I am using a Jupyter notebook running in VSCode to test some ideas for a work project and I am using a package that is in a private GitHub repo. I encountered certain conflicts with versions of jax and numpy and after some fiddling trying to fix the issues, I simply re-installed said package to make sure I was using the correct versions of all required packages. Everything seemed fine until I re-opened the notebook and found a bunch of Import "<package name>" could not be resolved Pylance.
The imports still work and the code runs, however, PyLance appears not to be "seeing" said package.
I am using a conda Python 3.8 environment and to re-install the package I ran
pip install -e . --force-reinstall
I have also tried un-installing and re-installing the package, as well as creating a brand new conda env, and then installing the package there. Neither of these options worked however and I was stuck with the same issue.
Upon inspection of what is in sys.path I saw a strange entry
'__editable__.<package_name>-<package_version>.finder.__path_hook__'
I know that a colleague (who does not have this issue) does not see anything similar and instead has the correct local path to the package.
I should also note that I have the Python extension enabled, which includes the Jupyter and Pylance extensions as well. I have tried re-installing those extensions as well and that did not solve the issue either.
Edit.
I will add that I only get this PyLance error in notebooks. If I open a regular Python file then all PyLance features appear to be working as expected.
Try adding the following to your VSCode settings.json file
"python.analysis.extraPaths": [
"<path-to-project-root-of-editable-installed-package>",
],