trio 0.23.0 - AssertionError in Conda

[anakin87]

To reproduce

docker run -it continuumio/miniconda3 /bin/bash

pip install trio

python -c "import trio"

Error

Traceback (most recent call last):
File "/opt/conda/lib/python3.11/site-packages/trio/_subprocess.py", line 50, in
from os import pidfd_open
ImportError: cannot import name 'pidfd_open' from 'os' (/opt/conda/lib/python3.11/os.py)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "", line 1, in
File "/opt/conda/lib/python3.11/site-packages/trio/init.py", line 23, in
from . import abc, from_thread, lowlevel, socket, to_thread
File "/opt/conda/lib/python3.11/site-packages/trio/lowlevel.py", line 48, in
from ._subprocess import open_process as open_process
File "/opt/conda/lib/python3.11/site-packages/trio/_subprocess.py", line 54, in
assert sys.version_info < (3, 9) or sys.implementation.name != "cpython"
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError

Why

It seems related to

trio/trio/_subprocess.py

Lines 49 to 54 in eef24cb

	try:
	from os import pidfd_open
	except ImportError:
	if sys.platform == "linux":
	# This workaround is only needed on 3.8 and pypy
	assert sys.version_info < (3, 9) or sys.implementation.name != "cpython"

• the os package in Conda deviates from std python and does not have pidfd_open --> ImportError (see a similar issue).
• sys.platform == "linux" is True
• sys.version_info < (3, 9) or sys.implementation.name != "cpython" is False or False --> AssertionError

[caner-cetin]

Having same issue. Bump.

[caner-cetin]

0.22.2 also fixes the issue.

[A5rocks]

Hi, sorry about this!

-snip- sorry, should have read the initial comment better.

[caner-cetin]

I am not quite sure, but you can check https://hub.docker.com/layers/library/python/3.9-slim-buster/images/sha256-5c6f48d1bb7f592ed9b78b4c4efce099957da5fc0b677b8e79a8ba2bd1b087e8 to see which environment I am running my code.

[A5rocks]

FYI fix is released in trio==0.23.1