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asyncio

asyncio is a library to write concurrent code using the async/await syntax.

asyncio is used as a foundation for multiple Python asynchronous frameworks that provide high-performance network and web-servers, database connection libraries, distributed task queues, etc.

asyncio is often a perfect fit for IO-bound and high-level structured network code.

asyncio provides a set of high-level APIs to:

  • run Python coroutines concurrently and have full control over their execution;
  • perform network IO and IPC;
  • control subprocesses;
  • distribute tasks via queues;
  • synchronize concurrent code;

Additionally, there are low-level APIs for library and framework developers to:

  • create and manage event loops, which provide asynchronous APIs for networking, running subprocesses, handling OS signals, etc;
  • implement efficient protocols using transports;
  • bridge callback-based libraries and code with async/await syntax.
Last update: November 14, 2023