1 from Tkinter import *

     2 import string

     3 

     4 # This program  shows how to use a simple type-in box

     5 

     6 class App(Frame):

     7     def __init__(self, master=None):

     8         Frame.__init__(self, master)

     9         self.pack()

    10 

    11         self.entrythingy = Entry()

    12         self.entrythingy.pack()

    13 

    14         # and here we get a callback when the user hits return. we could

    15         # make the key that triggers the callback anything we wanted to.

    16         # other typical options might be <Key-Tab> or <Key> (for anything)

    17         self.entrythingy.bind('<Key-Return>', self.print_contents)

    18 

    19     def print_contents(self, event):

    20         print "hi. contents of entry is now ---->", self.entrythingy.get()

    21 

    22 root = App()

    23 root.master.title("Foo")

    24 root.mainloop()