TypeError:' list'尝试从字典中调用对象时,对象不可调用

时间:2014-10-27 13:14:10

标签: python dictionary typeerror

我正在尝试为学校作业编写国际象棋的实施,但我遇到了一个似乎无法修复的问题。

def askpiece(self,player):
    inputstring=input(player.name+ ", what is the location of the piece you would like to move (e.g.)? ")
    x,y=inputstring
    y=int(y)
    if (x,y) in self and self[(x,y)].name[1] == player.tag:
        if self[(x,y)].canmove(self,player):
            return (x,y)
        else:
            print("the selected piece currently can't move, try again.")
    elif self[(x,y)].name[1] != player.tag:
        print("the piece you are trying to move belongs to the other player, try again.")
        self.askpiece(player)
    elif (x,y) not in self:
        print("there is currently no piece on the specified location, try again.")

def canmove(self,board,player):  #controls if the piece can move in atleast one way 

                                 #included the function canmove too in case that is what is causing the error
    lettertonumber={"a":1,"b":2,"c":3,"d":4}
    numbertoletter={1:"a",2:"b",3:"c",4:"d"}
    for move in self.canmove:
        if lettertonumber[self.x]+move[0] in [1,4] and self.y+move[1] in [1,5]:
            if (lettertonumber[self.x]+move[0],self.y+move[1]) in board:
                if self.name[1] != player.tag:
                    return True
            else:
                return True
    return False

当我打电话给这个功能时,该功能正确地询问了我想要移动的棋子的位置(例如b1上的车),检查该棋子是否存在以及该棋子是否属于我,但是生成TypeError:

File "Schaak.py", line 31, in <module>
   game()
File "Schaak.py", line 27, in game
   (x,y)=askpiece(bord,player)
File "Schaak.py", line 9, in askpiece
   if board[(x,y)].canmove(board,player) == True:

TypeError: 'list' object is not callable

在askpiece中,self是一个名为“board”的词典,self [(x,y)]是字典中的一个棋子,当我要求代码打印自[(x,y)]时,它正确地说明了对象是“class:Rook”,如果我要求它打印对象本身,输出也是正确的。无论我如何更改语法,我似乎得到这个错误(除非我将其更改为生成不同错误的东西),在其余的代码中,当我调用self [(x,y)]时,我不会得到任何错误

2 个答案:

答案 0 :(得分:1)

canmove()

中的这一行
for move in self.canmove:

表示您在某个时刻将此属性设置为列表。方法和实例变量存在于同一名称空间中(实际上,方法只不过是一个恰好可调用的[class]变量),因此您不能重用相同的名称。一个名字或另一个名字必须改变;由于列表变量似乎更有可能只在内部使用,我建议将其更改为_canmove,除非有更合适的名称可供使用。

答案 1 :(得分:0)

代码canmove中的某个位置已分配给list,因此当您尝试canmove(board,player)时会收到错误消息:

In [26]: canmove = []

In [27]: canmove = []

In [28]: canmove()
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-28-2a6706ff3740> in <module>()
----> 1 canmove()

TypeError: 'list' object is not callable