import time

def time_stamp(days):

    hours = int(days)

    t = time.strftime("%Y-%m-%d",time.localtime(time.time() - days*60*60*24))  # 60秒*60分钟*24小时*days天

    return t

>>> time_stamp(0) #今天

2022-12-08

>>> time_stamp(1) #昨天

2022-12-07

import pandas as pd  #这里要使用模块pandas

df = pd.date_range('2021-08-28','2021-09-01')

for i in range(len(df)):

    Time.append(str(df[i]).split()[0])

>>> Time

['2021-08-28', '2021-08-29', '2021-08-30', '2021-08-31', '2021-09-01']