如何在python中的主函数中运行函数？

Question

请帮助我完成编程任务的代码。我试图运行RollDice（）函数，CheckForLaddders（）函数& CheckForSnakes（）函数在我的main（）函数中运行主游戏。我已经定义了所有的全局变量，如currentPosition1，currentPosition2，ladderList，snakesList & nameList等

当我运行我的代码时，它说RollDice（）没有被定义 - 这是我在main中调用的初始函数。所以基本上，我如何在代码的上下文中调用这些函数？我认为将上述所有4个函数放在一个类（gameOn）中意味着它们可以互相访问，实质上就变成了方法。但我想我只是没有正确执行。

我知道我的逻辑是正确的，但我只是一个Python /编码新手..请帮助！

类gameOn：

def RollDice(): 
    if nameList.index(player) == 0: 
     diceRollValue = randrange(1,7,1) 
     currentPosition1 += diceRollValue 
     print (player, " dice is: ", diceRollValue, ", New position is: ", currentPosition1) 
     if nameList.index(player) == 1: 
      diceRollValue = randrange(1,7,1) 
      currentPosition2 += diceRollValue 
      print (player, " dice is: ", diceRollValue, ", New position is: ", currentPosition2) 

def CheckForLadder(): 
    if nameList.index(player) == 0: 
     if currentPosition1 in ladderList: 
      currentPosition1 += 15 
      print ("Great ", player, " ! It's a ladder, Climb up by 15 cells. Your new position is: ", currentPosition1) 
    if nameList.index(player)== 1: 
     if currentPosition2 in LadderList: 
      currentPosition2 += 15 
      print ("Great ", player, " ! It's a ladder, Climb up by 15 cells. Your new position is: ", currentPosition2) 


def CheckForSnake(): 
    if nameList.index(player)== 0: 
     if currentPosition1 in snakesList: 
      currentPosition1 = currentPosition1 - 10 
      print ("Oops! ", player, " ! You've been bitten, go down 10 cells. Your new position is: ", currentPosition1) 
    if nameList.index(player)== 1: 
     if currentPosition2 in snakesList: 
      currentPosition2 = currentPosition2 - 10 
      print ("Oops! ", player, " ! You've been bitten, go down 10 cells. Your new position is: ", currentPosition2) 


def main(): 
     while (currentPosition1 == 0 and currentPosition2 == 0): 
      for player in nameList: 
       RollDice()# How do I run this function which I've created above? 
      print("\n") 
     while (currentPosition1 <= 105 or currentPosition2 <= 105): 
      for player in nameList: 
       RollDice()# How do I run this function which I've created above? 
       CheckForLadder()# How do I run this function which I've created above? 
       CheckForSnake()# How do I run this function which I've created above? 
      print("\n") 

      if currentPosition1 >= 100: 
       print ("\n") 
       print ("Huuuuray! Winner is ", player1) 
       print ("Press any key to exit") 
       break 

      if currentPosition2 >= 100: 
       print ("\n") 
       print ("Huuuuray! Winner is ", player2) 
       print ("Press any key to exit") 
       break 
main() 

Answer 1

如果你创建了一个类，你必须先添加self参数，就像这样：

class GameOn(): 

    def RollDice(self): 
    ... 

    def CheckForLadder(self): 
    ... 

    def CheckForSnake(self): 
    ... 


    def main(self): 
     while (currentPosition1 == 0 and currentPosition2 == 0): 
      for player in nameList: 
       self.RollDice() 
      print("\n") 

     while (currentPosition1 <= 105 or currentPosition2 <= 105): 
      for player in nameList: 
       self.RollDice() 
       self.CheckForLadder() 
       self.CheckForSnake() 
      print("\n") 

      if currentPosition1 >= 100: 
       print ("\n") 
       print ("Huuuuray! Winner is ", player1) 
       print ("Press any key to exit")#finish this 
       break 

      if currentPosition2 >= 100: 
       print ("\n") 
       print ("Huuuuray! Winner is ", player2) 
       print ("Press any key to exit")#finish this 
       break 

game = GameOn() 
game.main()