ModuleNotFoundError: No module named 'typing.io'; 'typing' is not a package

Bug

OS: Windows 10 Professional x64, Build 1909 Python: 3.8.10 VSCode: 1.58.2 AREPL: 2.0.2

When using importlib.resources, AREPL generates the error:

File "C:\Program Files\Python38\lib\importlib\resources.py", line 13, in <module>
    from typing.io import BinaryIO, TextIO
ModuleNotFoundError: No module named 'typing.io'; 'typing' is not a package

Minimal Example

1. Create python 3.8.10 virtual environment with venv in project folder:

py -m venv .venv

1. Create VSCode user settings to point AREPL to virtual environment:

"AREPL.pythonPath": "${workspaceFolder}\\.venv\\Scripts\\python.exe"

1. Create file demo.py in project folder
2. Import importlib.resources in demo.py:

import importlib.resources as rsrc

1. Click cat button for AREPL to run repl

Expected Behavior AREPL uses virtual environment and is able to import importlib.resources

Screenshots

[Almenon]

I believe this is related to AREPL’s typescript code.

The Typescript code doesn’t have much to do with the python code outside of spawning the process and pipe I/O. The issue is more likely to be with the AREPL python code, which does some funky stuff around importing so there is a fresh state each time. https://github.com/Almenon/AREPL-backend/blob/master/python/arepl_python_evaluator.py

One thing that’s pretty weird is that I don’t get this bug with python 3.9, only 3.8 and 3.10 (haven’t checked 3.11). I also can’t reproduce the issue in a unit test. @adam-grant-hendry do you get this issue with 3.9?

Also, adding “typing.io” to the modules_to_keep variable in C:\Users\<yourUser>\.vscode\extensions\almenon.arepl-2.0.3\node_modules\arepl-backend\python\arepl_python_evaluator.py (insert after line 27) fixes the issue on my end. Does it fix the issue for you?

[gulash007]

Hello, can you please explain how exactly did you fixed it ? Do i need to do it on VS code. Where can i find the ressource.py file ?

Sorry for a late reply. For what it’s worth, the resources.py file is a part of the importlib library. On my mac it’s located at /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/importlib/resources.py.