How to make button in Python Tkinter stay pressed until another one is pressed

Question

I am trying to find a way Tkinter to make the Start button stay pressed until I press the Stop button.

from Tkinter import *
import tkMessageBox


class MainWindow(Frame):
    def __init__(self):
        Frame.__init__(self)
        self.master.title("input")
        self.master.minsize(250, 150)
        self.grid(sticky=E+W+N+S)

        top=self.winfo_toplevel()
        top.rowconfigure(0, weight=1)
        top.columnconfigure(0, weight=1)

        for i in range(2):self.rowconfigure(i, weight=1)
        self.columnconfigure(1, weight=1)

        self.button0 = Button(self, text="Start", command=self.save, activeforeground="red")
        self.button0.grid(row=0, column=0, columnspan=2, pady=2, padx=2, sticky=E+W+N+S)

        self.button1 = Button(self, text="Stop", command=self.stop, activeforeground="red")
        self.button1.grid(row=1, column=0, columnspan=2, pady=2, padx=2, sticky=E+W+N+S)

    def save(self):
        pass

    def stop(self):
        pass


if __name__=="__main__":
   d=MainWindow()
   d.mainloop()

Answer 1

So you can set the relief of the button using its config, this makes it look like it is pressed.

def save(self):
    self.button0.config(relief=SUNKEN)
    # if you also want to disable it do:
    # self.button0.config(state=tk.DISABLED)
    #...

def stop(self):
    self.button0.config(relief=RAISED)
    # if it was disabled above, then here do:
    # self.button0.config(state=tk.ACTIVE)
    #...

EDIT

This doesn't work on Mac OSx apparently. This link shows how in should look: http://www.tutorialspoint.com/python/tk_relief.htm