datetime模块

# datetime模块可以看成是时间加减的模块
import datetime

1. 返回当前时间

   print(datetime.datetime.now())

   2019-08-16 19:33:39.557899

2. 更改时间

   # 当前时间+3天
   print(datetime.datetime.now() + datetime.timedelta(3))

   2019-08-19 19:33:39.557899

   当前时间3小时
   print(datetime.datetime.now() + datetime.timedelta(hours=3))

   2019-08-19 22:33:39.557899

   # 当前时间+3分钟
   print(datetime.datetime.now() + datetime.timedelta(minutes=3))

   2019-08-19 22:33:42.557899

3. 时间替换

   # 时间替换
   c_time = datetime.datetime.now()
   print(c_time.replace(minute=20, hour=5, second=13))

   2019-08-16 05:20:13.617117

datetime模块

原文：https://www.cnblogs.com/dadazunzhe/p/11403988.html