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

Beginner friendly Everything

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129 open issues indexed

"Future exception was never retrieved" in Loop.create_connection Open

MagicStack/uvloop#437 · 3 comments · 1 assignee · Opened Aug 20, 2021
0.15.3: pytest is failing Open

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

MagicStack/uvloop#429 · 3 comments · Opened Jul 31, 2021
python: src/unix/core.c:930: uv__io_stop: Assertion `loop->watchers[w->fd] == w' failed. Open

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

MagicStack/uvloop#424 · 3 comments · Opened Jul 20, 2021
Test_AIO_TCPSSL::test_remote_shutdown_receives_trailing_data gets stuck on aarch64-linux Open

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

MagicStack/uvloop#412 · 5 comments · 3 reactions · Opened May 9, 2021
uvloop simply disable SIGCHLD? Open

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

MagicStack/uvloop#409 · 1 comment · 1 reaction · Opened Apr 20, 2021
Missing support for `interleave` and `happy_eyeballs_delay` in `create_connection` Open

help wanted missing feature

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

MagicStack/uvloop#406 · 6 comments · Opened Mar 22, 2021
Support nest-asyncio Open

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

MagicStack/uvloop#405 · 12 comments · 37 reactions · Opened Mar 16, 2021
Using vectorized IO (scatter/gather) Open

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

MagicStack/uvloop#404 · 3 comments · Opened Feb 28, 2021
Failed to create_datagram_endpoint() with AF_UNIX family Open

missing feature

Difficulty 3/5 1-2 days Newbie friendliness 38/100

MagicStack/uvloop#403 · 1 comment · Opened Feb 25, 2021
Import error with pypy37 Open

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

MagicStack/uvloop#380 · 9 comments · 4 reactions · Opened Jan 19, 2021
How to stop event loop in child thread ? Open

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

MagicStack/uvloop#370 · 2 comments · Opened Nov 23, 2020
Wheel for Pypy? Open

enhancement

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

MagicStack/uvloop#362 · 9 comments · 4 reactions · Opened Oct 10, 2020
set_exception_handler is not handling exception as expected. Open

need more info

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

MagicStack/uvloop#360 · 1 comment · 1 reaction · Opened Aug 31, 2020
Uvloop internal clock is not microsecond accurate Open

libuv

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

MagicStack/uvloop#359 · 5 comments · Opened Aug 27, 2020
Silently closes UDP socket Open

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

MagicStack/uvloop#338 · 3 comments · 1 reaction · Opened Apr 27, 2020
Application hanging after KeyboardInterrupt Open

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

MagicStack/uvloop#335 · 3 comments · Opened Apr 14, 2020
Can't peek at paused bytes (socket behind TCPTransport unavailable) Open

need to fix asyncio

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

MagicStack/uvloop#324 · 1 comment · Opened Mar 23, 2020
Event loop load metrics Open

enhancement

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

MagicStack/uvloop#322 · 2 comments · 3 reactions · Opened Mar 16, 2020
RuntimeError: Timeout context manager should be used inside a task Open

need more info

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

MagicStack/uvloop#274 · 10 comments · Opened Oct 3, 2019
Repeating calls to connect_write_pipe with sys.stdout as a stream lead to FileExistsError exception Open

help wanted need more info

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

MagicStack/uvloop#262 · 8 comments · Opened Jul 31, 2019
UVLoop and asyncio socket 'start_server' Open

help wanted need more info

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

MagicStack/uvloop#254 · 4 comments · Opened Jun 10, 2019
Memory leak in uvloop and tornado Open

help wanted need more info

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

MagicStack/uvloop#252 · 6 comments · Opened Jun 9, 2019
Transport sockets do not support shutdown() method Open

need to fix asyncio

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

MagicStack/uvloop#241 · 9 comments · Opened Mar 23, 2019
Implement sendfile support. Open

help wanted missing feature

Difficulty 4/5 3-5 days Newbie friendliness 42/100

MagicStack/uvloop#228 · 2 comments · 2 reactions · Opened Feb 15, 2019
Implement tracing support Open

enhancement

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

MagicStack/uvloop#163 · 12 comments · 4 reactions · Opened Jun 1, 2018
Blocking loop.subprocess_shell() and loop.subprocess_exec() Open

enhancement libuv need to fix asyncio

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

MagicStack/uvloop#118 · 20 comments · Opened Nov 27, 2017
How does uvloop (or I think libuv) does dns resolution, is it fully async? Open

question

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

MagicStack/uvloop#43 · 10 comments · Opened Jul 29, 2016
Could uvloop be implemented using CFFI? Open

question

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

MagicStack/uvloop#32 · 15 comments · 1 reaction · Opened Jun 18, 2016
windows support? Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 15/100

MagicStack/uvloop#14 · 55 comments · 44 reactions · Opened May 6, 2016

MagicStack/uvloop

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