websockets is a library for developing WebSocket servers and clients in Python. It implements RFC 6455 with a focus on correctness and simplicity. It passes the Autobahn Testsuite.
Built on top of Python's asynchronous I/O support introduced in PEP 3156, it provides an API based on coroutines, making it easy to write highly concurrent applications.
Installation is as simple as pip install websockets. It requires Python ≥ 3.4 or Python 3.3 with the asyncio module, which is available with pip install asyncio.
Documentation is available on Read the Docs.
Bug reports, patches and suggestions welcome! Just open an issue or send a pull request.