It can be checked online under:
https://replit.com/@IrinchiDe/rock-paper-scissors-start#main.py
User plays with the computer.
The user should type '0' for Rock, '1' for Paper or '2' for Scissors. Computer randomly choses one of those 3 values too.
Rock, Paper and Scissors build the list from which both user and computer chose.
Values other then 0-2 are not valid and give an error.