#  Birthdays.py  Copyright (c) Kari Laitinen

#  http://www.naturalprogramming.com

#  2006-05-01  File created.
#  2009-01-22  class ISODate used in place of Date
#  2022-12-18  Converted to Python 3.

#  During compilation and execution, the file ISODate.py must be in
#  the same folder together with this program.

from ISODate import ISODate

print( "\n Type in your date of birth as YYYY-MM-DD"     \
      "\n Use four digits for the year and two digits"  \
      "\n for the month and day:  ", end="" )

date_of_birth_as_string  =  input()

date_of_birth  =  ISODate( date_of_birth_as_string )

print( "\n   You were born on a %s"  %  date_of_birth.get_day_of_week() )
print( "   Here are your days to celebrate. You are" )

years_to_celebrate  =  10

while  years_to_celebrate  <  80  :

   date_to_celebrate  =  ISODate( date_of_birth.year()  +  years_to_celebrate,
                                  date_of_birth.month(),
                                  date_of_birth.day() )

   print( "\n   %d years old on %s (%s)"  %  ( years_to_celebrate,
          date_to_celebrate, date_to_celebrate.get_day_of_week() ), end="" )

   years_to_celebrate  =  years_to_celebrate  +  10

print( "\n" )