python获取前一天，前两天，前几天的时间

import datetime

def getdatestr():
    # 获取前一天和前两天的时间戳
    checkinDate = datetime.datetime.today().date() - datetime.timedelta(days=2)
    checkoutDate = datetime.datetime.today().date() - datetime.timedelta(days=1)
    print(checkinDate, "=====", checkoutDate)


if __name__ == '__main__':
   getdatestr()