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uvloop 0.23.0 - #768
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github-actions[bot] merged 1 commit intoSep 30, 2026
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Changes ======= * Add Python 3.15 and 3.15t wheel builds and CI coverage (#758) (by @honglei @fantix in f7c0547) * Add support for the `eager_start` keyword argument in create_task() (#748) (by @samypr100 in 3cbb095 for #746 #718) * Add thread name prefix to the default thread pool executor (#636) (by @inikolaev @fantix in 0582f94 for #562) * Add support for special hostname `<broadcast>` (#592) (by @jpbede in 3060ceb for #540) * Upgrade libuv to v1.52.1 (#753) (by @fantix in e8efea4 for #752) * Improve performance by using Python C API to enter/exit context (#627) (by @tarasko in 837ef22) * Improve performance/latency of Transport.write (#619) (by @tarasko in 1d9b6e0) * Replace some SSL vectorcall with direct methods (#626) (by @tarasko in 6a27cbe) * Optimize SSL buffered reads using C values (#629) (by @tarasko in a308f75) Fixes ===== * Detach socket on create_connection cancellation to prevent fd double-close (#740) (by @junjzhang @fantix in dc680eb for #645 #738) * Remove `loop._ready_len` in favor of `len(loop._ready)` (#721) (by @x42005e1f in 5910a18 for #720) * Prefer inspect.iscoroutinefunction (#705) (by @MatthieuDartiailh in fd65027 for #703) * Fix context tests by explicitly yielding after run_in_executor (#743) (by @samypr100 in 6cd24cb) * Fix test_create_connection_open_con_addr with Python 3.13.9+ (#713) (by @shadchin in b93141a for #701) * Skip flaky test_cancel_post_init on asyncio 3.13+ (#714) (by @fantix in 3ea5c85 for #709) * Fix flaky test_fs_event (#717) (by @fantix in 8da4547) * Use C __atomic builtins for debug counters (#719) (by @fantix in 836e3b2) * Update the example to work with Python 3.14 (#710) (by @Jamie-Chang in b74c2f1) Build ===== * Replace pkg_resources with packaging and use Cython 3.1 (#742) (by @samypr100 in b377b7c for #729) * Remove wheel as a build dependency (#696) (by @DimitriPapadopoulos in 173e88c) * Support any number of flags in UVLOOP_OPT_CFLAGS (#630) (by @mgorny in 963a5f3)
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Sep 30, 2026
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The PyPI publishing failed (invalid trusted publisher credentials). |
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Yeah unfortunately - let me fix that! |
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I saw the release on PyPI. Thanks @fantix |
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Changes
Add Python 3.15 and 3.15t wheel builds and CI coverage (Add Python 3.15 to CI and fix test issues #758)
(by @honglei @fantix in f7c0547)
Add support for the eager_start keyword argument in create_task() (feat(loop): support eager_start in loop.create_task #748)
(by @samypr100 in 3cbb095 for support **kwargs on loop.create_task like in 3.13 and 3.14 #746 (Feature request) loop.create_task to accept arbitrary **kwargs #718)
Add thread name prefix to the default thread pool executor (Add thread name prefix to the default thread pool executor #636)
(by @inikolaev @fantix in 0582f94 for Set thread name prefix for default event loop thread pool #562)
Add support for special hostname <broadcast> (Add support for special hostname <broadcast> #592)
(by @jpbede in 3060ceb for sendto fails if ip address is "<broadcast>" #540)
Upgrade libuv to v1.52.1 (Upgrade libuv to v1.52.1 #753)
(by @fantix in e8efea4 for Bump bundled libuv to ≥1.49 so io_uring isn't silently on by default #752)
Improve performance by using Python C API to enter/exit context (Improve performance by using Python C API to enter/exit context #627)
(by @tarasko in 837ef22)
Improve performance/latency of Transport.write (Improve performance and reduce latency of Transport.write by attempting to send data immediately if all write buffers are empty #619)
(by @tarasko in 1d9b6e0)
Replace some SSL vectorcall with direct methods (Improve SSL performance by calling SSLProtocol methods directly, not through the python's vectorcall interface #626)
(by @tarasko in 6a27cbe)
Optimize SSL buffered reads using C values (Improve SSL performance by avoiding SSLWantReadError exception and using much faster checks whenever possible #629)
(by @tarasko in a308f75)
Fixes
Detach socket on create_connection cancellation to prevent fd double-close (Detach socket on create_connection cancellation to prevent fd double-close #740)
(by @junjzhang @fantix in dc680eb for Information exposure bug: response leaking to wrong requests in uvicorn-based server under heavy load #645 create_connection(sock=sock) does not detach socket on cancellation, causing fd double-close #738)
Remove loop._ready_len in favor of len(loop._ready) (Fix race conditions on loop._ready_len #721)
(by @x42005e1f in 5910a18 for loop.call_soon_threadsafe() behaves as non-thread-safe in free-threading #720)
Prefer inspect.iscoroutinefunction (Do not use deprecated asyncio.iscoroutinefunction #705)
(by @MatthieuDartiailh in fd65027 for DeprecationWarning: 'asyncio.iscoroutinefunction' is deprecated in uvloop.loop.Loop.run_in_executor in Python 3.14 #703)
Fix context tests by explicitly yielding after run_in_executor (fix(tests): explicit yield in test_create_ssl_server_manual_connection_lost #743)
(by @samypr100 in 6cd24cb)
Fix test_create_connection_open_con_addr with Python 3.13.9+ (Fix test test_create_connection_open_con_addr with Python 3.13.9+ #713)
(by @shadchin in b93141a for tests/test_tcp.py::Test_AIO_TCP::test_create_connection_open_con_addr fails on Python 3.13.9 #701)
Skip flaky test_cancel_post_init on asyncio 3.13+ (test: skip flaky test_cancel_post_init on AIO 3.13+ #714)
(by @fantix in 3ea5c85 for tests/test_process.py::TestAsyncio_AIO_Process::test_cancel_post_init fails randomly #709)
Fix flaky test_fs_event (test: fix flaky test_fs_event #717)
(by @fantix in 8da4547)
Use C __atomic builtins for debug counters (test: use C __atomic builtins for debug counters #719)
(by @fantix in 836e3b2)
Update the example to work with Python 3.14 (Update the example to work with 3.14 #710)
(by @Jamie-Chang in b74c2f1)
Build
Replace pkg_resources with packaging and use Cython 3.1 (fix(build): use packaging instead of relying on pkg_resources from setuptools #742)
(by @samypr100 in b377b7c for Use of deprecated / removed pkg_resources #729)
Remove wheel as a build dependency (Get rid of wheel as a dependency #696)
(by @DimitriPapadopoulos in 173e88c)
Support any number of flags in UVLOOP_OPT_CFLAGS (Support any number of flags in UVLOOP_OPT_CFLAGS #630)
(by @mgorny in 963a5f3)