Tkinter: Adding scrollbars to a container that changes size or is dynamically sized

TkinterScrollExample.py

import tkinter as tk

root = tk.Tk()

# Tkinter widgets needed for scrolling.  The only native scrollable container that Tkinter provides is a canvas.
# A Frame is needed inside the Canvas so that widgets can be added to the Frame and the Canvas makes it scrollable.
cTableContainer = tk.Canvas(root)
fTable = tk.Frame(cTableContainer)
sbHorizontalScrollBar = tk.Scrollbar(root)
sbVerticalScrollBar = tk.Scrollbar(root)

# Updates the scrollable region of the Canvas to encompass all the widgets in the Frame
def updateScrollRegion():
	cTableContainer.update_idletasks()
	cTableContainer.config(scrollregion=fTable.bbox())

# Sets up the Canvas, Frame, and scrollbars for scrolling
def createScrollableContainer():
	cTableContainer.config(xscrollcommand=sbHorizontalScrollBar.set,yscrollcommand=sbVerticalScrollBar.set, highlightthickness=0)
	sbHorizontalScrollBar.config(orient=tk.HORIZONTAL, command=cTableContainer.xview)
	sbVerticalScrollBar.config(orient=tk.VERTICAL, command=cTableContainer.yview)

	sbHorizontalScrollBar.pack(fill=tk.X, side=tk.BOTTOM, expand=tk.FALSE)
	sbVerticalScrollBar.pack(fill=tk.Y, side=tk.RIGHT, expand=tk.FALSE)
	cTableContainer.pack(fill=tk.BOTH, side=tk.LEFT, expand=tk.TRUE)
	cTableContainer.create_window(0, 0, window=fTable, anchor=tk.NW)

# Adds labels diagonally across the screen to demonstrate the scrollbar adapting to the increasing size
i=0
def addNewLabel():
	global i
	tk.Label(fTable, text="Hello World").grid(row=i, column=i)
	i+=1

	# Update the scroll region after new widgets are added
	updateScrollRegion()

	root.after(1000, addNewLabel)

createScrollableContainer()
addNewLabel()

root.mainloop()

I'm writing to express my many thanks for uploading this. I've been agonizing over dynamically updating the scroll bar region for almost a month now, and this is the first time I've come across the .update_idletasks() method. I had everything else figured out up till that point, and if I hadn't found this bit of code I would probably have given up!!
Thanks again!