如何使仅选定的单选按钮值更改tkin

Question

我有四个单选按钮和四个值。我希望这样，当一个选中的单选按钮被选中时，该值将从在输入框中输入的值发生变化，但只针对选定的单选按钮，而其余的则保持不变。在

当前在我的代码中，所有值都会更改为在输入框中输入的值。在

from tkinter import*

class NumberValues:
    def __init__(self, value):
        self.value = value

class NumberGUI:
    def __init__(self, parent):

        self.numbers = [NumberValues(4000), NumberValues(4000), NumberValues(8000), NumberValues(8000)]

        i_value = 0 #value given to radiobutton

        #set up for show radio buttons
        self.numChoice = IntVar() #instance for IntVar created
        self.numChoice.set(0) #sets the initial selection

        self.NumberList = []

        for num in self.numbers: #for loop outputs show info
            self.show_rb = Radiobutton(parent, variable = self.numChoice, value = i_value)
            self.show_rb.grid(row = i_value, column = 0)

            self.num_label = Label(parent, text = int(num.value))
            self.num_label.grid(row = i_value, column = 1)

            self.NumberList.append(self.num_label)

            i_value += 1

        self.quantity_entry = Entry(parent, width = 15)
        self.quantity_entry.grid(row = i_value + 1, column = 0)

        self.confirmOrder_btn = Button(parent, text = "Enter Number", command = self.calculate_num) 
        self.confirmOrder_btn.grid(row = i_value + 1, column = 1)


    def calculate_num(self):

        showNumberList = []

        placement = int(self.numChoice.get())

        for i in range(len(self.numbers)):
            number = int(self.quantity_entry.get())
            self.numbers[i].value = self.numbers[i].value - number
            avaiable = int(self.numbers[i].value)
            showNumberList.append(avaiable)
            self.NumberList[i].configure(text = showNumberList[i])

# main routine
if __name__ == "__main__":
    root = Tk()
    numberCaluclating = NumberGUI(root)
    root.mainloop()

如图所示，我已经创建了一个placement变量，它指示应该在列表中更改的值的位置。我想以某种方式使用它，但我所尝试的仍然将它们全部更改为不正确的值。在

在这里不需要列表，我只是认为这是一种将所有值保持在一起并一起配置它们的可能方法。在

那么，我如何使它，当一个选定的单选按钮被选中时，只有该值改变，而其他值在它们的单选按钮被选中时发生变化？在

Answer 1

你似乎在问如何只设置一个值而不是所有值。除非我误解了这个问题，否则你需要做的就是移除循环。在

例如：

def calculate_num(self):

    index = int(self.numChoice.get())
    number = int(self.quantity_entry.get())
    new_value = self.numbers[index].value - number
    self.numbers[index].value = new_value
    self.NumberList[index].configure(text=new_value)

Answer 2

请看一看-我删除了一些逻辑，但GUI会根据需要进行更新：

from tkinter import*

class NumberValues:
    def __init__(self, value):
        self.value = value

class NumberGUI:
    def __init__(self, parent):

        self.numbers = [NumberValues(4000), NumberValues(4000), NumberValues(8000), NumberValues(8000)]

        i_value = 0 #value given to radiobutton

        #set up for show radio buttons
        self.numChoice = IntVar() #instance for IntVar created
        self.numChoice.set(0) #sets the initial selection

        self.NumberList = []

        self.link = [] ###

        for num in self.numbers: #for loop outputs show info
            self.show_rb = Radiobutton(parent, variable = self.numChoice, value = i_value)
            self.show_rb.grid(row = i_value, column = 0)

            self.num_label = Label(parent, text = int(num.value))
            self.num_label.grid(row = i_value, column = 1)

            self.NumberList.append(self.num_label)

            self.link.append( (self.show_rb, self.num_label) ) ###

            i_value += 1

        self.quantity_entry = Entry(parent, width = 15)
        self.quantity_entry.grid(row = i_value + 1, column = 0)

        self.confirmOrder_btn = Button(parent, text = "Enter Number", command = self.calculate_num)
        self.confirmOrder_btn.grid(row = i_value + 1, column = 1)


    def calculate_num(self):
        placement = int(self.numChoice.get())
        ###
        self.link[placement][1].configure(text = int(self.quantity_entry.get()) )

# main routine
if __name__ == "__main__":
    root = Tk()
    numberCaluclating = NumberGUI(root)
    root.mainloop()