Sourced from anyio's releases.

4.9.0

• Added async support for temporary file handling (#344; PR by @​11kkw)
• Added 4 new fixtures for the AnyIO pytest plugin:
  • free_tcp_port_factory: session scoped fixture returning a callable that generates unused TCP port numbers
  • free_udp_port_factory: session scoped fixture returning a callable that generates unused UDP port numbers
  • free_tcp_port: function scoped fixture that invokes the free_tcp_port_factory fixture to generate a free TCP port number
  • free_udp_port: function scoped fixture that invokes the free_udp_port_factory fixture to generate a free UDP port number
• Added stdin argument to anyio.run_process() akin to what anyio.open_process(), asyncio.create_subprocess(), trio.run_process(), and subprocess.run() already accept (PR by @​jmehnle)
• Added the info property to anyio.Path on Python 3.14
• Changed anyio.getaddrinfo() to ignore (invalid) IPv6 name resolution results when IPv6 support is disabled in Python
• Changed EndOfStream raised from MemoryObjectReceiveStream.receive() to leave out the AttributeError from the exception chain which was merely an implementation detail and caused some confusion
• Fixed traceback formatting growing quadratically with level of TaskGroup nesting on asyncio due to exception chaining when raising ExceptionGroups in TaskGroup.__aexit__ (#863; PR by @​tapetersen)
• Fixed anyio.Path.iterdir() making a blocking call in Python 3.13 (#873; PR by @​cbornet and @​agronholm)
• Fixed connect_tcp() producing cyclic references in tracebacks when raising exceptions (#809; PR by @​graingert)
• Fixed anyio.to_thread.run_sync() needlessly holding on to references of the context, function, arguments and others until the next work item on asyncio (PR by @​Wankupi)

4.8.0

• Added experimental support for running functions in subinterpreters on Python 3.13 and later
• Added support for the copy(), copy_into(), move() and move_into() methods in anyio.Path, available in Python 3.14
• Changed TaskGroup on asyncio to always spawn tasks non-eagerly, even if using a task factory created via asyncio.create_eager_task_factory(), to preserve expected Trio-like task scheduling semantics (PR by @​agronholm and @​graingert)
• Configure SO_RCVBUF, SO_SNDBUF and TCP_NODELAY on the selector thread waker socket pair (this should improve the performance of wait_readable() and wait_writable() when using the ProactorEventLoop) (#836; PR by @​graingert)
• Fixed AssertionError when using nest-asyncio (#840)
• Fixed return type annotation of various context managers' __exit__ method (#847; PR by @​Enegg)

4.7.0

• Updated TaskGroup to work with asyncio's eager task factories (#764)
• Added the wait_readable() and wait_writable() functions which will accept an object with a .fileno() method or an integer handle, and deprecated their now obsolete versions (wait_socket_readable() and wait_socket_writable()) (PR by @​davidbrochart)
• Changed EventAdapter (an Event with no bound async backend) to allow set() to work even before an async backend is bound to it (#819)
• Added support for wait_readable() and wait_writable() on ProactorEventLoop (used on asyncio + Windows by default)
• Fixed a misleading ValueError in the context of DNS failures (#815; PR by @​graingert)
• Fixed the return type annotations of readinto() and readinto1() methods in the anyio.AsyncFile class (#825)
• Fixed TaskInfo.has_pending_cancellation() on asyncio returning false positives in cleanup code on Python >= 3.11 (#832; PR by @​gschaffner)
• Fixed cancelled cancel scopes on asyncio calling asyncio.Task.uncancel when propagating a CancelledError on exit to a cancelled parent scope (#790; PR by @​gschaffner)

Sourced from anyio's changelog.

Version history

This library adheres to Semantic Versioning 2.0 <http://semver.org/>_.

UNRELEASED

• Added context manager mix-in classes (anyio.ContextManagerMixin and anyio.AsyncContextManagerMixin) to help write classes that embed other context managers, particularly cancel scopes or task groups ([#905](https://github.com/agronholm/anyio/issues/905) <https://github.com/agronholm/anyio/pull/905>_; PR by by @​agronholm and @​tapetersen)
• Added the ability to specify the thread name in start_blocking_portal() ([#818](https://github.com/agronholm/anyio/issues/818) <https://github.com/agronholm/anyio/issues/818>_; PR by @​davidbrochart)
• Added anyio.notify_closing to allow waking anyio.wait_readable and anyio.wait_writable before closing a socket. Among other things, this prevents an OSError on the ProactorEventLoop. ([#896](https://github.com/agronholm/anyio/issues/896) <https://github.com/agronholm/anyio/pull/896>_; PR by @​graingert)
• Fixed anyio.Path.copy() and anyio.Path.copy_into() failing on Python 3.14.0a7
• Fixed return annotation of __aexit__ on async context managers. CMs which can suppress exceptions should return bool, or None otherwise. ([#913](https://github.com/agronholm/anyio/issues/913) <https://github.com/agronholm/anyio/pull/913>_; PR by @​Enegg)
• Fixed rollover boundary check in SpooledTemporaryFile so that rollover only occurs when the buffer size exceeds max_size ([#915](https://github.com/agronholm/anyio/issues/915) <https://github.com/agronholm/anyio/pull/915>_; PR by @​11kkw)
• Migrated testing and documentation dependencies from extras to dependency groups

4.9.0

• Added async support for temporary file handling ([#344](https://github.com/agronholm/anyio/issues/344) <https://github.com/agronholm/anyio/issues/344>_; PR by @​11kkw)

• Added 4 new fixtures for the AnyIO pytest plugin:

  • free_tcp_port_factory: session scoped fixture returning a callable that generates unused TCP port numbers
  • free_udp_port_factory: session scoped fixture returning a callable that generates unused UDP port numbers
  • free_tcp_port: function scoped fixture that invokes the free_tcp_port_factory fixture to generate a free TCP port number
  • free_udp_port: function scoped fixture that invokes the free_udp_port_factory fixture to generate a free UDP port number

• Added stdin argument to anyio.run_process() akin to what anyio.open_process(), asyncio.create_subprocess_...(), trio.run_process(), and subprocess.run() already accept (PR by @​jmehnle)

• Added the info property to anyio.Path on Python 3.14

• Changed anyio.getaddrinfo() to ignore (invalid) IPv6 name resolution results when IPv6 support is disabled in Python

• Changed EndOfStream raised from MemoryObjectReceiveStream.receive() to leave out the AttributeError from the exception chain which was merely an implementation detail and caused some confusion

... (truncated)

• a6e9ebb Bumped up the version
• 9b9520d Fixed cyclic references in to_thread.run_sync() on asyncio (#887)
• 1f04d6b Added a note about asyncio cancellation semantics
• e14b172 Upgraded to a newer Sphinx version
• 7e13c49 Avoid refcycles in tracebacks from happy eyeballs exceptions (#809)
• d134da7 Raise EndOfStream from None in MemoryObjectReceiveStream.receive() (#889)
• 2840e06 Added cheaper implementation for no_other_refs() on Python 3.14 (#886)
• 31ce0a5 Added fixtures for generating bindable TCP/UDP ports (#856)
• cd85e47 Test on PyPy 3.11 on CI (#876)
• d228020 Detect blocking calls in coroutines using BlockBuster (#875)
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