Chiral

Chiral is a lightweight coroutine-based networking framework for high-performance internet and Web services.

Coroutines in Chiral are based on Python 2.5's generators, as specified in PEP 342. The Coroutine class wraps around a generator and handles scheduling. Coroutines are expected to yield WaitConditions, which carry the conditions for the coroutine to be resumed again. This makes asynchronous networking simple and straightforward; see the API documentation (docstrings) for more.

On top of Coroutines, Chiral provides:

• TCP connection management
• High-performance networking with epoll()
• Introspection and on-the-fly code reloading
• A fast HTTP server supporting WSGI, with extensions for Coroutine-based pages
• A native memcached client
• Deeply-integrated COMET support
• In progress: an instant messaging framework; a thread pool system for calling blocking code
• Planned: asynchronous database access with DB-API or SQLAlchemy

Chiral development is currently inactive. Source is available from git.