python - 如何优化循环和条件语句？

Question

winner = False

def player():
    global winner
    while winner==False:

        print("player 1: please choose rock/paper/scissor !")
        choice1 = input()
        print("player 2: please choose rock/paper/scissor !")        
        choice2 = input()

        if choice1!=choice2:
            if choice1=="rock" and choice2=="scissor" :
                print("player 1 is the winner, Congrats!!")

            elif choice1=="rock" and choice2=="paper" :
                print("player 2 is the winner, Congrats!!")

            elif choice2=="rock" and choice1=="scissor" :
                print("player 2 is the winner, Congrats!!")

            elif choice2=="rock" and choice1=="paper" :
                print("player 1 is the winner, Congrats!!")

            elif choice1=="scissor" and choice2=="paper" :
                print("player 1 is the winner, Congrats!!")

            elif choice1=="paper" and choice2=="scissor" :
                print("player 2 is the winner, Congrats!!")
        else:
            print("its a draw")


        print("do you want to start a new game?,yes or no")
        answer = input()
        if answer=="yes":
            print("lets start another game!")
            winner = False
        elif answer=="no":
            print("see you next time!")
            winner = True


player()

正如你所看到的，我的代码中有太多低效的 if 语句，如果可能的话，我如何才能最小化它们

Answer 1

def player():
    while True:

        print("player 1: please choose rock/paper/scissor !")
        choice1 = input()
        print("player 2: please choose rock/paper/scissor !")
        choice2 = input()

        beats = dict(
            rock='scissor',
            scissor='paper',
            paper='rock',
        )

        if choice1 != choice2:
            if beats[choice1] == choice2:
                winner = 1
            else:
                winner = 2
            print("player %s is the winner, Congrats!!" % winner)
        else:
            print("its a draw")

        print("do you want to start a new game?,yes or no")
        answer = input()
        if answer == "yes":
            print("lets start another game!")
        else:
            print("see you next time!")
            break


player()