login_systems.py

import Databases.database_interaction as databaseInteraction
from getpass import getpass
#declare global CONSTANTS
MAX_REGISTER_ATTEMPTS = 4
MAX_LOGIN_ATTEMPTS = 4

#omitted code that isn’t mine

            #for register
            for attempts in range(MAX_REGISTER_ATTEMPTS, 0, -1):
                username = input('To register: Enter username >').strip()
                password = input('Enter password >')
                try:
                    databaseInteraction.CreateUser(username, password)
                    return system_type,username,input("Registration and login successful. What would you like to ask me? ")
                except: #raised if username not unique
                    print('Error: Username already exists.')
                    print('Attempts remaining: ' + str(attempts - 1))

            print('Out of attempts. Logging in as Guest.')
            return system_type,"Guest",input("What would you like to ask me? ")

#omitted code that isn’t mine

            #for login 
            for attempts in range(MAX_LOGIN_ATTEMPTS, 0, -1):
                username = input('To login: Enter username >')
                #usage for getpass found from https://stackoverflow.com/a/9202236
                password = getpass('Enter password (input hidden) >')
                userExists, successful = databaseInteraction.CheckUsernamePasswordMatch(username, password)
                if successful:
                    return system_type,username,input("Login successful. What would you like to ask me? ")
                elif userExists:
                    print('Password incorrect.')
                else:
                    print('Username incorrect.')
                print('Attempts remaining: ' + str(attempts - 1))

            print('Out of attempts. Logging in as Guest.')
            return system_type,"Guest",input("What would you like to ask me? ")