from Tkinter import *
import threading
import time
 
class process(threading.Thread):
    def __init__(self):
        threading.Thread.__init__(self)
 
    def run(self):
        print 'hello'
        time.sleep(60)
        print 'bye'        
 
#The class process derives from threading.Thread. whenver we say process.start it spawns #a new thread and calls it's 'run' method
def startThread():
    process().start()
 
root = Tk()
frame = Frame(root)
frame.pack()
 
#when user clicks button it calls 'startThread' command
but = Button(frame,text='start',command=startThread)
but.pack()
 
text = Text(frame)
text.pack()
 
root.mainloop()