Complete Python Program
from date import Date
def main():
# Date before which a person must have been born to be 21 or older.
bornBefore = Date(6, 1, 1988)
# Extract birth dates from the user and determine if 21 or older.
date = promptAndExtractDate()
while date is not None :
if date <= bornBefore :
print( "Is at least 21 years of age: ", date )
date = promptAndExtractDate()
# Prompts for and extracts the Gregorian date components. Returns a
# Date object or None when the user has finished entering dates.
def promptAndExtractDate():
print( "Enter a birth date." )
month = int( input("month (0 to quit): ") )
if month == 0 :
return None
else :
day = int( input("day: ") )
year = int( input("year: ") )
return Date( month, day, year )
# Call the main routine.
main()
