rock_paper_scissors.py

import random
from collections import Counter
from enum import Enum, IntEnum, unique


@unique
class Outcome(Enum):
    COMPUTER = 2
    TIED = 0
    PLAYER = 1


@unique
class Choices(IntEnum):
    ROCK = 1
    PAPER = 2
    SCISSORS = 3


class Hand:
    count = 0
    sequence: int

    def __init__(self, player_guess: str, computer_guess: str):
        if player_guess.upper() not in [choice.name for choice in Choices]:
            raise ValueError(f"The value {player_guess!r} is invalid.")

        self.player_guess = player_guess.upper()
        self.computer_guess = computer_guess
        self.outcome = Outcome((Choices[self.player_guess].value - Choices[self.computer_guess].value) % len(Choices))
        self.message = "Tied."
        if self.outcome == Outcome.COMPUTER:
            self.message = "Computer wins."
        elif self.outcome == Outcome.PLAYER:
            self.message = "Player wins."

        self.sequence = Hand.count
        Hand.count += 1

    def __str__(self):
        return f"sequence={self.sequence}, " \
               f"player_guess={self.player_guess!r}, " \
               f"computer_guess={self.computer_guess!r}, " \
               f"outcome={self.outcome!r}, "

    def __repr__(self):
        return f"{self.__class__.__name__}" \
               f"(player_guess={self.player_guess!r}, " \
               f"computer_guess={self.computer_guess!r})"


BESTOF = 5
game_history = []
guess_options = [choice.name for choice in Choices]

while not any(
        (count == BESTOF // 2 + 1
         for key, count in
         (Counter([hand.outcome for hand in game_history]).items())
         if key != Outcome.TIED
         )
):

    computers_guess = random.choice(guess_options)
    players_guess = random.choice(guess_options)  # input("Make your guess: ")  #

    try:
        game_history.append(Hand(players_guess, computers_guess))
        print(f"[{len(game_history)}]: You chose {players_guess!r}, the computer chose {computers_guess!r} - "
              f"{game_history[-1].message}")
    except ValueError as e:
        print(e)

print(f"\n=======\nGame ends after {len(game_history)} hands. ")
print(f"There were {sum([True for hand in game_history if hand.outcome == Outcome.TIED])} ties, "
      f"computer won {sum([True for hand in game_history if hand.outcome == Outcome.COMPUTER])} hands, "
      f"you won {sum([True for hand in game_history if hand.outcome == Outcome.PLAYER])} hands.\n"
      f"Result: {game_history[-1].message} ")