how to subtract dates in python

1# deltatime is one of good way to manipulate data and time with fine details
2from datetime import datetime, timedelta
3
4# Take a timestamps
5datetime_now = datetime.now()
6print("Current Date and time :- ", datetime_now)
7>>> Current Date and time :-  2021-08-03 13:35:56.827517
8
9# Create a delta time
10datetime_delta = timedelta(weeks = 1, days = 2, hours = 4, minutes = 10,
11                           seconds = 8, milliseconds = 25, microseconds = 8)
12print("Delta datetime :- ", datetime_delta)
13>>> Delta datetime :-  9 days, 4:10:08.025008
14
15 # subtract  datetime_delta
16datetime_new = datetime_now - datetime_delta
17print("Current Date and time minus Delta datetime :- ", datetime_new)
18>>> Current Date and time minus Delta datetime :-  2021-07-25 09:25:48.802509

1from datetime import datetime
2
3def days_between(d1, d2):
4    d1 = datetime.strptime(d1, "%Y-%m-%d")
5    d2 = datetime.strptime(d2, "%Y-%m-%d")
6    return abs((d2 - d1).days)
7