# Trying to reproduce the bug reported on issue837234


import Tkinter
import sys


class MainWindow(Tkinter.Tk):
    def __init__(self):
        Tkinter.Tk.__init__(self)
        
        Tkinter.Button(self, text='Quit', command=self.do_quit).pack()
        Tkinter.Button(self, text='SysExit', command=self.do_quit).pack()
        Tkinter.Button(self, text='IdleQuit', command=self.do_idlequit).pack()
        Tkinter.Button(self, text='IdleSysExit', command=self.do_idlesysexit).pack()

        self.bind('<Key>', self.do_key)


    def do_key(self, event=None):
        if event.char == 'q':
            self.do_quit()
        elif event.char == 'x':
            self.do_sysexit()

    def do_quit(self, event=None):
        self.after(1000, self.quit)

    def do_sysexit(self, event=None):
        self.after(1000, sys.exit)

    def do_idlequit(self, event=None):
        self.after_idle(self.quit)

    def do_idlesysexit(self, event=None):
        self.after_idle(sys.exit)



root = MainWindow()
root.mainloop()