calendar arithmetic

[ameliabob 2]

I can see functions allowing the calculations of the difference between two dates but I cannot locate how to find the addition or subtraction of x number of days from a given date.

Is there such a thing in python?

[Ingolme 912]

You create a date() object, and then you can use a timedelta() object to operate with it. Examples are shown here: https://docs.python.org/3/library/datetime.html#datetime.date

A short program to add a number of days to a date might look like this:

d = date(2018, 7, 20)
delta = timedelta(days=5)
d2 = d + delta

There might be a shorter way to write it, but I don't work with Python very often so I'd have to look it up to make sure.