functions from 'random' module incorrectly highlighted

[ddejohn]

Environment data

• Pylance version: v2024.12.1
• OS and version: Windows 11 Education 23H2 and WSL Ubuntu
• Python version (& distribution if applicable, e.g. Anaconda): replicated in multiple Python 3 versions

Code Snippet

# test.py
from random import choice

Settings:

// .vscode/settings.json
{
    "editor.semanticHighlighting.enabled": true
}

Repro Steps

1. use semantic highlighting "editor.semanticHighlighting.enabled": true
2. import any function from the random module

Expected behavior

The imported function should be highlighted as a function (typically blue), and the documentation on mouse hover should report it as a function.

Actual behavior

The imported function is un-highlighted and is reported as a variable on mouse hover.

Logs

2025-01-18 22:19:11.564 [info] (Client) Pylance async client (2024.12.1) started with python extension (2024.22.2)
2025-01-18 22:19:12.027 [info] [Info  - 10:19:12 PM] (27670) Server root directory: file:///home/ddejohn/.vscode-server/extensions/ms-python.vscode-pylance-2024.12.1/dist
2025-01-18 22:19:12.034 [info] [Info  - 10:19:12 PM] (27670) Pylance language server 2024.12.1 (pyright version 1.1.389, commit ce1325fc) starting
2025-01-18 22:19:12.034 [info] [Info  - 10:19:12 PM] (27670) Starting service instance "DELETE_ME"
2025-01-18 22:19:12.125 [info] (27670) No configuration file found.
2025-01-18 22:19:12.125 [info] (27670) No pyproject.toml file found.
2025-01-18 22:19:12.126 [info] [Info  - 10:19:12 PM] (27670) Setting environmentName for service "DELETE_ME": "3.8.10 (global)"
2025-01-18 22:19:12.127 [info] [Info  - 10:19:12 PM] (27670) Setting pythonPath for service "DELETE_ME": "/bin/python3"
2025-01-18 22:19:12.127 [info] [Info  - 10:19:12 PM] (27670) No include entries specified; assuming /mnt/c/Users/devon/Documents/DELETE_ME
2025-01-18 22:19:12.128 [info] [Info  - 10:19:12 PM] (27670) Auto-excluding **/node_modules
2025-01-18 22:19:12.129 [info] [Info  - 10:19:12 PM] (27670) Auto-excluding **/__pycache__
2025-01-18 22:19:12.129 [info] [Info  - 10:19:12 PM] (27670) Auto-excluding **/.*
2025-01-18 22:19:12.162 [info] [Info  - 10:19:12 PM] (27670) Assuming Python version 3.8.10.final.0
2025-01-18 22:19:12.163 [info] (27670) Assuming Python platform Linux
2025-01-18 22:19:12.231 [info] [Info  - 10:19:12 PM] (27670) Execution environment: 3.8.10 (global)
2025-01-18 22:19:12.232 [info] [Info  - 10:19:12 PM] (27670)   Extra paths:
2025-01-18 22:19:12.232 [info] [Info  - 10:19:12 PM] (27670)     (none)
2025-01-18 22:19:12.232 [info] [Info  - 10:19:12 PM] (27670)   Python version: 3.8.10.final.0
2025-01-18 22:19:12.233 [info] [Info  - 10:19:12 PM] (27670)   Python platform: Linux
2025-01-18 22:19:12.233 [info] [Info  - 10:19:12 PM] (27670)   Search paths:
2025-01-18 22:19:12.234 [info] [Info  - 10:19:12 PM] (27670)     /home/ddejohn/.vscode-server/extensions/ms-python.vscode-pylance-2024.12.1/dist/typeshed-fallback/stdlib
2025-01-18 22:19:12.234 [info] [Info  - 10:19:12 PM] (27670)     /mnt/c/Users/devon/Documents/DELETE_ME
2025-01-18 22:19:12.235 [info] [Info  - 10:19:12 PM] (27670)     /mnt/c/Users/devon/Documents/DELETE_ME/typings
2025-01-18 22:19:12.235 [info] [Info  - 10:19:12 PM] (27670)     /home/ddejohn/.vscode-server/extensions/ms-python.vscode-pylance-2024.12.1/dist/typeshed-fallback/stubs/...
2025-01-18 22:19:12.235 [info] [Info  - 10:19:12 PM] (27670)     /home/ddejohn/.vscode-server/extensions/ms-python.vscode-pylance-2024.12.1/dist/bundled/stubs
2025-01-18 22:19:12.236 [info] [Info  - 10:19:12 PM] (27670)     /usr/lib/python3.8
2025-01-18 22:19:12.236 [info] [Info  - 10:19:12 PM] (27670)     /usr/lib/python3.8/lib-dynload
2025-01-18 22:19:12.237 [info] [Info  - 10:19:12 PM] (27670)     /usr/local/lib/python3.8/dist-packages
2025-01-18 22:19:12.237 [info] [Info  - 10:19:12 PM] (27670)     /usr/lib/python3/dist-packages
2025-01-18 22:19:12.238 [info] [Info  - 10:19:12 PM] (27670) Adding fs watcher for library directories:
 file:///usr/lib/python3.8
file:///usr/local/lib/python3.8/dist-packages
file:///usr/lib/python3/dist-packages
2025-01-18 22:19:12.238 [info] [Info  - 10:19:12 PM] (27670) Adding fs watcher for directories:
 file:///mnt/c/Users/devon/Documents/DELETE_ME
2025-01-18 22:19:12.239 [info] (27670) Searching for source files
2025-01-18 22:19:12.243 [info] [Info  - 10:19:12 PM] (27670) Found 1 source file
2025-01-18 22:19:12.243 [info] (27670) Adding fs watcher for files:
 file:///mnt/c/Users/devon/Documents/DELETE_ME/requirements.txt
file:///mnt/c/Users/devon/Documents/DELETE_ME/pyproject.toml
2025-01-18 22:19:12.252 [info] (27670) pytest configurations: {"message":"request cancelled","classes":["Test"],"files":["test_*.py","*_test.py"],"functions":["test"]}
2025-01-18 22:19:12.468 [info] (27670) pytest configurations: {"message":"script","classes":["Test"],"files":["test_*.py","*_test.py"],"functions":["test"]}
2025-01-18 22:19:12.597 [info] [Info  - 10:19:12 PM] (27670) Background analysis(1) root directory: file:///home/ddejohn/.vscode-server/extensions/ms-python.vscode-pylance-2024.12.1/dist
2025-01-18 22:19:12.600 [info] [Info  - 10:19:12 PM] (27670) Background analysis(1) started
2025-01-18 22:19:12.679 [info] (27670) pytest configurations: {"message":"request cancelled","classes":["Test"],"files":["test_*.py","*_test.py"],"functions":["test"]}
2025-01-18 22:19:12.843 [info] (27670) pytest configurations: {"message":"script","classes":["Test"],"files":["test_*.py","*_test.py"],"functions":["test"]}

[erictraut]

This is because of the way choice is defined in the community-maintained typeshed type stubs that are bundled with pylance. You can see here that choice is actually declared as a variable rather than a function. The variable is initialized with a reference to the Random.choice method.

[ddejohn]

My apologies, I meant to include screenshots of exactly that as additional context. However, I have distinct memories of the choice function being highlighted a long time ago. Am I just misremembering?

Edit: looks like I'm not misremembering 😅 -- I am still curious though why Pylance wouldn't "resolve" the bound method referenced by the variable?