Checkbutton Status Checking Python Tkinter

Question

Hi im trying to write a piece of code on python that lists a value in a label depending how many checkbuttons are ticked. why isnt my code working?

var1=IntVar()
var2=IntVar()
var3=IntVar()



inlabel = StringVar()


label =  Label (the_window, height = 1,bg = "white",width = 30, textvariable = inlabel,font = ("arial",50,"normal")).pack()
def check():
    if(var1 == 0 and var2 == 0 and var3==1):
        inlabel.set("odd")
    if(var1 == 0 and var2 == 1 and var3==1):
        inlabel.set("even")
    if(var1 == 1 and var2 == 1 and var3==1):
        inlabel.set("odd")
    if(var1 == 0 and var2 == 1 and var3==0):
        inlabel.set("odd")
    if(var1 == 1 and var2 == 1 and var3==0):
        inlabel.set("even")
    if(var1 == 0 and var2 == 0 and var3==0):
        inlabel.set("null")
    if(var1 == 1 and var2 == 0 and var3==0):
        inlabel.set("odd")
    if(var1 == 1 and var2 == 0 and var3==1):
        inlabel.set("even")

check1 = Checkbutton(the_window, text= "Gamma",variable=var1,command=check)
check2 = Checkbutton(the_window, text= "Beta",variable=var2,command=check)
check3 = Checkbutton(the_window, text= "Alpha",variable=var3,command=check)
check1.pack(side=RIGHT)
check2.pack()
check3.pack(side=LEFT)

Thanks :)

Presumably you are using tkinter? If so, it would mentioning that in the question title and tags (otherwise it's not clear where Checkbutton etc are defined) — dbr
– dbr, Commented May 4, 2014 at 6:12
possible duplicate of stackoverflow.com/questions/23425467/… — Lafexlos
– Lafexlos, Commented May 4, 2014 at 7:36

Lafexlos · Accepted Answer · 2014-05-04 07:39:48Z

2

You need to use get and assign it to another variable instead of var1. So something like this should work.

value1 = var1.get()
value2 = var2.get()
value3 = var3.get()

I assumed you defined your parent window (the_window) in your actual program.

answered May 4, 2014 at 7:39

Lafexlos

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1 Comment

Chivkins Over a year ago

Thanks and yes I did define the_window earlier :)

Music Champ29 · Accepted Answer · 2014-05-04 08:12:11Z

2

You need to use the var.get(). Here's a working example in Python3.3.

from tkinter import *

root=Tk()

class CheckB():
    def __init__(self, master, text):
        self.var = IntVar()
        self.text=text
        c = Checkbutton(
            master, text=text,
            variable=self.var,
            command=self.check)
        c.pack()

    def check(self):
        print (self.text, "is", self.var.get())


check1 = CheckB(root, text="Gamma")
check2 = CheckB(root, text="Beta")
check3 = CheckB(root, text="Alpha")

Hope that helped! - Ed

answered May 4, 2014 at 8:12

Music Champ29

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