In 2008, Guido van Rossum, the author of Python, forked the language into two branches—2.x and 3.x. This was done to clean up the language and make it more consistent.
Python 3.x broke backward compatibility with Python 2.x. For example, the print statement in Python 2.x was replaced by the print() function that would now take arguments as parameters.
We coded all the Tkinter programs in Python Version 3.x. However, in case you need to maintain or write new Tkinter programs in Python 2.x, the transition should not be very difficult.
The core functionality of Tkinter remains the same between 2.x and 3.x. The only significant change to Tkinter when moving from Python 2.x to Python 3.x involves changing the way the Tkinter ...