pair without change to notebook.ipynb?

[huangyingw]

currently, after I run

jupytext --set-formats ipynb,py notebook.ipynb

it will make a small change to noteboo.ipynb file

+   "formats": "ipynb,py",

is it possible that, to pair an ipynb file without changing it ?

[mwouts]

Hello @huangyingw , that is a good question.

Pairing a notebook means that Jupytext needs to be aware somehow that the file belongs to a pair. As you mention this information is by default inserted in the notebook itself.

Maybe it is possible to use a configuration file for this. However, all the notebook in the configuration file directory and subdirectory will be paired. Would that be OK for you?

On my side I'll had a test that pairing notebooks through the config file does not change the notebook itself, that's a good test to have.

[huangyingw]

thanks for quick response. yes, a configuration definitely is ok for me.
I will try to use the configuration file option.

[mwouts]

Excellent! I forgot to mention that I did add the tests, and they seem to work as expected, cf. https://github.com/mwouts/jupytext/pull/600/files