python 日期加上天数、周数、小时数timedelta

python 日期加上天数、周数、小时数timedelta

1、timedelta - days：几天后

import datetime as dt
date1 = dt.datetime(2019, 7, 26, 15, 35, 10) 
aft_days = date1 + dt.timedelta(days = 3)  # datetime.datetime(2019, 7, 29, 15, 35, 10)

2 、timedelta - weeks：几周后

aft_weeks = date1 + dt.timedelta(weeks = 3)  # datetime.datetime(2019, 8, 16, 15, 35, 10)

3、timedelta - hours：几个小时后

aft_hours = date1 + dt.timedelta(hours = 10)  # datetime.datetime(2019, 7, 27, 1, 35, 10)

python 日期减去天数、周数、小时数

1、timedelta - days：几天前

ex_days = date1 - dt.timedelta(days = 3)  # datetime.datetime(2019, 7, 23, 15, 35, 10)

2 、timedelta - weeks：几周前

ex_weeks = date1 - dt.timedelta(weeks = 3)  # datetime.datetime(2019, 7, 5, 15, 35, 10)

3、timedelta - hours：几个小时前

ex_hours = date1 - dt.timedelta(hours = 10)  # datetime.datetime(2019, 7, 26, 5, 35, 10)