from Tkinter import *
class MyApp:
def __init__(self, myParent):
self.myContainer1 = Frame(myParent)
self.myContainer1.pack()
self.button1 = Button(self.myContainer1)
self.button1["text"]= "Hello"
self.button1["background"] = "green"
self.button1.pack()
root = Tk()
myapp = MyApp(root)
root.mainloop()