I'm in the process of learning Python, but I'm still very new and having some difficulty. I came across a practice example, that I could use some help with.

Write a program for user registration: First the program tells the user enter 1 to register, enter 2 to sign in, enter 3 to quit After the user enter 1, the program ask the user to input username and password, the

username can not be the same as any existing ones.

After registration, tell user Congratulations! You have an account with us direct

user back to the starting point.

If the user enter 2, hint the user either Wrong password or Wrong username

until user enters a correct combination

Display Welcome back to your account! after user entered the correct user name

and password.