MagicStack/uvloop

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Ultra fast asyncio event loop.

Stars: 11.9k
Forks: 616
Open beginner issues: 0
Indexed issues: 129

Dominant language: Cython
License: Apache-2.0
Last GitHub push: Jul 14, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

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129 open issues indexed

`connect_read_pipe` double-closes the underlying fd, possibly closing an unrelated fd Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

MagicStack/uvloop#763 · Opened Sep 10, 2026
Directly constructed `uvloop.loop.Server(None)` segfaults in `close()` Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

MagicStack/uvloop#760 · Opened Aug 30, 2026
License not clear Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

MagicStack/uvloop#759 · Opened Aug 28, 2026
TypeError: create_task() got an unexpected keyword argument 'eager_start' Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

MagicStack/uvloop#754 · 1 comment · 1 reaction · Opened Jul 15, 2026
Optimize `_SyncSocketReaderFuture` and with a Cythonized version of the `Future` Object Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

MagicStack/uvloop#750 · Opened May 14, 2026
uvloop runs at_fork hook when running subprocess Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

MagicStack/uvloop#749 · Opened May 6, 2026
CI: Enable GitHub Actions CI for ppc64le (Power architecture) support Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

MagicStack/uvloop#745 · Opened Apr 17, 2026
Switch to Trusted Publishing for package upload to PyPI in CI Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

MagicStack/uvloop#741 · 2 reactions · Opened Mar 25, 2026
uvloop may sleep less than `n` for asyncio.sleep(n) Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

MagicStack/uvloop#739 · Opened Mar 19, 2026
echoclient.py fails on recent MacOS and Linux Python releases that default to the spawn start‑method Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MagicStack/uvloop#735 · Opened Mar 14, 2026
Add riscv64 (linux_riscv64) wheel to PyPI releases Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

MagicStack/uvloop#732 · Opened Mar 12, 2026
Python 3.13 Error Walking Stack w/ PYTHONASYNCIODEBUG=1 Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

MagicStack/uvloop#730 · 2 comments · 1 reaction · Opened Mar 5, 2026
(Feature request) `loop.create_task` to accept arbitrary `**kwargs` Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

MagicStack/uvloop#718 · 2 reactions · Opened Jan 15, 2026
uvloop debug mode crashes on Python 3.14 during async generator finalization (traceback.walk_stack sees non-frame object) Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

MagicStack/uvloop#715 · 4 comments · 2 reactions · Opened Jan 14, 2026
inconsistent file descriptor blocking state when running in asyncio vs uvloop Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

MagicStack/uvloop#712 · Opened Jan 2, 2026
start_tls() loses buffered data and doesn't work when upgrading a stream Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MagicStack/uvloop#707 · 2 reactions · Opened Dec 18, 2025
Segfault in uvloop 0.22.1 Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

MagicStack/uvloop#706 · 2 comments · 4 reactions · Opened Dec 12, 2025
`asyncio.get_event_loop` raises error instead of spawning new loop when no loop is running. Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

MagicStack/uvloop#702 · 8 comments · 9 reactions · Opened Oct 17, 2025
AttributeError: type object 'async_generator_asend' has no attribute 'f_lineno' Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MagicStack/uvloop#699 · 1 comment · Opened Oct 15, 2025
Uvloop ./configure error could not determine link -lib inteface Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

MagicStack/uvloop#695 · 1 reaction · Opened Oct 12, 2025
Fails to build on Raspbian 13 Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

MagicStack/uvloop#691 · 2 comments · Opened Oct 9, 2025
Wiriting cdef extension classes for `Future` objects for speeding up `_SyncSocketReaderFuture` and `_SyncSocketWriterFuture` Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

MagicStack/uvloop#689 · Opened Sep 25, 2025
Asynchronous multiprocessing.Pipe reads throw when using uvloop Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MagicStack/uvloop#686 · Opened Aug 15, 2025
TCP Transport RuntimeError with Python 3.13 + uvloop Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

