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User Login 2 - File Operations

Learning Objectives

We are going to learn:

1. How to open, read and write to files in Python.

Exercises

Download the Medialib ex10 login.txt file and 5 image files (as shown below) from the gallery and modify your program from exercise 9 to allow for user account creation.

Write a function to read the login.txt file using open("login.txt", "r", encoding="utf-8").readlines(). Parse each line and store the username and password into a dictionary

With a dictionary that have usernames as keys and passwords as values, which is like login_dict={“taro”: “1234”, “hanako”: ”asdf”, ...}, create a user login program that loops the following processes until the user successfully logged in.

1. If the username does not exist, then print “No such user!”, and display “wrong_user.png”, then use input() function with a prompt “Do you want to create a new account for the user (yes/no): ” to get the user’s input.
2. If the user inputs "yes", then display “password.png” and use input() function with a prompt “Password: ” to get the new password. And then, save the new username and password to the file “login.txt” and print “New user created!”. At the end, display “welcome.png”, and finish the program.