保存朋友生日的数据

birthdays ={'Alice':'Apr 1','Bob':'Dec 12','Carol':'Mar 4'}
while True:
    print('Enter a name:(black to quit)')
    name = input()
    if name == '':
        break
    if name in birthdays:
        print(birthdays[name]+' is the birthday of '+name)
    else:
        print('I do not have birthday information for '+ name)
        print('what is their birthday?')
        bday = input()
        birthdays.setdefault(name,bday)
        print('birthday database updated.')