def start_link():
    n_letters = input('How many letters in the link might be (at least 5): ')
    start_point = ('a' + ('1' * (int(n_letters) - 1)))
    open('last_link', 'w').write(start_point)
def start_link():
    n_letters = input('How many letters in the link might be (at least 5): ')
    start_point = ('a' + ('1' * (int(n_letters) - 1)))
    open('last_link', 'w').write(start_point)