jupytext still not working (content handlers still seem to be bypassed).

[cycomanic]

#147 was fixed with #148 but nbclassic still downloads .py files instead of opening via jupytext as referred to in #147. Is there something that jupytext should be doing differently?

[echarles]

.py opens fine for me on nbclassic. Can you bring more details on how you are using jupytext and how you come to a download? Thx.

[cycomanic]

I just tested again:

$vf new jupytest # create virtual environment
$pip install jupyterlab nbclassic
$pip install jupytext
$touch test.py
$jupyter nbclassic

If I open the test.py file in the notebook window I get the browser save file dialog. (This is firefox on linux). I also tried a different py file which was previously linked to a notebook and I get the same.

Output of jupyter labextensions list:

JupyterLab v3.4.8
/home/jschrod/.virtualenvs/jupytexttest/share/jupyter/labextensions
        jupyterlab_pygments v0.2.2 enabled OK (python, jupyterlab_pygments)
        jupyterlab-jupytext v1.3.8+dev enabled OK (python, jupytext)

/usr/share/jupyter/labextensions
        jupyter-matplotlib v0.10.5 enabled OK

(it seems some of my system extensions still get picked up, but that should not really be a problem should it?)

Output of jupyter nbextensions list:

Known nbextensions:
  config dir: /home/jschrod/.virtualenvs/jupytexttest/etc/jupyter/nbconfig
    notebook section
      jupytext/index  enabled 
      - Validating: OK
  config dir: /etc/jupyter/nbconfig
    notebook section
      jupyter-matplotlib/extension  enabled 
      - Validating: OK
      rise/main  enabled 
      - Validating: OK
      jupyter-js-widgets/extension  enabled 
      - Validating: OK

Which is relevant for nbclassic btw, labextensions or nbextensions?

[echarles]

There may be side-effects due to jupyterlab or jupytext, not sure. I have double checked and Firefox on MacOs opens correctly the py files. jupyter labextensions is for jupyterlab, for latests nbclassic, you have to use jupyter nbclassic-extension list. To be sure, can you post which version you have jupyter nbclassic --version

jupyter nbclassic-extension list
Known nbextensions:
  config dir: /Users/echarles/opt/miniconda3/envs/notebook/etc/jupyter/nbconfig
    notebook section
      nbextensions_configurator/config_menu/main  enabled 
      - Validating: OK
      jupyter-js-widgets/extension  enabled 
      - Validating: OK
    tree section
      nbextensions_configurator/tree_tab/main  enabled 
      - Validating: OK

[cycomanic]

OK I just uninstalled all system files for jupyter and redid it and I still get the same result.

Output of jupyter nbclassic-extension list

Known nbextensions:
  config dir: /home/jschrod/.virtualenvs/jupytext2/etc/jupyter/nbconfig
    notebook section
      jupytext/index  enabled 
      - Validating: OK

jupyter nbclassic --version is 0.4.5

In chromium .py files open as text files.

This is running arch linux with python 3.10

[Harlool]

Hi, I'm also facing the same issue.

nbclassic got updated to 0.4.8 in my Jupyter environment and since then, jupytext doesn't work properly as python files .py open now in a text format instead of opening in a notebook format despite having the notebook icon next to the files.

Current situation

Packages version :
jupytext 1.14.4 pyhcff175f_0
nbclassic 0.4.8 pyhd8ed1ab_0

Notebook icon next to .py file :

.py file open in text format (not even in the "Edit" view of nbclassic, just as a basic text file in the web browser default view) :

Previous situation

With the previous version of nbclassic 0.2.7 installed in my environment , jupytext was working fine.

Packages version :
jupytext 1.14.4 pyhcff175f_0
nbclassic 0.2.7 pyhd8ed1ab_0

Notebook icon next to .py file :

.py file open in notebook format :