A very vocal subset of users want the list of classes and functions in this form. There are enough people asking for it that we provide it. I'd guide new users to the online help as there are code samples and context for each class and function. I provide this as a good-enough solution for that subset of users that prefer to see their functions and classes all on one large piece of paper on their office wall. It's not made in any formal Esri processes. I do it in my spare time, outside of my regular duties, to make users happy.
All this script does is turn a subset of the documentation, which is available online (10.1, 10.2, Pro App 1.0) and make a graphviz document which is then exported to PDF. The internal sources provide XML versions of the HTML help which I parse in the script and turn into boxes full of words.
Every piece of information on these PDFs is already available, in a different form, in the ArcGIS help. There is no hidden information or secrets being withheld from you here. I am merely taking the same information in a different format (XML, versus the HTML it's published to online) and transforming some of it into yet another format. This PDF is not actively maintained or authored by hand. It is a script that makes that plain-text .graphviz file in the .ZIP archive, then uses the command-line graphviz tool to turn that text into PDF:
C:\Python27\python classloader.py arcpyxml\
"C:\Program Files (x86)\Graphviz\bin\fdp.exe" Diagram.graphviz -T pdf -o WallReference1.pdf
There's really not much more to it than that. This document isn't used anywhere internally by Esri. It's an artifact of the information within the help system and some scripting. The script will not be of much use to you as you don't have any XML help files. The XML help files are translated into HTML before they are published online.
