如何阻止我的Python游戏代码在第34行之后关闭？

Question

我三天前才开始学编程。我决定学习Python 3.7.2版。今天我写了这段代码，试图创建一个游戏，在这个游戏中，你输入一个用户名，然后用石头、布、剪刀来对付一个机器人。但是，在输入用户名（第2-4行）之后，Python shell就关闭了。我正在运行的程序，在我的资源管理器，视窗10点击文件。我想这是一个简单的初学者的错误，有人能帮忙吗？你知道吗

我尝试在第4行添加input（）。当我这样做时，Python shell在输入用户名后不会关闭。它什么都不做，只是换行而已。当我在新行中键入一些内容并按Enter键时，shell关闭。你知道吗

这是我的密码：

import random
print('Hello, welcome to Rock, Paper, Scissors. Enter your name to get started.')
usn = input()

def game(choice):
  options = ['rock', 'paper', 'scissors']
  bot = random.choice(options)
  if choice == 'rock' and bot == 'scissors':
    print(usn + ' played rock, I played scissors. You won. Nice!')
  elif choice == 'rock' and bot == 'paper':
    print(usn + ' played rock, I played paper. You lost. Haha, loser!')
  elif choice == 'paper' and bot == 'scissors':
    print(usn + ' played paper, I played scissors. You lost. Haha, loser!')
  elif choice == 'paper' and bot == 'rock':
    print(usn + ' played paper, I played rock. You won. Nice!')
  elif choice == 'scissors' and bot == 'paper':
    print(usn + ' played scissors, I played paper. You won. Nice!')
  elif choice == 'scissors' and bot == 'rocks':
    print(usn + ' played scissors, I played rocks. You lost. Haha, loser!')
  elif choice == bot:
    print("It's a draw, dang it!")

def again(x):
    while True:
        if x == 'Yes':
            game(input('Rock, Paper or Scissors?'))
            again(input('Want to play again? Yes or No'))
        else:
            print('Goodbye. Press Enter to exit.')
            input()

期望：我期望在输入用户名后，我可以输入石头、布或剪刀，然后游戏就可以玩了。 实际结果：pythonshell在输入用户名后关闭。你知道吗

Answer 1

def game(choice):创建一个名为game的函数。您需要告诉python用一个参数执行这个函数：choice 就像这样：game(usn)

Answer 2

您也需要调用game，尽管此时需要声明game。你知道吗

我在这里重构了一些东西，让它们对用户来说更方便一些。你知道吗

• 在game中使用的参数名是username和user_choice，这样就不会影响全局名称（或意外地使用它们）。你知道吗
• again()递归函数被一个while循环所取代，当用户说他们不想再玩时，这个循环被break终止。你知道吗
• RPS和问题输入都是小写和剥离的，所以用户输入“NO”、“NO”、“pAPeR”等就可以了。你知道吗

我建议考虑的下一件事是如何简化game函数中的重复。：）

import random


def game(username, user_choice):
    options = ['rock', 'paper', 'scissors']
    bot = random.choice(options)
    if user_choice == 'rock' and bot == 'scissors':
        print(username + ' played rock, I played scissors. You won. Nice!')
    elif user_choice == 'rock' and bot == 'paper':
        print(username + ' played rock, I played paper. You lost. Haha, loser!')
    elif user_choice == 'paper' and bot == 'scissors':
        print(username + ' played paper, I played scissors. You lost. Haha, loser!')
    elif user_choice == 'paper' and bot == 'rock':
        print(username + ' played paper, I played rock. You won. Nice!')
    elif user_choice == 'scissors' and bot == 'paper':
        print(username + ' played scissors, I played paper. You won. Nice!')
    elif user_choice == 'scissors' and bot == 'rocks':
        print(username + ' played scissors, I played rocks. You lost. Haha, loser!')
    elif user_choice == bot:
        print("It's a draw, dang it!")


print('Hello, welcome to Rock, Paper, Scissors. Enter your name to get started.')
name = input()

while True:  # do forever, unless `break`ed out of (or an exception occurs)
    choice = input('Rock, Paper or Scissors?').lower().strip()
    game(name, choice)
    if input('Want to play again? Yes or No').lower().strip() == 'no':
        print('Goodbye. Press Enter to exit.')
        input()
        break  # break out of the "while true" loop

Answer 3

第一个问题是，您在收到用户名后没有调用任何函数，我将尝试以下操作（注意，我在代码中添加了一些注释）：

import random
print('Hello, welcome to Rock, Paper, Scissors. Enter your name to get started.')
usn = input()

def game(choice):
  options = ['rock', 'paper', 'scissors']
  bot = random.choice(options)
  if choice == 'rock' and bot == 'scissors':
    print(usn + ' played rock, I played scissors. You won. Nice!')
  elif choice == 'rock' and bot == 'paper':
    print(usn + ' played rock, I played paper. You lost. Haha, loser!')
  elif choice == 'paper' and bot == 'scissors':
    print(usn + ' played paper, I played scissors. You lost. Haha, loser!')
  elif choice == 'paper' and bot == 'rock':
    print(usn + ' played paper, I played rock. You won. Nice!')
  elif choice == 'scissors' and bot == 'paper':
    print(usn + ' played scissors, I played paper. You won. Nice!')
  elif choice == 'scissors' and bot == 'rocks':
    print(usn + ' played scissors, I played rocks. You lost. Haha, loser!')
  elif choice == bot:
    print("It's a draw, dang it!")

# Taking this out of the function, it is going to be called right on the execution
x = 'Yes' 
while True: #here you are doing an loop, that will only end when break is called
    if x == 'Yes':
        game(input('Rock, Paper or Scissors?'))
        x = input('Want to play again? Yes or No')
    else:
        print('Goodbye. Press Enter to exit.')
        input()
        break