tornado

Tornado is a Python-based web framework and asynchronous networking library. It utilizes non-blocking network I/O to handle tens of thousands of simultaneous open connections, which makes it particularly suitable for applications requiring long-lived connections, such as WebSockets and long polling. The framework provides tools for building web applications, including a RequestHandler for managing HTTP requests and an Application object for routing. It integrates with Python's asyncio for asynchronous execution.