Bad code

age-100-years.py

#!/usr/bin/env python3

import datetime


def get_age_validation():

    while True:
        try:
            age = input("Enter your age as an integer: ")
            age = int(age)
            return age

        except ValueError as e:

            if not age:
                print("Age value can't be empty.")

            else:
                print("Not a valid integer.\n\n" +
                      "Try to enter your age again\n\n")


def older_than_hundred():

    print("It seems you're 100 or older than 100.\n\n" +
          "This program can't run in that case...")
    exit(1)


def year_when_hundred(age, name):

    year = datetime.date.today().year + (100 - age)

    print("Hey, " + name + " the year you'll turn 100 is: " + str(year))


def main():

    name = input("Enter your name: ")

    age = get_age_validation()

    if age >= 100:
        older_than_hundred()

    year_when_hundred(age, name)

if __name__ == '__main__':
    main()