初级python游戏：垃圾，whileloop问题

Question

我是编程新手，我的任务是做一个垃圾游戏。游戏一直在进行，直到你被要求再次玩时回答“否”。一旦你输入“否”，它应该显示你赢了和输了多少次。这样做效果很好（不记分）：

import random

def main():

    playGame = input("Would you like to play Craps? (Enter yes or no): ")
    while playGame == 'yes':
        roll = input("Press Enter to roll the dice")
        rollDice1 = random.randint(1, 6)
        rollDice2 = random.randint(1, 6)
        print("You got a", rollDice1, "and a", rollDice2)
        rolledDice = rollDice1 + rollDice2
        print("you rolled a", rolledDice)
        if rolledDice == 7 or rolledDice == 11:
            print("IT'S YOUR LUCKY DAY! YOU WIN!")

        elif rolledDice == 2 or rolledDice == 3 or rolledDice == 12:
            print("YOU LOSE! BETTER LUCK NEXT TIME!")

        else:
            print("YOU NEITHER WIN NOR LOSE!")

        playGame = input("Try again? (Enter yes or no): ")
        if playGame == "no":
            print("Place holder")
main()

当我试图记分时，当你赢或输的时候，它不会循环。（尽管在你不赢也不输的情况下，它仍然会循环）：

import random

def main():
    wins = 0
    losses = 0

    playGame = input("Would you like to play Craps? (Enter yes or no): ")
    while playGame == 'yes':
        roll = input("Press Enter to roll the dice")
        rollDice1 = random.randint(1, 6)
        rollDice2 = random.randint(1, 6)
        print("You got a", rollDice1, "and a", rollDice2)
        rolledDice = rollDice1 + rollDice2
        print("you rolled a", rolledDice)
        if rolledDice == 7 or rolledDice == 11:
            print("IT'S YOUR LUCKY DAY! YOU WIN!")
            wins = wins + 1
            return wins

        elif rolledDice == 2 or rolledDice == 3 or rolledDice == 12:
            print("YOU LOSE! BETTER LUCK NEXT TIME!")
            losses = losses + 1
            return losses

        else:
            print("YOU NEITHER WIN NOR LOSE!")

        playGame = input("Try again? (Enter yes or no): ")
        if playGame == "no":
            print("Wins: ", wins)
            print("Losses: ", losses)
main()

我非常感谢您的帮助和建议。就像我说的，我是新手，所以请试着用一种简单的方式来解释什么是错的，我应该做什么

Answer 1

如果从函数内部return某个内容，则将其保留—这就是while循环无法工作的原因：

def main():
    wins = 0
    losses = 0

    playGame = input("Would you like to play Craps? (Enter yes or no): ")
    while playGame == 'yes':
        roll = input("Press Enter to roll the dice")
        rollDice1 = random.randint(1, 6)
        rollDice2 = random.randint(1, 6)
        print("You got a", rollDice1, "and a", rollDice2)
        rolledDice = rollDice1 + rollDice2
        print("you rolled a", rolledDice)
        if rolledDice == 7 or rolledDice == 11:
            print("IT'S YOUR LUCKY DAY! YOU WIN!")
            wins = wins + 1
            return wins   # EXITS main() - simply delete this row

        elif rolledDice == 2 or rolledDice == 3 or rolledDice == 12:
            print("YOU LOSE! BETTER LUCK NEXT TIME!")
            losses = losses + 1
            return losses # EXITS main() - simply delete this row

        else:
            print("YOU NEITHER WIN NOR LOSE!")

        playGame = input("Try again? (Enter yes or no): ")
        if playGame == "no":
            print("Wins: ", wins)
            print("Losses: ", losses)

             return  # add this to exit the function (could use break as well)

main()

Answer 2

不要使用return，而是使用yield。Return结束函数以给出结果，而yield继续函数