Need help with pseuo -bank account using OOP

[ichabod801]

Sorry, I got my posts mixed up. I thought this was one without any code.

data = {'1': 'abcde', '2': '2357', '3': '11235'}
while True:
    pin = input('pin? ')
    if pin in data:
        text = data[pin]
        while True:
            index = int(input('index? '))
            if index < 0:
                break
            else:
                print(text[index])
    elif pin[0] not in 'qQ':
        print('Invalid pin.')
    else:
        break

Untested, but that's the general idea.