Tkinter - Checkbuttons

This tutorial will be about Tkinter Checkbuttons. First, make sure that you can run this code, and than we will explain it:

from tkinter import *
import tkinter.messagebox as mb
import os

top_win = Tk()
top_win.geometry("800x800")

gen_lab  = Label(top_win, text = "Engine Boost")
gen_lab.grid(row = 0, column = 0)

turbo_10 = IntVar()
turbo_20 = IntVar()

ch_10 = Checkbutton(top_win, text = "Boost +10", variable = turbo_10)
ch_10.grid(row = 1, column = 0)

ch_20 = Checkbutton(top_win, text = "Boost +20", variable = turbo_20)
ch_20.grid(row = 2, column = 0)

but_1 = Button(top_win, text = "Activate Boost")
but_1.grid(row = 3, column = 0)
top_win.mainloop()

Just as with Listbox Widget, we will need Labels for Checkbuttons:

gen_lab  = Label(top_win, text = "Engine Boost")
gen_lab.grid(row = 0, column = 0)

And than we will need 2 variables that will be used to hold values:

turbo_10 = IntVar()
turbo_20 = IntVar()

Now we need 2 Checkbuttons. Please note variable = that is connected to corresponding variables. Checkbuttons, as other Tkinter widgets must be positioned. In this case with grid option: 

ch_10 = Checkbutton(top_win, text = "Boost +10", variable = turbo_10)
ch_10.grid(row = 1, column = 0)

ch_20 = Checkbutton(top_win, text = "Boost +20", variable = turbo_20)
ch_20.grid(row = 2, column = 0)

And of course, submit button: 

but_1 = Button(top_win, text = "Activate Boost")
but_1.grid(row = 3, column = 0)

So far, so good.

Custom functions for Tkinter Checkbuttons

Make sure that you can run this code, and then we will explain it. You will see results in Python Shell:

from tkinter import *
import tkinter.messagebox as mb
import os

top_win = Tk()
top_win.geometry("800x800")

def activate_boost():
    status_10 = turbo_10.get()
    status_20 = turbo_20.get()

    if status_10 == 1:
        print("Boost +10 Activated")
    if status_20 == 1:
        print("Boost +20 Activated")
    if status_10 == 1 and status_20 == 1:
        print("!" * 50)
        print("ALERT - DANGER")
        print("Lower Down Boost Levels - Just One Checkbutton")
    if status_10 == 0 and status_20 == 0:
        print("Normal Operation")

gen_lab  = Label(top_win, text = "Engine Boost")
gen_lab.grid(row = 0, column = 0)

turbo_10 = IntVar()
turbo_20 = IntVar()

ch_10 = Checkbutton(top_win, text = "Boost +10", variable = turbo_10)
ch_10.grid(row = 1, column = 0)

ch_20 = Checkbutton(top_win, text = "Boost +20", variable = turbo_20)
ch_20.grid(row = 2, column = 0)

but_1 = Button(top_win, text = "Activate Boost", command = activate_boost)
but_1.grid(row = 3, column = 0)
top_win.mainloop()

This is our custom function that will process what is checked:

def activate_boost():
    status_10 = turbo_10.get()
    status_20 = turbo_20.get()

    if status_10 == 1:
        print("Boost +10 Activated")
    if status_20 == 1:
        print("Boost +20 Activated")
    if status_10 == 1 and status_20 == 1:
        print("!" * 50)
        print("ALERT - DANGER")
        print("Lower Down Boost Levels - Just One Checkbutton")
    if status_10 == 0 and status_20 == 0:
        print("Normal Operation")

With status_10 and status_20 we will get choice. Then we are checking if only one status is set to 1, and printing appropriate text.

If both of statuses are 1, than we print a message: "Lower Down Boost Levels - Just One Checkbutton".

If both statuses are 0, which means they are not operational, than some imaginary machine is working in a normal mode, no any boost, and we are printing "Normal operation".

You are strongly advised to check corresponding YT tutorial on Checkbuttons.