#nesting of containers (frames).
from Tkinter import *
class MyApp:
def __init__(self, parent):
self.myParent = parent
self.myContainer1 = Frame(parent)
self.myContainer1.pack()
self.top_frame = Frame(self.myContainer1)
self.top_frame.pack(side=TOP,
fill=BOTH,
expand=YES,
)
self.left_frame = Frame(self.top_frame, background="red",
borderwidth=5, relief=RIDGE,
height=250,
width=50,
)
self.left_frame.pack(side=LEFT,
fill=BOTH,
expand=YES,
)
self.right_frame = Frame(self.top_frame, background="tan",
borderwidth=5, relief=RIDGE,
width=250,
)
self.right_frame.pack(side=RIGHT,
fill=BOTH,
expand=YES,
)
root = Tk()
myapp = MyApp(root)
root.mainloop()