https://www.practicepython.org/exercise/2014/03/26/08-rock-paper-scissors.html

08-rock-paper-scissors.py

def rps():
    print('ROCK - PAPER - SCISSORS: \nRock beats scissors \nScissors beats paper \nPaper beats rock\n')

    while True:
        yn = input("Want to play?  Yes or No:  ").lower()
        if yn[0] == 'y':
            play()
        else:
            print('\nOK. Maybe later.')
            break

def play():
    one = input('Player One, choose either rock(R), paper(P), or scissors(S)? ').lower()
    two = input('Player Two, choose either rock(R), paper(P), or scissors(S)? ').lower()
    acceptible = ['r','p','s','rock','paper','scissors']
    print('\nplayer one: ', one, '\nplayer two: ', two)

    if one.lower() in acceptible and two.lower() in acceptible:
        if one[0] == two[0]:
            print( 'Tie')
        elif one[0] == 'r':
            if two[0] == 'p':
                print('PLAYER TWO WINS!')
            else:
                print('PLAYER ONE WINS!')
        elif one[0] == 'p':
            if two[0] == 's':
                print('PLAYER TWO WINS!')
            else:
                print('PLAYER ONE WINS!')
        elif one[0] == 's':
            if two[0] == 'r':
                print('PLAYER TWO WINS!')
            else:
                print('PLAYER ONE WINS!')
    else:
        print("Something went wrong. Be sure to enter either rock, r, paper, p, scissors, or s.\n Try again:\n")
    
rps()