Python: get datetime for '3 years ago today'

In Python, how do I get a datetime object for '3 years ago today'?

UPDATE: FWIW, I don't care hugely about accuracy... i.e. it's Feb 29th today, I don't care whether I'm given Feb 28th or March 1st in my answer. Concision is more important than configurability, in this case.

Solution 1:

If you need to be exact use the dateutil module to calculate relative dates

from datetime import datetime
from dateutil.relativedelta import relativedelta

three_yrs_ago = datetime.now() - relativedelta(years=3)

Solution 2:

import datetime
datetime.datetime.now() - datetime.timedelta(days=3*365)