We demonstrate the syntax on both MEL and Python commands in Maya, including passing arguments to them.We will demonstrate how to create procedures and definitions, what variables are and how to create them, and how to pass variables between procedures and definitions. Following that, we will show, in both MEL and in Python, some of the more common functions in programming. The first are iterators, which allow us to perform the same task over lists of objects and comes in several forms. The second function common to all programming languages is the conditional statement, which allows us to test conditions before executing code and allowing us to branch the program depending on what conditions are met. We finish by demonstrating how to save and reload your scripts in both languages.

Home page - http://3dmotive.com/series/intro-to-scripting-in-maya.html