rps.py

import random

def determine_winner(player_choice, computer_choice):
    if player_choice == computer_choice:
        return "It's a tie!"
    elif (player_choice == "rock" and computer_choice == "scissors") or \
         (player_choice == "paper" and computer_choice == "rock") or \
         (player_choice == "scissors" and computer_choice == "paper"):
        return "You win!"
    else:
        return "Computer wins!"

choices = ["rock", "paper", "scissors"]
computer_choice = random.choice(choices)

while True:
    player_choice = input("Choose rock, paper, or scissors: ").lower()

    if player_choice not in choices:
        print("Invalid choice. Please choose rock, paper, or scissors.")
    else:
        result = determine_winner(player_choice, computer_choice)
        print(f"Computer chose {computer_choice}. {result}")
        play_again = input("Do you want to play again? (yes/no): ").lower()
        if play_again != "yes":
            break
        computer_choice = random.choice(choices)