Python script for printing time elapsed since stuff

howold.py

#!/usr/bin/env python

from datetime import date

def how_long_between(dayA, dayB):
  total_days = (dayA - dayB).days

  years = total_days / 365
  days = total_days % 365
  months = days / 31
  weeks = days / 7

  return \
    '%d days: %d years and %d days (%d months, or %d weeks)' \
    % (total_days, years, days, months, weeks)
    
people = [
  ['Barack Obama', 1961, 8, 4],
  ['George W. Bush', 1946, 7, 6]
]

now = date.today()
for person in people:
  print '%s:\n\t%s' % \
    (person[0], how_long_between(now, date(person[1], person[2], person[3] )))