时间操作（前一天、后一天、间隔天数）

1、获取当前时间：

datetime.datetime.now()
datetime.date.today()
time.time()
time.localtime()

2、获取前一天、后一天

#获取后一天时间（如 2015-03-07）
today=datetime.date.today()
temp=datetime.timedelta(days=1)
nextDay=today+temp
print(nextDay)

#获取前一天时间（如 2015-03-05）
today=datetime.date.today()
temp=datetime.timedelta(days=1)
nextDay=today+temp
print(nextDay)

3、获取时间间隔(day1和day2大小前后顺序都可以)

day1=datetime.date(2019,8,8)
day2=datetime.date(2019,8,3)
longTimeDay=(day1-day2).days   #也可以(day1-day2).seconds 获取秒
print(abs(longTimeDay))

 4、格式化日期

import time
a = time.time()
m, s = divmod(a , 60)
h, m = divmod(m, 60)
print ("%02d:%02d:%02d" % (h, m, s))

print (time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()) )
print (time.strftime("%Y %b %d %H:%M:%S %a", time.localtime()) )

a = "Sat Mar 28 22:24:24 2016"
print (time.mktime(time.strptime(a,"%a %b %d %H:%M:%S %Y")))

      

 参考：

https://blog.csdn.net/qq_18299691/article/details/82941947

https://www.cnblogs.com/williamjie/p/9179438.html