how to add and subtract days datetime python

a_date = datetime.date(2015, 10, 10)
days = datetime.timedelta(5)

new_date = a_date - days
#Subtract 5 days from a_date


print(new_date)
#OUTPUT
#2015-10-05

Here is what the above code is Doing:
1. We create a datetime.date object with the date 2015-10-10.
2. We create a datetime.timedelta object with the number 5.
3. We subtract the datetime.timedelta object from the datetime.date object.
4. We print the result.

The output is 2015-10-05.