岩石，纸，剪刀巨蟒

Question

我正在学习巨蟒，并编写岩石，纸张和剪刀游戏。我能够运行这个程序，但是每次程序经过嵌套的if，elif，else语句时，输出仍然是outer语句，不管humplayer变量的值是什么。有什么帮助吗？

谢谢!

    import random
def main():
    playerName=introduction() 
    humplayer=hum_player()
    compchoice=com_player()
    tieScore = 0
    humScore=0
    comScore=0
    humplayer=input("Enter your move (0 for Rock, 1 for Paper, and 2 for Scissors): ")
    while humplayer != -1:
        compchoice=com_player()
        result= evaluate_Game(humplayer,compchoice,playerName)
        if result==0:
            print("It's a tie!")
            tieScore+=1
        elif result==1:
            comScore+=1
        else:
            humScore+=1
        humplayer=input("Enter your move (0 for Rock, 1 for Paper, and 2 for Scissors): ") 
    print(statistics(playerName,humScore,comScore,tieScore))



def introduction():
    print("Welcome to the game of Rock, Paper, Scissors. You will be playing against the computer.")
    name= input("What is your name? ")
    print("Here are the rules", name+":")
    print(" If a player chooses Rock and the other chooses Scissors, Rock wins.")
    print(" If a player chooses Scissors and the other chooses Paper, Scissors wins.")
    print(" If a player chooses Paper and the other chooses Rock, Paper wins.")
    print(" If both players make the same choice, it's a tie.")
    print(" Enter -1 to quit the game ")
    return name

def hum_player():
          choice = int(input("Enter your move (0 for Rock, 1 for Paper, and 2 for Scissors): "))
          return choice

def com_player():
          random_Num = random.randint(0,2)
          return(random_Num)




def evaluate_Game(humplayer,compchoice,playerName):
    a = "Rock"
    b="Paper"
    c="Scissors"
    if humplayer==0:
       if compchoice==0:
           return 0
       elif compchoice==1:
           print(playerName, "plays ",a," computer plays",b)
           print("Paper covers Rock, Computer wins!")
           return 1
       else:
           print(playerName, "plays",a,"computer plays", c)
           print("Rock crushes Scissors ,", playerName," wins!")
           return 2
    elif humplayer==1:
       if compchoice==0:
           print(name,"plays",b," computer plays", a)
           print("Paper covers Rock.", playerName,"wins!")
           return 2
       elif compchoice==1:
           print(playerName,"plays", b," computer plays" , b)
           print("It's a tie!")
           return 0
       else:
           print(playerName, "plays", b,"computer plays", c)
           print("Scissors cuts Paper. Computer wins!")
           return 1
    else:
        if compchoice==0:
           print(playerName, "plays", c," computer plays", a)
           print("Rock breaks Scissors. Computer wins!")
           return 1 
        elif compchoice==1:
           print(playerName, "plays", c, " computer plays", b)
           print("Scissors cuts Paper." , playerName, "wins!")
           return 2
        else:
            print(playerName, "plays", c," computer plays", c)
            print("It's a tie!")
            return 0

def statistics(playerName,humScore,tieScore,comScore):
    print("There were", tieScore+comScore+humscore, "games:", playerName, "won", humScore, "games, the computer won", comScore, "games and there were", tieScore, "ties.")

main()

Answer 1

当您重新请求来自人类的输入时，您并不是将其转换为int。而不是重写这一行：

humplayer=input("Enter your move (0 for Rock, 1 for Paper, and 2 for Scissors): ") 

你为什么不用你写的函数

humplayer = hum_player()

虽然在您的int函数中正确地转换为hum_player()，但并不是在请求的所有其他地方。你也可以重复使用这个功能。这就是为什么我们首先编写单独的函数(所以我们不必重复我们已经编写的代码)。

第二件事有点不对，就是你使用statistics()方法的方式。

def statistics(playerName,humScore,tieScore,comScore):
    print("There were", tieScore+comScore+humscore, "games:", playerName, "won", humScore, "games, the computer won", comScore, "games and there were", tieScore, "ties.")

正如所写的，这实际上是可以的。问题是你用的是

'print(statistics(...))`

实际的statistics方法返回None，因此这个print语句将打印None (尽管实际的函数调用仍将打印到控制台)。更好的方法是要么直接调用该方法：

statistics(...)

如果没有print语句，或者更改，您将使用统计方法返回字符串，而不是打印字符串。

def statistics(playerName,humScore,tieScore,comScore):
    return ("There were", tieScore+comScore+humscore, "games:", playerName, "won", humScore, "games, the computer won", comScore, "games and there were", tieScore, "ties.")