Typesheds shadow local modules when imported as from packageA import moduleB

[GeorchW]

When importing own modules that have the same name as other modules in the included typeshed fallbacks, the fallbacks are used instead of the local module under certain conditions, causing imports to fail for no apparent reason.

Environment data

• Pylance version: 2025.2.1
• OS and version: Ubuntu 24.04
• Python version (& distribution if applicable, e.g. Anaconda): 3.13

Code Snippet

# main.py:
from import_export import import_export_module
import_export_module.say_hello()

# import_export/import_export_module.py:
def say_hello():
    print("Hello from import_export!")

Results in ""import_export_module" is unknown import symbol (reportAttributeAccessIssue)".

Ctrl+Clicking on "import_export" leads to ~/.vscode/extensions/ms-python.vscode-pylance-2025.2.1/dist/typeshed-fallback/stubs/django-import-export/import_export/__init__.pyi, showing that the language server resolved import_export to a typeshed module. However, this module is not installed and doesn't really clash with the local module definition.

It works when changing the code sligthly, e.g. using one of these imports instead:

import import_export.import_export_module
import import_export.import_export_module as import_export_module
from import_export.import_export_module import say_hello

But since there are a lot of modules for which typesheds exist, and that set is not constant, this isn't really a feasible workaround in general.