This was derived from a graphical image; the image will be used
more directly in a subsequent version of this document. From the
top down: - Your App Here (Python) - A Python application makes
a Tkinter call. - Tkinter (Python Module) - This call (say, for
example, creating a button widget), is implemented in the
Tkinter module, which is written in Python. This Python function
will parse the commands and the arguments and convert them into
a form that makes them look as if they had come from a Tk script
instead of a Python script. - tkinter (C) - These commands and
their arguments will be passed to a C function in the tkinter -
note the lowercase - extension module. - Tk Widgets (C and Tcl)
- This C function is able to make calls into other C modules,
including the C functions that make up the Tk library. Tk is
implemented in C and some Tcl. The Tcl part of the Tk widgets is
used to bind certain default behaviors to widgets, and is
executed once at the point where the Python Tkinter module is
imported. (The u