Why is this Variable not defined?

[Beastman]

i am trying to create a simple database with inputs of friends name and age but the lasts variable its not defined apparently

import pickle

class aFriend:
    def __init__(self, name , age):
        self.name = name
        self.age = age
        self.namePlusAge  = []
    def addFriend(self, friend, age):
        self.namePlusAge = age
    def deleteFriend(self, friend, age):
        self.namePlusAge.pop(friend,None)

    def addingToDatabase(name):
        database = open("ListOfFriends.txt")
        pickle.dump(name, database, "wb")
        database.close()
    def readNameDataBase():
        read = open("ListOfFriends.txt","rb")
        readData = pickle.load(read)
        for key in newFriend.namePlusAge.keys():
            print(key)
        read.close()

    def readAgeDatabase():
        read = open("ListOfFriends.txt", "rb")
        readData = pickle.load(read)
        for key in newFriend.namePlusAge.keys():
            print(key)
        read.close()
def produceMenu():
    print("""
    1 - Add Friend
    2 - Delete a Friend
    3 - List All Friends names
    4 - List All Friend Ages
    5 - Quit
    """)

def validateMenu():
    choice = int(input("Select an option"))
    if choice == 1:
        newFriend.addFriend(str(input("what is the friends name?")), input("What is your frriends age?"))
        addingToDatabase(newFriend.namePlusAge)
        produceMenu()
        validateMenu()
    elif choice == 2:
        newFriend.deleteFriend(str(input("What is the friends name you wish to delete?"), input("What is the friends age you wish to delete")))
        addingToDatabase(newFriend.namePlusAge)
        produceMenu()
        validateMenu()
    elif choice == 3:
        readNameDataBase()
        produceMenu()
        validateMenu()
    elif choice == 4:
        readAgeDataBase()
        produceMenu()
        ValidateMenu()
    elif coice == 5:
        quit()
    else:
        produceMenu()
        validateMenu()
                
produceMenu()
validateMenu()
newFriend = aFriend(str(input("Input Your Name: ")), (input("Input Your Age: ")))

[bvdet]

When validateMenu() is called, newFriend has not been defined.