石头，布，剪刀游戏。编写有效的print语句

Question

下面是我的代码：

from random import*
from myro import*
from math import*

def computerChoice():
   computer = randint(0,2)
   if (computer == 0):
     choice = "rock"
   elif(computer == 1):
     choice = "paper"
   else:
     choice = "scissors"

  return choice

def userGuess():
     print " R = Rock"
     print " P = Paper"
     print " S = Scissors"

     userChoice = raw_input("Enter R, P, or S: ")

     return userChoice

def calculate(userChoice, choice):

    userNameWins = 0
    computerWins = 0
    draws = 0

    if(userChoice == "R" and choice == "paper"):
       speak("scribbler wins")
       computerWins = computerWins + 1
    elif(userChoice== "R" and choice == "scissors"):
       speak( "you win")
        userNameWins = userNameWins + 1
    elif(userChoice== "P" and choice == "rock"):
       speak("you win")
       userNameWins = userNameWins + 1
    elif(userChoice== "P" and choice == "scissors"):
       speak("scribbler wins")
       computerWins = computerWins + 1
    elif(userChoice == "S" and choice == "rock"):
       speak("scribbler wins")
       computerWins = computerWins + 1
    elif(userChoice == "S" and choice == "paper"):
       speak("you win")
       userNameWins = userNameWins + 1
    else:
       speak("Draw")
       draws = draws + 1

    return userNameWins, computerWins, draws

def printResults(userNameWins, computerWins, draws)
    # insert code for print statement

def main():

    for x in range (5):
         speak("Rock Papers Scissors ")
         userChoice = userGuess()
         choice = computerChoice()
         calculate(userChoice,choice)
    printResults (userNameWins, computerWins, draws) 

当我尝试定义一些变量时，我得到了一个错误，我不知道为什么。我需要一个函数来正确打印calculate()返回的结果

Answer 1

你所要求的部分是微不足道的。由于您没有给我们提供所需的输出格式，我将对其进行猜测，希望您可以将其修复为与您希望的方式相匹配：

def printResults(userNameWins, computerWins, draws)
    print('user won {} times, computer won {} times, and players drew {} times'
          .format(userNameWins, computerWins, draws))

然而，您的代码将无法工作，至少有两个原因。

首先，您将其称为：

calculate(userChoice,choice)

…它返回你想要的3个值，但是你永远不会把它们存储在任何地方。特别是，您不会将它们或其他任何内容存储在名为userNameWins、computerWins和draws的变量中。所以，这样就会得到一个NameError

printResults (userNameWins, computerWins, draws) 

其次，您在一个函数上循环了5次，每次都返回一组完整的值，但是您只调用了printResults一次，而不是5次。我不确定您在这里的意图是什么，但最有可能的是，您需要将printResults移到循环中，或者需要添加代码来汇总所有循环的结果。

Answer 2

很抱歉让你久等了，但希望这个解决方案能对你有所帮助。

from random import randint
#from myro import *
choice = None
userChoice = None
userNameWins = 0
computerWins = 0
draws = 0

def computerChoice():
   global choice
   computer = randint(0,2)
   if (computer == 0):
     choice = "rock"
   elif(computer == 1):
     choice = "paper"
   else:
     choice = "scissors"
   print "Scribbler selected " + choice
   return choice

def userGuess():
     global userChoice
     print " R = Rock"
     print " P = Paper"
     print " S = Scissors"

     userChoice = raw_input("Enter R, P, or S: ")

     return userChoice

def calculate(userChoice, choice):
    global userNameWins
    global computerWins
    global draws
    if(userChoice == "R" and choice == "paper"):
       print("scribbler wins")
       computerWins = computerWins + 1
    elif(userChoice== "R" and choice == "scissors"):
       print( "you win")
       userNameWins = userNameWins + 1
    elif(userChoice== "P" and choice == "rock"):
       print("you win")
       userNameWins = userNameWins + 1
    elif(userChoice== "P" and choice == "scissors"):
       print("scribbler wins")
       computerWins = computerWins + 1
    elif(userChoice == "S" and choice == "rock"):
       print("scribbler wins")
       computerWins = computerWins + 1
    elif(userChoice == "S" and choice == "paper"):
       print("you win")
       userNameWins = userNameWins + 1
    else:
       print("Draw")
       draws = draws + 1

def printResults():
    print "You won " + str(userNameWins) + " times"
    print "Scribbler won " + str(computerWins) + " times"
    print "There were " + str(draws) + " draws"
    if (userNameWins > computerWins):
       print "You win overall"
    elif (userNameWins < computerWins):
       print "Scribbler wins overall"
    else:
       print "It was a dead heat"

def main():
    global userChoice
    global choice
    for x in range (5):
         print ("Rock Papers Scissors ")
         userChoice = userGuess()
         choice = computerChoice()
         calculate(userChoice,choice)
    printResults ()
main()

我没有安装myro，所以我使用print来显示结果。之前，你没有在任何地方保存结果的变量，所以我创建了一个全局变量，这样它就可以存储变量了。此外，我还完成了printResults函数。