Async Runtime

Built-in Python library for writing concurrent code using async/await syntax, providing the default event loop and task scheduling system.

High-performance drop-in replacement for Python's default asyncio event loop, built on libuv for faster asynchronous I/O.

Modern async concurrency library focused on structured concurrency, making async code easier to reason about and safer to write.

Async networking and concurrency library that runs on top of asyncio or Trio — provides Trio-style structured concurrency primitives with broad compatibility.