python 3.13.0rc3 and collections.abc

[stanislavlevin]

Bug description

False positive error of missing name in collections.abc.
For example linting over the code:

from collections.abc import MutableMapping

reports:

No name 'MutableMapping' in module 'collections.abc' (no-name-in-module)

This error started with updating Python from 3.13.0rc2 to 3.13.0rc3.
Most likely caused by python/cpython#124735

Command used

pylint

Pylint output

No name 'MutableMapping' in module 'collections.abc' (no-name-in-module)

Expected behavior

No error

Pylint version

Python 3.13.0rc3
astroid-3.3.4
pylint-3.3.1

[julian-smith-artifex-com]

I've just seen almost exactly the same problem today, with from collections.abc import Sequence.

On a Github Ubuntu machine and local Devuan machine.

[nitzmahone]

Yep, it looks like the static analysis can't follow the runtime-swap-a-dee-doo that's now happening when collections.abc loads. That's a gnarly one...

[jacobtylerwalls]

Fixed in astroid 3.3.5 if anyone needs this right away.

[nitzmahone]

Yep, works for us now- thanks for the quick fix and release!

[cavo789]

Hello

I got the same (I think) i.e. I'm using f.i. Callable (from typing import Callable) and pylint ask to replace by collections.abc.Callable but that module seems to not exists.

I'm using a Docker base image Python 3.13.0.

Pylint seems to be up to date (i've fired pip install --upgrade), can you guide me please?

What should I do to be able to respect suggestions from pylint?

Thanks!

[Pierre-Sassoulas]

collections.abc.Callable but that module seems to not exists.

Not sure what the problem is but I think it exists since python 3.9 ; https://docs.python.org/3.9/library/collections.abc.html#collections.abc.Callable (also in 3.13 : https://docs.python.org/3.13/library/collections.abc.html#collections.abc.Callable)

[jacobtylerwalls]

What is your version of astroid? You would need 3.3.5 to get this fix. There has not yet been a patch release of pylint to enforce that.

[cavo789]

So fast, thanks !

Ok so perhaps my editor is incorrectly configured.

Vscode throws that error while editing my .py script. I should admit that i've trust him (not fired the script in my console, will do tomorrow).

I got the error for Callable and for Sequence too...

If it helps, i'm using a .pylintrc file and start pylint in my console.

Thanks for any suggestions...

[cavo789]

What is your version of astroid? You would need 3.3.5 to get this fix. There has not yet been a patch release of pylint to enforce that.

Oh sorry i'm in a train (back to home) and was trying to find ressources so I can continue on this tomorrow...

I'm not sure about the version of astroid (will check tomorrow) and more didn't know what astroid is (i'm a junior in python's world).

I'm using python 3.13.0 (docker image) and i've installed pylint days ago with pip install pylint.

[Pierre-Sassoulas]

Try doing something like pip install astroid -U on pip (i.e. upgrade astroid to 3.3.5 explicitly)

[cavo789]

Hi all

Here is my current configuration:

> /usr/local/bin/python3 --version

Python 3.13.0

> pylint --version

pylint 3.3.1
astroid 3.3.5
Python 3.13.0 (main, Nov 12 2024, 02:27:08) [GCC 12.2.0]

(just to be sure, I've well fired pip install astroid -U; no change)

By running pylint on the command line here is some errors I got:

************* Module core.Entity
src/core/Entity.py:238:30: W6001: 'typing.Callable' is deprecated, use 'collections.abc.Callable' instead (deprecated-typing-alias)
src/core/Entity.py:303:33: W6001: 'typing.Callable' is deprecated, use 'collections.abc.Callable' instead (deprecated-typing-alias)

Then, I edit that file and replace from typing import Callable .

My trouble comes from VSCode:

I'm using the latest version of Pylint addon i.e. v2024.1.13171016 (last updated: 2024-11-13, 08:01:24).

Perhaps a setting in VSCode; I'll search in that direction.

[cavo789]

Solved. It was well a setting to add in my vscode settings.json file : "pylint.args": [ "--rcfile /app/.config/.pylintrc"] i.e. the path to my configuration file and where I've set the minimum version of Python with that line py-version = 3.13.0.

Thanks for the support guys!

[antoni-szych-rtbhouse]

Seems like it stopped working in 3.13.1 (Release date: 2024-12-03) again :(

public repo jobs:
✅ python 3.13.0, pylint (3.3.2), astroid (3.3.5): https://github.com/rtbhouse-apps/rtbhouse-python-sdk/actions/runs/12123430319/job/33798902493
❌ python 3.13.1, pylint (3.3.2), astroid (3.3.5): https://github.com/rtbhouse-apps/rtbhouse-python-sdk/actions/runs/12171673933/job/33949004704

rtbhouse_sdk/client.py:6:0: E0401: Unable to import 'collections.abc' (import-error)

python changelog shows 2 collections-related changes:

• gh-126699: Allow collections.abc.AsyncIterator to be a base for Protocols.
• gh-125245: Fix race condition when importing collections.abc, which could incorrectly return an empty module.

[hofrob]

Can confirm that something changed in 3.13.1.

• python 3.13.1
• astroid==3.3.6

import astroid
ast = astroid.MANAGER.ast_from_string("from collections import abc")
import_node = list(ast.get_children())[0]
import_node.do_import_module("collections").import_module("abc", relative_only=True)

I'm doing some custom linting and now I have to set relative_only=False only for the collections package. Since I don't fully understand what this flag does, I might just be doing this incorrectly though 😬

[jacobtylerwalls]

Yep, we're tracking the new problem in #10112