An improvement on a common tkinter 'Checkbar', allowing the setting of values after instancing.

ImprovedCheckbar.py

"""
An improvement on the tkinter Checkbar example,
available from http://www.python-course.eu/tkinter_checkboxes.php
Author: Matt Woodhead
"""

import tkinter as tk
from tkinter import ttk


class Checkbar(ttk.Frame):
    """
    Creates the checkbar class, which defines a set of checkboxes using a list.
    Can both return and set the states of individual checkboxes
    """
    def __init__(self, parent=None, picks=[], side=tk.LEFT, anchor=tk.W):
        ttk.Frame.__init__(self, parent)
        self.vars = {}
        for pick in picks:
            var = tk.IntVar()
            chk = ttk.Checkbutton(self, text=pick, variable=var)
            chk.pack(side=side, anchor=anchor, expand=1)
            chk.invoke()
            self.vars[pick] = var  # Add the pick to the dictionary

    def getvar(self):
        """ returns the checkbox values """
        return [var.get() for picks, var in self.vars.items()]

    def setvar(self, pick, value):
        """ sets the value for a specific checkbox in the checkbar """
        if pick in self.vars.keys():
            self.vars[pick].set(value)
        else:
            print("incorrect checkbox name")

if __name__ == "__main__":
    ROOT = tk.Tk()
    FRAME = tk.Frame(ROOT)
    BAR = Checkbar(FRAME, ["1", "2", "3"])
    BAR.pack()
    FRAME.pack()
    print(BAR.getvar())
    BAR.setvar("2", 0)
    print(BAR.getvar())
    ROOT.mainloop()