
 return week_day[day]
print(datetime.datetime.now())
print(get_week_day(datetime.datetime.now()))