MagicStack/uvloop#685 · 4 comments · 2 reactions · Opened Jun 27, 2025
uvloop wheels don't include libuv LICENSE files Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

MagicStack/uvloop#684 · 3 comments · Opened Jun 24, 2025
Python3.13 support - `close_clients` Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

MagicStack/uvloop#683 · 1 reaction · Opened Jun 6, 2025
aiodns tests fail because "example.com" gives different IP address on each query Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

MagicStack/uvloop#682 · Opened Jun 5, 2025
how to check whether my local uvloop uses io_usring or not? Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

MagicStack/uvloop#678 · Opened May 10, 2025
Debug tests fail with Cython 3.1.0 Open

Difficulty 3/5 1-2 days Newbie friendliness 28/100

MagicStack/uvloop#677 · 1 comment · Opened May 10, 2025
Support datagram endpoints over netlink sockets Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

MagicStack/uvloop#676 · 1 comment · 2 reactions · Opened May 2, 2025
Allow context for tasks that block the event loop Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MagicStack/uvloop#656 · 2 comments · 1 reaction · Opened Mar 5, 2025
RuntimeError: File descriptor 2877 is used by transport <TCPTransport closed=False reading=True 0x55b8dc9baa90> Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

MagicStack/uvloop#653 · 2 comments · 2 reactions · Opened Jan 27, 2025
Spawning a subprocess crashes the interpreter if subinterpreters exist Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MagicStack/uvloop#650 · Opened Jan 1, 2025
[bug report]uv__finish_close: Assertion `!(handle->flags & UV_HANDLE_CLOSED)` failed. Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

MagicStack/uvloop#649 · 1 comment · Opened Dec 16, 2024
[feature request] add loop._run_once and loop._set_is_runnning api to easy the process of OS gui event loop integrate Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

MagicStack/uvloop#648 · 1 comment · 2 reactions · Opened Nov 30, 2024
test_process_env_2 not portable to non-FHS systems Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

MagicStack/uvloop#647 · Opened Nov 30, 2024
Python 3.12 Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

MagicStack/uvloop#643 · Opened Nov 11, 2024
cannot import name 'Loop' from 'uvloop.loop' on platform armv7l Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

MagicStack/uvloop#641 · Opened Oct 26, 2024
Error installing on a RedPitaya platform armv7I Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

MagicStack/uvloop#640 · Opened Oct 25, 2024
Missing pre-build wheel of the uvloop python package for musl & glib on armv7. Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MagicStack/uvloop#635 · 2 reactions · Opened Oct 19, 2024
uvloop is grouping responses to multiple requests/messages Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

MagicStack/uvloop#631 · 7 comments · 2 reactions · Opened Sep 22, 2024
signal handler sockets error on close leaving loop in 'running' state indefinitely Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

MagicStack/uvloop#625 · Opened Sep 6, 2024
[openbsd] tests/test_regr1.py::TestIssue39Regr::test_issue39_regression hangs inifinitely Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

MagicStack/uvloop#621 · Opened Aug 24, 2024
[openbsd] test_fs_event.py causes Segmentation fault in python Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MagicStack/uvloop#620 · Opened Aug 24, 2024
create_subprocess_shell does not have the user parameter that asyncio has Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

MagicStack/uvloop#618 · Opened Aug 16, 2024
Unable to pip install uvloop on Android using Termux Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MagicStack/uvloop#613 · 3 comments · Opened Aug 1, 2024
sys.exit(...) exception swallowed by uvloop Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

MagicStack/uvloop#612 · 3 comments · 1 reaction · Opened Jul 28, 2024
BusError in uvloop within loop extract_stack for nested async_generators Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

MagicStack/uvloop#611 · 2 reactions · Opened Jul 10, 2024
Access length of the ._ready queue? Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

MagicStack/uvloop#607 · 1 comment · Opened Jun 6, 2024
Qualify claim of being drop-in replacement to asyncio Open

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

MagicStack/uvloop#605 · 7 reactions · Opened May 3, 2024

MagicStack/uvloop

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