Another Rock, Paper, Scissors

[Yoriz]

import random


class GameItem:

    def __eq__(self, other):
        return type(other) == type(self)


class Rock(GameItem):
    name = 'Rock'
    win = 'Rock blunts Scissors'

    def __gt__(self, other):
        return isinstance(other, Scissors)


class Paper(GameItem):
    name = 'Paper'
    win = 'Paper covers Rock'

    def __gt__(self, other):
        return isinstance(other, Rock)


class Scissors(GameItem):
    name = 'Scissors'
    win = 'Scissors cuts Paper'

    def __gt__(self, other):
        return isinstance(other, Paper)


items_dict = {'R': Rock, 'P': Paper, 'S': Scissors}


class Player:
    def __init__(self, name):
        self.name = name
        self.wins = 0
        self.choice = None

    def choice_str(self):
        return f'{self.name} choose: {self.choice.name}'

    def score_str(self):
        return f'{self.name}\'s score: {self.wins}'

    def win_str(self):
        return f'{self.name} won because {self.choice.win}'


class HumanPlayer(Player):

    def make_choice(self):
        choices = ', '.join(item.name for item in items_dict.values())
        letter_choices = ', '.join(items_dict.keys())
        text = (f'{self.name} please choose from {choices}\n'
                f'Enter ({letter_choices}) ')
        while True:
            result = input(text).upper()
            item_choice = items_dict.get(result)

            if item_choice:
                self.choice = item_choice()
                return

            print('Incorrect choice!')


class ComputerPlayer(Player):

    def make_choice(self):
        choice = random.choice(tuple(items_dict.values()))
        self.choice = choice()


class Game:
    def __init__(self, player1, player2):
        self.player1 = player1
        self.player2 = player2
        self.ties = 0
        self.last_winner = None

    def check_result(self):
        if self.player1.choice == self.player2.choice:
            self.last_winner = None
            self.ties += 1
            return
        elif self.player1.choice > self.player2.choice:
            self.last_winner = self.player1
        else:
            self.last_winner = self.player2

        self.last_winner.wins += 1

    def output_result(self):
        print(f'{self.player1.choice_str()}, {self.player2.choice_str()}')

        if self.last_winner:
            print(self.last_winner.win_str())
        else:
            print('It was a tie!')

        print((f'{self.player1.score_str()}\n'
               f'{self.player2.score_str()}\n'
               f'Ties: {self.ties}\n'))

    def play(self):
        self.player1.make_choice()
        self.player2.make_choice()
        self.check_result()
        self.output_result()

    def main_loop(self):
        while True:
            self.play()
            result = input('Another round, Enter \'y\' ').upper()
            if result != 'Y':
                break


class GameMenu:
    def __init__(self):
        self.game = None
        self.mode_choices = tuple(number for number in range(4))
        self.modes_text = (f'\nPlease choose a game mode:\n'
                           '1 for human Vs computer\n'
                           '2 for computer VS computer\n'
                           '3 for human Vs human\n'
                           'or 0 to exit game'
                           f'Please choose from {self.mode_choices} ')
        print('Welcome to Rock, Paper, Scissors')

    def mode1(self, name):
        self.game = Game(
            HumanPlayer(name), ComputerPlayer('Computer1'))

    def mode2(self):
        self.game = Game(
            ComputerPlayer('Computer1'), ComputerPlayer('Computer2'))

    def mode3(self, name1, name2):
        self.game = Game(
            HumanPlayer(name1), HumanPlayer(name2))

    def main_loop(self):
        while True:
            result = input(self.modes_text)
            if result not in (str(number) for number in self.mode_choices):
                print('\nIncorrect choice!')
                continue
            if result == '0':
                print('Thank you, goodbye')
                break
            elif result == '1':
                self.mode1(
                    input('\nPlease enter your name Player 1 ').capitalize())
            elif result == '2':
                self.mode2()
            elif result == '3':
                self.mode3(
                    input('\nPlease enter your name Player 1 ').capitalize(),
                    input('Please enter your name player 2 ').capitalize())
            self.game.main_loop()


if __name__ == "__main__":
    GameMenu().main_loop()

---

Added another mainloop to enable the choice of another mode