from Tkinter import * # get Tk widget classes from gui6 import Hello # get the subframe class class HelloContainer(Frame): def __init__(self, parent=None): Frame.__init__(self, parent) self.pack() self.makeWidgets() def makeWidgets(self): Hello(self).pack(side=RIGHT) # attach a Hello to me Button(self, text='Attach', command=self.quit).pack(side=LEFT) if __name__ == '__main__': HelloContainer().mainloop()