单选按钮变量未更改Python（TKinter）中的值

Question

我正在为大学从事一项活动，并且坚持另一个问题。 我在网上狩猎，但是没有地方告诉我我做错了什么。 我们必须创建12个盒子，将其分为3列，每4列设置一次，每列下方都有一个单选按钮。选择单选按钮后，盒子的颜色将发生变化。 未选中单选按钮时，它们应恢复为原始颜色。

在添加了我的if语句以确定单选按钮的变量值是什么之后，什么都没有发生。

这是我的代码：

# Import the Tkinter functions
from Tkinter import *

# Create a window
the_window = Tk()
the_window.geometry('460x200')

# Give the window a title
the_window.title('Show Columns')

#Declare Radio Variable
radio_var = IntVar(value=0)

#Change first set colour
def change_first_set_colour():

    #Determine colour to display
    if radio_var == 1:
        label1.configure(bg="blue")
        label2.configure(bg="blue")
        label3.configure(bg="blue")
        label4.configure(bg="blue")
    else:
        label1.configure(bg="grey")
        label2.configure(bg="grey")
        label3.configure(bg="grey")
        label4.configure(bg="grey")

#Change first set colour
def change_second_set_colour():

    #Determine colour to display
    if radio_var == 2:
        label1.configure(bg="blue")
        label2.configure(bg="blue")
        label3.configure(bg="blue")
        label4.configure(bg="blue")
    else:
        label1.configure(bg="grey")
        label2.configure(bg="grey")
        label3.configure(bg="grey")
        label4.configure(bg="grey")

#Change first set colour
def change_third_set_colour():

    #Determine colour to display
    if radio_var == 3:
        label1.configure(bg="blue")
        label2.configure(bg="blue")
        label3.configure(bg="blue")
        label4.configure(bg="blue")
    else:
        label1.configure(bg="grey")
        label2.configure(bg="grey")
        label3.configure(bg="grey")
        label4.configure(bg="grey")

#Create label1
label1 = Label(the_window, bg="grey", fg="black", width=20, height=2)
label1.place(x=5, y=5)

#Create label2
label2 = Label(the_window, bg="grey", fg="black", width=20, height=2)
label2.place(x=5, y=45)

#Create label3
label3 = Label(the_window, bg="grey", fg="black", width=20, height=2)
label3.place(x=5, y=85)

#Create label4
label4 = Label(the_window, bg="grey", fg="black", width=20, height=2)
label4.place(x=5, y=125)

#Create Radio Button 1
Radio_1 = Radiobutton(the_window,
                      text="First",
                      variable=radio_var,
                      command=change_first_set_colour,
                      value=1)
Radio_1.place(x=50, y=165)

#Create label5
label5 = Label(the_window, bg="grey", fg="black", width=20, height=2)
label5.place(x=155, y=5)

#Create label6
label6 = Label(the_window, bg="grey", fg="black", width=20, height=2)
label6.place(x=155, y=45)

#Create label7
label7 = Label(the_window, bg="grey", fg="black", width=20, height=2)
label7.place(x=155, y=85)

#Create label8
label8 = Label(the_window, bg="grey", fg="black", width=20, height=2)
label8.place(x=155, y=125)

#Create Radio Button 2
Radio_2 = Radiobutton(the_window,
                      text="Second",
                      variable=radio_var,
                      command=change_second_set_colour,
                      value=2)
Radio_2.place(x=180, y=165)

#Create label9
label9 = Label(the_window, bg="grey", fg="black", width=20, height=2)
label9.place(x=305, y=5)

#Create label10
label10 = Label(the_window, bg="grey", fg="black", width=20, height=2)
label10.place(x=305, y=45)

#Create label11
label11 = Label(the_window, bg="grey", fg="black", width=20, height=2)
label11.place(x=305, y=85)

#Create label12
label12 = Label(the_window, bg="grey", fg="black", width=20, height=2)
label12.place(x=305, y=125)

Radio_3 = Radiobutton(the_window,
                      text="Third",
                      variable=radio_var,
                      command=change_third_set_colour,
                      value=3)
Radio_3.place(x=345, y=165)

#----------------------------------------------------------------

# Start the event loop to react to user inputs
the_window.mainloop()

任何帮助将非常感激！ 谢谢

Answer 1

radio_var是一个对象。 您需要使用radio_var.get()才能正确检索值。