python 获取指定日期的前一个礼拜具体日期

`
import datetime
def get_week_list(now):
last_week7 = (now -datetime.timedelta(days=now.isoweekday() + 7)).strftime("%Y-%m-%d")
last_week6 = (now -datetime.timedelta(days=now.isoweekday() + 6)).strftime("%Y-%m-%d")
last_week5 = (now -datetime.timedelta(days=now.isoweekday() + 5)).strftime("%Y-%m-%d")
last_week4 = (now -datetime.timedelta(days=now.isoweekday() + 4)).strftime("%Y-%m-%d")
last_week3 = (now -datetime.timedelta(days=now.isoweekday() + 3)).strftime("%Y-%m-%d")
last_week2 = (now -datetime.timedelta(days=now.isoweekday() + 2)).strftime("%Y-%m-%d")
last_week1 = (now -datetime.timedelta(days=now.isoweekday() + 1)).strftime("%Y-%m-%d")
last_week = [last_week7, last_week6, last_week5, last_week4, last_week3,last_week2,last_week1]
return last_week

now = datetime.datetime.now()
get_week_list(now)
d = '2022-03-24'
now = datetime.datetime.strptime(d, "%Y-%m-%d")
get_week_list(now)
`