A simple sticky note application using pygtk!

stickynote.py

import pygtk
pygtk.require('2.0')
import gtk
import os

class TextBox:
	def __init__(self):
		self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
		self.window.set_size_request(200,250)
		self.window.connect("destroy", self.close_application)
		self.window.set_title("sticky note")
		self.window.set_border_width(4)
		self.box1 = gtk.EventBox()
		self.box1.connect('leave_notify_event',self.save_text)
		self.window.add(self.box1)
		self.box1.show()
		
		self.textview = gtk.TextView()
		self.textbuffer = self.textview.get_buffer()
		self.textview.set_editable(True)
		self.box1.add(self.textview)
		self.textview.show()
		if os.path.isfile(os.path.join(os.getcwd(),'stickynote.txt')):
		  infile = open('stickynote.txt','r')
	  	if infile:
	  	  string = infile.read()
	  	  infile.close()
	  	  self.textbuffer.set_text(string)
		  
		self.window.show()
        
	def close_application(self, widget):
		file = open('stickynote.txt','w')
		startiter = self.textbuffer.get_start_iter()
		enditer = self.textbuffer.get_end_iter()
		text = self.textbuffer.get_text(startiter, enditer)
		file.write(text)
		file.close()
		gtk.main_quit()
	
	def save_text(self, widget, data=None):
	  file = open('stickynote.txt','w')
	  startiter = self.textbuffer.get_start_iter()
	  enditer = self.textbuffer.get_end_iter()
	  text = self.textbuffer.get_text(startiter, enditer)
	  file.write(text)
	  file.close()
	  return	
def main():
	gtk.main()
	
if __name__ == '__main__':
	TextBox()
	main()

I ported this to PyGObject with python three. In addition, I fixed the alternating tabs and spaces, added a shebang, and fixed a bug where using ^C wouldn't end the process on linux.

#!/usr/bin/env python3

import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
import os

class TextBox:
    def __init__(self):
        self.window = Gtk.Window(Gtk.WindowType.TOPLEVEL)
        self.window.set_size_request(200,250)
        self.window.connect("destroy", self.close_application)
        self.window.set_title("sticky note")
        self.window.set_border_width(4)
        self.box1 = Gtk.EventBox()
        self.box1.connect('leave_notify_event',self.save_text)
        self.window.add(self.box1)
        self.box1.show()
        self.textview = Gtk.TextView()
        self.textbuffer = self.textview.get_buffer()
        self.textview.set_editable(True)
        self.box1.add(self.textview)
        self.textview.show()
        if os.path.isfile(os.path.join(os.getcwd(),'stickynote.txt')):
            infile = open('stickynote.txt','r')
            if infile:
                string = infile.read()
                infile.close()
            self.textbuffer.set_text(string)
        self.window.show()

    def close_application(self, widget):
        file = open('stickynote.txt','w')
        startiter = self.textbuffer.get_start_iter()
        enditer = self.textbuffer.get_end_iter()
        _ = 'This is a throwaway variable.'
        text = self.textbuffer.get_text(startiter, enditer, _)
        file.write(text)
        file.close()
        Gtk.main_quit()

    def save_text(self, widget, data=None):
        file = open('stickynote.txt','w')
        startiter = self.textbuffer.get_start_iter()
        enditer = self.textbuffer.get_end_iter()
        _ = 'This is a throwaway variable.'
        text = self.textbuffer.get_text(startiter, enditer, _)
        file.write(text)
        file.close()
        return
def main():
    Gtk.main()

if __name__ == '__main__':
    import signal
    signal.signal(signal.SIGINT, signal.SIG_DFL)
    TextBox()
    main()