tips for pickling and hiding passwords

Question

I am very new to python and could use a little help, I created a password locker program to store and recall accounts, logins and passwords for various accounts which requires 1 password to view all the stored info. this is my first program involving the pickle module and could use some input on how to increase my efficiency in using it, also is there a way to increase the encryption of the stored info so words can't be seen in the pickle file. Thanks!

here is what I have going on.

#! python3

import sys
import pickle

PIK = "pickle.pkl"

account = []

login = []

password = []    

print('What is your password?')
while True:
    p = input() 
    if p == 'springtime':
        break
    else:
        print('Incorrect password')
        continue

while True:
    try:
        with open(PIK, 'rb') as f:
            f.close()
            break
    except FileNotFoundError:
        with open(PIK, 'ab') as f:
            pickle.dump(account, f)
            pickle.dump(login, f)

            pickle.dump(password, f)
            f.close()
            break

with open(PIK, 'rb') as f:      
    while True:
        try:           
            account = pickle.load(f)

            login = pickle.load(f)
            password = pickle.load(f)
        except EOFError:
            break


def add():
    while True:
        print('What type of account is this? CANCEL to menu')
        y = input()
        if y.lower() == 'cancel':
            menu()
            break
        elif y.lower() != 'cancel':
            print('Are you sure this is the account type?(y/n): ' + y)
            confirm = input()
            if confirm.lower() == 'y':
                account.append(y)
                break
            else:
                continue

    while True:
        print('What is the login for the account? CANCEL to menu')
        x = input()
        if x.lower() == 'cancel':
            menu()
            break

        elif x.lower() != 'cancel':
            print('Are you sure this is the login?(y/n): ' + x)
            confirm = input()
            if confirm.lower() == 'y':
                login.append(x)
                break
            else:
                continue

    while True:    
        print('What is the password for the account? CANCEL to menu')
        z = input()
        if z.lower() == 'cancel':
            menu()
        elif x.lower != 'cancel':
            print('Are you sure this is the password?(y/n): ' + z)
            confirm = input()
            if confirm.lower() == 'y':
                password.append(z)
                print('Would you like to create another account?(y/n)')
                answer = input()
                if answer.lower() == 'y':
                    add()
                    break
                elif answer.lower() == 'n':
                    with open(PIK, 'ab') as f:
                        pickle.dump(account, f)
                        pickle.dump(login, f)
                        pickle.dump(password, f)
                        f.close()
                        menu()
                        break                   
        elif confirm.lower() == 'n':
            menu()
            break


def delete():
        snap()
        print('What account would you like to delete? (1-100) CANCEL to menu')
        selection = input()
        if selection.lower() == 'cancel':

            menu()
        else:
            try:
                result = int(selection)-1
                del account[result]
                del login[result]
                del password[result]
                with open(PIK, 'ab') as f:
                    pickle.dump(account, f)
                    pickle.dump(login, f)
                    pickle.dump(password, f)
                    f.close()
            except IndexError:
                print('account does not exist, try again')
                delete()     
            except ValueError:
                print('Please select account # or CANCEL')
                delete()
            print('Would you like to delete another account?(y/n)')
            d = input()
            if d.lower() == 'y':
                delete()
            elif d.lower() == 'n':
                menu()


def view():
    snap()
    menu()

def menu():
    print('Would you like to DELETE, ADD, or VIEW an account? (enter to EXIT)')
    d = input()
    if d.lower() == 'delete':
        delete()
    elif d.lower() == 'add':
        add()
    elif d.lower() == 'view':
        view()
    elif d == '':
        exit()
    else:
        menu()

def snap():
    for i in range(len(account)):
        print('\n*******', i+1, '*******\nACCOUNT: ', account[i], '\nLOGIN: ', login[i], '\nPASSWORD: ', password[i], '\n')     
menu()