Support Jupyter syntax in regular python file with #%% marker.

[rowillia]

Environment data

• Language Server version: Pylance language server 2023.8.10 (pyright 932e542d)
• OS and version: Ubuntu 22.04
• Python version: 3.10.11

Code Snippet

# ---
# jupyter:
#   jupytex t:
#     text_representation:
#       extension: .py
#       format_name: percent
#       format_version: '1.3'
#       jupytext_version: 1.15.0
#   kernelspec:
#     display_name: Python 3
#     name: python3
# ---
#%% %autoawait trio

#%%
import trio
(await trio.run_process(
    ['echo', 'hello'], 
    capture_stdout=True)
).stdout.decode().strip()

Repro Steps

Load the above file in VSCode. Note that VSCode recognizes it as the jupytext syntax and treats it as a notebook, but still shows an error for the top level await.

Expected behavior

No error - I would expect Jupytext notebooks to behave the same as Jupyter notebooks (this issue was fixed in #1754 for Jupyter notebooks).

Actual behavior

[JonathanCroenen]

I am having the exact same issue right now, because top-level await in a notebook just works (and I believe with python -m asyncio script.py this would also work?). I would love to be able to just suppress the pyright/pylance check for this specific error in my notebooks/ folder or something, but this error doesn't seem to have an identifier.

[heejaechang]

we could mark the regular python file as ipython mode then parser will parse it as notebook cell so that won't be considered as syntax error, but not sure what kind of consequences it will cause down the road.

[JonathanCroenen]

Thanks for the reply, I understand the issue and this is ofcourse a niche usecase. You mention the ipython mode though, is that something I could manually invoke? Calling pyright with some flag to set it to ipython mode in my notebooks folder would be a simple fix!

[rchiodo]

There's an internal hack, but it's rather limited. Name the file notebook_ipython_mode.py

[rchiodo]

An internal team at microsoft needed this in order to support notebooks without having implemented the notebook API for lsp

[JonathanCroenen]

Haha cool, thank you. I'll have a look if I could hack something together with this.