Question

我之前没有成功回答过这个问题，所以我会再试一次。

下面是（应该）按下时更改按钮背景颜色的代码。它基本上采用数字'eleNum'，然后使用它打印出4到40个按钮，范围从0到40.

这是奇怪的一点。面板编号4按预期工作，但其余部分只是给我一个错误。例如，如果我按下面板2中的按钮：

line 113, in chooser
   self.Buttons2[index].onfigure(bg="orange")
AttributreError: 'int' object has no attribute 'configure'

这是我的代码。

def floorChooserButtons( self, eleNum, floors, yStart, yEnd, xStart, xEnd):
    self.Buttons1 = [i for i in range(41)]
    self.Buttons2 = [i for i in range(41)]
    self.Buttons3 = [i for i in range(41)]
    self.Buttons4 = [i for i in range(41)]
    self.eleNumber = [i for i in range(4)]
    if(eleNum is 1):
        self.eleNumber[0] = tk.Label(self, width = 12, text="Elevator 1")
        self.eleNumber[0].grid(row = xStart-1, column =yStart+1, columnspan=3)
        xPos = xStart
        yPos = yStart 
        for floor in floors:
            if(yPos == yEnd):
                xPos = xPos + 1
                yPos = yStart
            if(xPos == xEnd-1):
                yPos = yStart+2
            self.Buttons1[floor] = tk.Button(self, width=3, text=floor, 
                command = lambda f=floor: self.chooser(f, eleNum))
            self.Buttons1[floor].grid(row=xPos, column =yPos)
            yPos = yPos + 1
    elif(eleNum is 2):
        self.eleNumber[1] = tk.Label(self, width = 12, text="Elevator 2")
        self.eleNumber[1].grid(row = xStart-1, column =yStart+1, columnspan=3)
        xPos = xStart
        yPos = yStart
        for floor in floors:
            if(yPos == yEnd):
                xPos = xPos + 1
                yPos = yStart
            if(xPos == xEnd-1):
                yPos = yStart+2
            self.Buttons2[floor] = tk.Button(self, width=3, text=floor, 
                command = lambda f=floor: self.chooser(f, eleNum))
            self.Buttons2[floor].grid(row=xPos, column =yPos)
            yPos = yPos + 1
    elif(eleNum is 3):
        self.eleNumber[2] = tk.Label(self, width = 12, text="Elevator 3")
        self.eleNumber[2].grid(row = xStart-1, column =yStart+1, columnspan=3)
        xPos = xStart
        yPos = yStart
        for floor in floors:
            if(yPos == yEnd):
                xPos = xPos + 1
                yPos = yStart
            if(xPos == xEnd-1):
                yPos = yStart+2
            self.Buttons3[floor] = tk.Button(self, width=3, text=floor, 
                command = lambda f=floor: self.chooser(f, eleNum))
            self.Buttons3[floor].grid(row=xPos, column =yPos)
            yPos = yPos + 1
    elif(eleNum is 4):
        self.eleNumber[3] = tk.Label(self, width = 12, text="Elevator 4")
        self.eleNumber[3].grid(row = xStart-1, column =yStart+1, columnspan=3)
        xPos = xStart
        yPos = yStart
        for floor in floors:
            if(yPos == yEnd):
                xPos = xPos + 1
                yPos = yStart
            if(xPos == xEnd-1):
                yPos = yStart+2
            self.Buttons4[floor] = tk.Button(self, width=3, text=floor, 
                command = lambda f=floor: self.chooser(f, eleNum))
            self.Buttons4[floor].grid(row=xPos, column =yPos)
            yPos = yPos + 1
        self.QUIT = tk.Button(self, text="QUIT", fg="red",
            command=root.destroy).grid(row = xPos, column = yPos)


def chooser(self, index, eleNum):
    print("Number", index, "pressed in elevator", eleNum)
    if eleNum is 1:
        self.Buttons1[index].configure(bg="blue")
    if eleNum is 2:
        self.Buttons2[index].configure(bg="orange")
    if eleNum is 3:
        self.Buttons3[index].configure(bg="pink")
    if eleNum is 4:
        self.Buttons4[index].configure(bg="red")

Answer 1

您的列表中有整数。你自己把它们放在那里，例如：self.Buttons2 = [i for i in range(41)]。在此之后，您只将其中一些更改为按钮，例如：self.Buttons2[floor] = tk.Button( ...。

然后尝试在整数上调用configure方法 - 错误消息直接解释了这一点。显然整数没有configure方法。

因此，您的代码始终只适用于一个面板。在给定floorChooserButtons的情况下调用eleNum后，所有列表都将重置为整数，只有与eleNum对应的列表正在填充按钮（仍然只对{{1}内的索引填充列表）。

快速解决方法是移动部件：

floors

到构造函数。然后，在为所有面板调用self.Buttons1 = [i for i in range(41)] self.Buttons2 = [i for i in range(41)] self.Buttons3 = [i for i in range(41)] self.Buttons4 = [i for i in range(41)]之后，您将使用实际按钮填充它们，而不是数字。你的整个结构对我来说仍然没有意义（为什么你会在列表中有整数，意图在它们中存储按钮？）。

作为旁注，您错误地使用了floorChooserButtons运算符。它在意外工作，因为Python中的整数是不可变的，但它不是很可读。对于价值平等测试，您应该使用is运算符。

tkinter按钮的颜色更改会产生令人困惑的输出

1 个答案: