Building Your Own Asyncio in Python: Demystifying await

This article provides a clear and in-depth explanation of asyncio, the core mechanism of asynchronous programming in Python. The author builds a simplified version of asyncio step-by-step, revealing the inner workings of the `await` keyword and culminating in a fully functional echo server. Starting with the basics of generators and coroutines, the article gradually introduces core concepts like Scheduler and Future, and details how to use the `selectors` module for non-blocking I/O. By reading this, readers gain a deeper understanding of the underlying mechanisms of Python's asynchronous programming and demystify the 'magic' of `await`.