Question

Possible Duplicate:
Best way to find the months between two dates (in python)

I would like to know how I can have the exact number of months for this difference:

date1 = datetime.strptime(str('2011-08-15 12:00:00'), '%Y-%m-%d %H:%M:%S')
date2 = datetime.strptime(str('2012-02-15'), '%Y-%m-%d')

date2-date1 results in

datetime.timedelta(183, 43200)

I would like to know the exact number of months, in this case it should return 5 and not 6 (because of the hour)

Answer 1

Using calendar module to find out how many days each month has, you can simply count the months.

from calendar import monthrange
from datetime import datetime, timedelta

def monthdelta(d1, d2):
    delta = 0
    while True:
        mdays = monthrange(d1.year, d1.month)[1]
        d1 += timedelta(days=mdays)
        if d1 <= d2:
            delta += 1
        else:
            break
    return delta