Tkinter 单选按钮未正确选择

Question

我正在尝试制作一个小型 tkinter 程序来计算形状和体积的面积 我制作了一个主 py 文件“area_volume_calculator.py”和两个库“area.py”和“volume.py”

主程序的单选按钮工作正常，但是当我从Area_calculator 创建第二个窗口时，我似乎无法让单选按钮正常工作。当它打开时，最后 2 个单选按钮已被选中。

我仍然可以选择一个选项，但 self.choice.get() 总是返回默认值 -1，我不知道如何让它工作。

谁能帮我让单选按钮正常工作？ 任何和所有的帮助表示赞赏

主程序：

from tkinter import *

from area import *

# from volume import *

class Menu:
    def __init__(self):
        self.window = Tk()
        self.window.title("Areas and Volumes")
    
    
        # self.name_label = Label(self.window, text = "Name: ")
        # self.name_label.grid(row=0,column=0)
    
        # self.name_entry = Entry(self.window)
        # self.name_entry.grid(row=0,column=1)
    
        # self.age_label = Label(self.window, text = "Age: ")
        # self.age_label.grid(row=1,column=0)
    
        # self.age_entry = Entry(self.window)
        # self.age_entry.grid(row=1,column=1)
    
        self.choice = IntVar()
    
        self.area_radiobutton = Radiobutton(self.window, text = "Area Calculator", var = self.choice, value = 0)
        self.area_radiobutton.grid(row=2,column=0)
    
        self.volume_radiobutton = Radiobutton(self.window, text = "Volume Calculator", var = self.choice, value = 1)
        self.volume_radiobutton.grid(row=3,column=0)
    
        self.choice.set(-1)
    
        self.submit_button = Button(self.window, text = "Submit", command = self.submit)
        self.submit_button.grid(row=4,column=0)
    
        print(self.choice.get())
    
        self.window.mainloop()
    
    def submit(self):
        print(self.choice.get())

        if self.choice.get() == 0:
            area_calculator = Area_calculator()
    
        # elif self.choice.get() == 1:
        #     volume_calculator = Volume_calculator()


menu = Menu()

area.py 库：

from tkinter import *
class Area_calculator():
    def __init__(self):
        self.window = Tk()
        self.window.title
        self.window.title("Area Calculator")
    
        self.choice_label = Label(self.window, text = "Choose a shape")
        self.choice_label.grid(row=0,columnspan=1)
    
        self.choice = IntVar()
    
        self.rectangle_radiobutton = Radiobutton(self.window, text = "Rectangle", var = self.choice, value = 0)
        self.rectangle_radiobutton.grid(row=1,column=0)
    
        self.triangle_radiobutton = Radiobutton(self.window, text = "Triangle", var = self.choice, value = 1)
        self.triangle_radiobutton.grid(row=2,column=0)
    
        self.circle_radiobutton = Radiobutton(self.window, text = "Circle", var = self.choice, value = 2)
        self.circle_radiobutton.grid(row=3,column=0)
    
        self.submit_button = Button(self.window, text = "Submit", command = self.submit)
        self.submit_button.grid(row=4,column=0)
    
        self.choice.set(-1)
        print(self.choice.get())
    
        self.window.mainloop()
    
    def submit(self):
        print(self.choice.get())
#        if self.choice.get() == 0:
#            rectangle_calculator = Rectangle_calculator()
#        elif self.choice.get() == 1:
#            triangle_calculator = Triangle_calculator()
#        elif self.choice.get() == 2:
#            circle_calculator = Circle_calculator()

Answer 1

您正在创建tk.Tk() 的两个实例（每个类中一个），这绝不是一个好主意。 tk.Tk() 不仅创建了一个新窗口，而且还创建了一个新的嵌入式 Tcl 解释器，这可能会搞砸事情，尤其是 IntVars 和其他变量，例如 self.choice。如需更多信息，请参阅here。

如果您想拥有多个窗口，请改用tk.Toplevel()。

在cmets中回答你的第二个问题，你必须首先将参数name和age添加到Area_calculator类的__init__中，并且在@中创建它时也将它们传递给类987654331@.

完成的代码：

主程序：

from tkinter import *

from area import *


class Menu:
    def __init__(self):
        self.window = Tk()
        self.window.title("Areas and Volumes")
    
        self.name_label = Label(self.window, text = "Name: ")
        self.name_label.grid(row=0,column=0)
    
        self.name_entry = Entry(self.window)
        self.name_entry.grid(row=0,column=1)
    
        self.age_label = Label(self.window, text = "Age: ")
        self.age_label.grid(row=1,column=0)
    
        self.age_entry = Entry(self.window)
        self.age_entry.grid(row=1,column=1)
    
        self.choice = IntVar()
    
        self.area_radiobutton = Radiobutton(self.window, text = "Area Calculator", var = self.choice, value = 0)
        self.area_radiobutton.grid(row=2,column=0)
    
        self.volume_radiobutton = Radiobutton(self.window, text = "Volume Calculator", var = self.choice, value = 1)
        self.volume_radiobutton.grid(row=3,column=0)
    
        self.choice.set(-1)
    
        self.submit_button = Button(self.window, text = "Submit", command = self.submit)
        self.submit_button.grid(row=4,column=0)
    
        print(self.choice.get())
    
        self.window.mainloop()
    
    def submit(self):
        print(self.choice.get())

        if self.choice.get() == 0:
            name = self.name_entry.get()
            age = self.age_entry.get()
            area_calculator = Area_calculator(name, age)


menu = Menu()

area.py 库：

from tkinter import *


class Area_calculator():
    def __init__(self, name, age):
        self.window = Toplevel()
        self.window.title
        self.window.title("Area Calculator")

        self.name_label = Label(self.window, text = f"{name=}", width=10)
        self.name_label.grid()

        self.age_label = Label(self.window, text = f"{age=}", width=10)
        self.age_label.grid(row=0, column=1)
    
        self.choice_label = Label(self.window, text = "Choose a shape")
        self.choice_label.grid(row=1,columnspan=1)
    
        self.choice = IntVar()
    
        self.rectangle_radiobutton = Radiobutton(self.window, text = "Rectangle", var = self.choice, value = 0)
        self.rectangle_radiobutton.grid(row=2,column=0)
    
        self.triangle_radiobutton = Radiobutton(self.window, text = "Triangle", var = self.choice, value = 1)
        self.triangle_radiobutton.grid(row=3,column=0)
    
        self.circle_radiobutton = Radiobutton(self.window, text = "Circle", var = self.choice, value = 2)
        self.circle_radiobutton.grid(row=4,column=0)
    
        self.submit_button = Button(self.window, text = "Submit", command = self.submit)
        self.submit_button.grid(row=5,column=0)
    
        self.choice.set(-1)
        print(self.choice.get())
    
        self.window.mainloop()
    
    def submit(self):
        print(self.choice.get())