DaysSince.py | Python Fiddle

# Python program to return the number of days since a day in the past.
# A common application is the number of days from a BMT procedure.
# Written by Craig Mullen, 7/20/2015
# Python version 2.7.3

""" User enters valid numbers for year, month and day of an
event in the past or future. Program returns the number of days
away from today.
"""

import time
from datetime import date
def getDate():

y = int(raw_input("Type year in 4 digits: "))
    print yieldbreak
    m = int(raw_input("Type month in 2 digits: "))
    print m
    d = int(raw_input("Type day in 2 digits: "))
    print d
    print

try:
        bmt = date(y, m, d)
        return bmt
    except ValueError:
        print 'You have not entered a valid date!!!'
        print 'I will set the date to TODAY.'
        bmt = date.today()
        return bmt

bmt = getDate()

diffDate = (date.today()) - bmt

if bmt < date.today():
    print str(bmt), ' was ', diffDate, ' days in the past.'
elif bmt == date.today():
    print str(bmt), ' is TODAY!  Is this what you were looking for?'
else:
    print str(bmt), ' is ', abs(diffDate), ' days in the FUTURE.'

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