AnyIO

AnyIO is a asynchronous compatibility API that allows applications and libraries written against it to run unmodified on asyncio, curio and trio.

It bridges the following functionality:

• Task groups

• Cancellation

• Threads

• Signal handling

• Asynchronous file I/O

• Synchronization primitives (locks, conditions, events, semaphores, queues)

• High level networking (TCP, UDP and UNIX sockets)

You can even use it together with native libraries from your selected backend in applications. Doing this in libraries is not advisable however since it limits the usefulness of your library.

AnyIO comes with its own pytest plugin which also supports asynchronous fixtures. It even works with the popular Hypothesis library.

The manual

• The basics
  • Installation
  • Running async programs
  • Using native async libraries
• Creating and managing tasks
  • Handling multiple errors in a task group
• Cancellation and timeouts
  • Timeouts
  • Shielding
  • Finalization
• Using synchronization primitives
  • Semaphores
  • Locks
  • Events
  • Conditions
  • Queues
  • Capacity limiters
• Working with threads
  • Running a function in a worker thread
  • Calling asynchronous code from a worker thread
• Asynchronous file I/O support
• Using sockets and streams
  • Working with TCP sockets
  • Working with UNIX sockets
  • Working with UDP sockets
  • Working with TLS
• Receiving operating system signals
• Testing with AnyIO
  • Creating asynchronous tests
  • Asynchronous fixtures
  • Specifying the backend to run on
  • Using AnyIO from regular tests
• API reference
  • Event loop
  • Miscellaneous
  • Timeouts and cancellation
  • Task groups
  • Threads
  • Async file I/O
  • Sockets and networking
  • Synchronization
  • Operating system signals
  • Testing and debugging
• Version history