.md round-tripping Broken on %%python3 magic

[psychemedia]

Just noticed this in a notebook that uses %%python3 magic to demonstrate code execution in separate cells.

If I'm editing a markdown file in Jupyter notebook UI under Jupytext, if I have a code cell:

%%python3
a = 1
print(a)

if I save the file and then reopen it, the %%python3 block cell magic has been stripped.

[mwouts]

Thanks @psychemedia for reporting this. I will have a look.

[mwouts]

@psychemedia , I was able to reproduce (and fix) this. In the next release that should work. Note that the cell magic is absent from the Markdown representation, as python3 becomes the cell language, i.e. that cell starts with ```python3 instead of ```python.

[mwouts]

Hello @psychemedia , this has been included in the latest RC, available with pip install jupytext==1.3.0rc1. Would you like to give it a try? Thanks

[psychemedia]

@mwouts Seems to work fine for me now.. thanks 👍