Python新手-石头，纸，剪刀

Question

我对Python非常陌生，我决定在不复制别人的代码的情况下，为自己设计一款石头、纸、剪刀游戏。不过，我需要一个毕多诺大人的帮助！

我在这里看到了摇滚，纸，剪刀的许多其他变体，但没有解释为什么我的版本不起作用。我的程序基本上遵循这样的格式:在开始时设置空变量，定义4个函数，打印简介文本，接收播放器输入，随机选择计算机的选择，然后评估它是赢了还是输了。

当玩家选择他们不想玩的游戏时，这个循环就会中断。(这一点工作得很好)

但是，每当我运行代码时，它总是给出抽签，并且似乎不为计算机的选择函数调用存储任何数据。有人知道我做错了什么吗？

非常感谢！

import random

playerAnswer = ''
computerAnswer = ''
winsTotal = 0
timesPlayed = 0

def showIntroText():
    print('Time to play Rock, Paper, Scissors.')
    print('Type in your choice below:')

def playerChoose():
    playerInput = input()
    return

def computerChoose():
    randomNumber = random.randint(1, 3)
    if randomNumber == 1:
        computerPick = 'Paper'
    elif randomNumber == 2:
        computerPick = 'Scissors'
    else:
        computerPick = 'Rock'
    return

def assessResult():
    if playerAnswer == computerAnswer:
        print('Draw!')
    elif playerAnswer == 'Rock' and computerAnswer == 'Paper':
        print('Paper beats Rock. You lose!')
    elif playerAnswer == 'Paper' and computerAnswer == 'Scissors':
        print('Scissors cuts Paper. You lose!')
    elif playerAnswer == 'Scissors' and computerAnswer == 'Rock':
        print('Rock blunts Scissors. You lose!')
    else:
        print('You win!')
        winsTotal += 1
    return

while True:
    timesPlayed += 1

    showIntroText()

    playerAnswer = playerChoose()
    computerAnswer = computerChoose()

    assessResult()

    print('Do you want to play again? (y/n)')
    playAgain = input()
    if playAgain == 'n':
        break

print('Thank you for playing! You played ' + str(timesPlayed) + ' games.')

Answer 1

在大多数情况下，您忽略了返回值。

**在playerChoose()中添加“返回playerInput”，而不是只返回。

**在computerChoose()中添加‘返回computerPick’，而不是返回。

**在assessResult().中将winsTotal变量作为'winsTotal = 0‘使用之前初始化它

**在程序开始时，您已经初始化的变量超出了函数的范围。

请检查此StackOverFlow link以了解中变量的范围。

**在assessResult()中添加‘返回winsTotal’，而不是返回。

import random

def showIntroText():
    print('Time to play Rock, Paper, Scissors.')
    print('Type in your choice below:')

def playerChoose():
    playerInput = input()
    return playerInput

def computerChoose():
    randomNumber = random.randint(1, 3)
    if randomNumber == 1:
        computerPick = 'Paper'
    elif randomNumber == 2:
        computerPick = 'Scissors'
    else:
        computerPick = 'Rock'
    return computerPick

def assessResult(winsTotal):
    if playerAnswer == computerAnswer:
        print('Draw!')
    elif playerAnswer == 'Rock' and computerAnswer == 'Paper':
        print('Paper beats Rock. You lose!')
    elif playerAnswer == 'Paper' and computerAnswer == 'Scissors':
        print('Scissors cuts Paper. You lose!')
    elif playerAnswer == 'Scissors' and computerAnswer == 'Rock':
        print('Rock blunts Scissors. You lose!')
    else:
        print('You win!')
        winsTotal += 1
    return winsTotal


total_win = 0
while True:

    timesPlayed += 1

    showIntroText()

    playerAnswer = playerChoose()
    computerAnswer = computerChoose()

    total_win = assessResult(total_win)

    print('Do you want to play again? (y/n)')
    playAgain = input()
    if playAgain == 'n':
        break

print('Thank you for playing! You played ' + str(timesPlayed) + ' games.' + 'Out of which you won '+ str(total_win))

输出：

   C:\Users\dinesh_pundkar\Desktop>python c.py
Time to play Rock, Paper, Scissors.
Type in your choice below:
"Rock"
You win!
Do you want to play again? (y/n)
"y"
Time to play Rock, Paper, Scissors.
Type in your choice below:
"Rock"
Draw!
Do you want to play again? (y/n)
"y"
Time to play Rock, Paper, Scissors.
Type in your choice below:
"Rock"
Paper beats Rock. You lose!
Do you want to play again? (y/n)
"y"
Time to play Rock, Paper, Scissors.
Type in your choice below:
"Rock"
Paper beats Rock. You lose!
Do you want to play again? (y/n)
"n"
Thank you for playing! You played 4 games.Out of which you won 1

Answer 2

这总是一个平局，因为您没有返回函数的答案，playerAnswer和computerAnswer都没有返回任何答案。

Answer 3

在函数中添加输入和返回

def computerChoose和def assessResult不返回

例如，通过下面的代码，您可以玩这个游戏：

import random

playerAnswer = ''
computerAnswer = ''
winsTotal = 0
timesPlayed = 0


def playerChoose():
    playerInput = input("insert:")
    return playerInput


def computerChoose():
    randomNumber = random.randint(1, 3)
    if randomNumber == 1:
        computerPick = 'Paper'
    elif randomNumber == 2:
        computerPick = 'Scissors'
    else:
        computerPick = 'Rock'
    return computerPick


def assessResult(playerAnswer, computerAnswer):
    if playerAnswer == computerAnswer:
        print('Draw!')
    elif playerAnswer == 'Rock' and computerAnswer == 'Paper':
        print('Paper beats Rock. You lose!')
    elif playerAnswer == 'Paper' and computerAnswer == 'Scissors':
        print('Scissors cuts Paper. You lose!')
    elif playerAnswer == 'Scissors' and computerAnswer == 'Rock':
        print('Rock blunts Scissors. You lose!')
    else:
        print('You win!')
    return


while True:
    timesPlayed += 1

    playerAnswer = playerChoose()
    computerAnswer = computerChoose()

    assessResult(playerAnswer,computerAnswer)

    print('Do you want to play again? (y/n)')
    playAgain = input()
    if playAgain == 'n':
        break

print('Thank you for playing! You played ' + str(timesPlayed) + ' games.')