def check_age():
    while True:
        try:
            age = int(input('Enter your age: '))
            if age in range(18, 111):
                break
            # elif age in range (0, 19):
            #   break
        except:
            pass
        print('\nIncorrect input, try again')
    print("left loop")
    print(age)
    return age


def number_line(age):
    for i in range(1, 19):
        if i == age:
            print("This is how old you are:", age)
            continue
        elif i == 18:
            print("18: This is the voting age")
            continue
        print(i)


def main():
    check_age()
    number_line(age)

main()