a

import datetime
import math
global today
today = datetime.date.today()
list1 = ["|", " " , "!", "@","$" ,"^", "&", "*", "_", "-", "+", "=", ":", ";", "|", "<",".", ">", "?", "/", "~", "`"]
option = input("Are you a new user select 1\nAre you an existing user select 2\nIf you wich to exit select 3\n")
if option == "1":
    print("Welcome new user")
    while True:
        username = input("what is your first name?: ")
        if username.isalpha():
            break
        else:
            print("please input a word...")


    while True:
        username1 = input("what is your second name?: ")
        if username1.isalpha():
            break
        else:
            print("please input a word...")


    yearin = input("what is the year you are in?: ")
    yearin = int(yearin)
    newyear = (today.year -(yearin) + 7)
    print(newyear)

    newyear = str(newyear)

elif option == "2":
    print ("existing user")
elif option == "3":
    print ("exiting")
else:
    print("you haven't selefcted a correct option")

(username[0:1])
(username1[0:3])
(newyear[2:4])
user = (newyear[2:4]+username[0:1]+username1[0:3])
print(user, "this is your username")

def files():
    file = open("user.txt","w")
    file.write(user+"\n")
    file.close()
files()




def password():
    print("For setting up a account you need to input a password\nyour password will have to include a 8-12 letters\nhas to have a capital\nwill have to include a symbol e.g '$, %, ^, &, *'")
    while True:
        password = input("what is your password: ")

        checker = (sum(1 for c in password if c.isupper()))
        if checker == 0:
            print("You have to have at least one capital in your password: ")
        elif len(password) < 7 or len(password) > 13:
           print("you must have at least 8 - 12 letters in your password: ")
        elif password != list1:
            print("you must have to input at least one character: ")
        else:
            break
    while True:
        password1 = input("please enter the same password: ")
        if password != password1:
            print("they have to be the same please try again: ")
        else:
            print("")
            break

password()