"I learned of the SimPy package when I was contacted by one of its creators, Klaus Müller. Dr. Müller had read the Charming Python installments that presented techniques for using Python 2.2+ generators to implement semi-coroutines and 'weightless' threads. In particular--and much to my gratification--he found that these techniques were useful for implementing Simula-67 style simulations in Python.
"It turned out that Tony Vignaux and Chang Chui had previously created another Python library that was conceptually closer to Simscript, and that used standard threading rather than my semi-coroutine technique. Working together, the group determined that the generator-based style was much more efficient and recently launched a GPL'd project on SourceForge, called SimPy, currently at beta status. Professor Vignaux hopes to use the unified SimPy package in his future university teaching at the University of Victoria at Wellington; I believe the library is also quite applicable to a variety of applied problems..."
