As programmers, we hardly need to understand the class hierarchy of Tkinter. After all, we have been able to code all the applications so far without bothering with the overall class hierarchy. However, knowing the class hierarchy enables us to trace the origin of a method within the source code or source documentation of a method.
In order to understand the class hierarchy of Tkinter, let's take a look at the source code of Tkinter. On the Windows installation, the source code of Tkinter is located at path\of\Python\Installation\Lib\tkinter\. On my Linux machine, the source code is located at /usr/lib/python3.6/tkinter/ .
If you open the __init__.py file from this folder in a code editor and look at its list ...