False positive on python3.10 type generics python:S5644

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1

My team has recently set up Sonarqube Enterprise Edition Version 9.4 (build 54424) but have some false positives on our python3.10 code.

Our sonar-project.properties (key removed):

sonar.projectKey=...
sonar.python.version=3.10

I made an MRE like this, which makes use of type being a typing.Generic. It gets reported as python:S5644 “Item operations should be done on objects supporting them.”

type_alias = type[Exception]

I am aware that I can use the “Resolve as false positive” option, but I was more fearful that I have somehow not correctly set up the python version correctly.

2

Does anyone have thoughts or suggestions on this? It is annoying to get things such as this with python3.10
Fix this invalid "|" operation between incompatible types (str and str).

from __future__ import annotations
from typing import TYPE_CHECKING
if TYPE_CHECKING:
    from _typeshed import OpenBinaryMode, OpenTextMode

mode: "OpenBinaryMode" | "OpenTextMode" # false positive here
3

Hi @spagh-eddie ,
Thanks a lot for reporting those two false positives!
I created SONARPY-1007 and SONARPY-1008 to keep track of those.
Fixes should be available within next version of SonarQube