Examples subset from "Programming Python, 4th Edition" (PP4E).

This is a small subset of the book's "PP4E" examples tree package,
containing only parts used by the standalone PyMailGUI program.  
Some used packages have been stripped of unused files, and others
have not; see the README.txt files in the subdirectories here.
Most reused examples have been expanded or modified substantially.

The complete examples tree contains some 1600 files in 175 folders,
is presented in the book, and is available online here:

    http://examples.oreilly.com/9780596158118/

For more on the book that hosts this code, see:

    http://learning-python.com/books/about-pp4e.html