1、时间格式：time

import time,random,datetime
dat=time.strftime("%Y%m%d%H%M%S",time.localtime())
dat2 = time.strftime("%Y-%m-%d",time.localtime())
print (dat,dat2)
>>>
20191219195354       2019-12-19

# 今天日期
today = datetime.date.today()
# 昨天时间
yesterday = today - datetime.timedelta(days=1)
# 明天时间
tomorrow = today + datetime.timedelta(days=1)
#后天时间
acquire = today + datetime.timedelta(days=2)
print(today,tomorrow,acquire)
>>>
2019-12-19    2019-12-20     2019-12-21

2.datetime

import string,random,time,datetime
def tampe(days1):
    dat1 = str(datetime.timedelta(days=days1) + datetime.date.today())
    ti1 = time.strptime(dat1, "%Y-%m-%d")
    ti2 = int(time.mktime(ti1)) * 1000
    return ti2

3.今天明天昨天

def days(no1):
    import time
    #当前时间以2022-02-15形式展示
    todayday= time.strftime("%Y-%m-%d", time.localtime())
    #当前时间以十位的时间戳1644854400形式展示
    todaytamp = int(time.mktime(time.strptime(todayday, "%Y-%m-%d")))
    if no1==1:
        daytamp=todaytamp
    #+1天，也就是明天
    elif no1==2:
        daytamp=todaytamp+86400000
    #-1天，也就是昨天
    elif no1 == 3:
        daytamp = todaytamp - 86400000
    else:
        daytamp=todaytamp
    print(daytamp)
    return daytamp
if __name__=='__main__':
    days(1)
    days(2)
    days(3)