False negative on unused import of nested modules

[draustin]

Pyright does not report all unused imports of modules inside a package.

I have a namespace package package with three modules:

unused-import-false-negative.py only contains import statements.

import package.module1 # Pylance reports that "package.module1" is not accessed
import package.module2 # No error reported.
import package.module3 # No error reported.

I would expect all three imports to be reported as unused.

Also, if I refer to package.module2 or package.module3, then the unused import error package.module1 goes away (i.e. Pyright/Pylance reports zero errors).

I got the same results after adding an __init__.py to package.

I get the same results using Pylance v2024.12.100 (pre-release) in VS Code and Pyright 1.1.391 on the command line.