Support formatting of all cells in notebook

[DonJayamanne]

Currently we have support for formatting individual cells
However formatting entire document does not seem to work (VSC Has a specific command for this)

Note: black supports ipynb out of the box

See #1187 (comment)

[nickeubank]

For what it's worth, I'm not actually sure this is feasible -- notebook cells are often run and written out of sequence, and I'm not sure if a formatter like black would be able to parse out-of-execution-order cells effectively, could it? I think a better solutions might be #7058

[MarcoGorelli]

For what it's worth, I'm not actually sure this is feasible -- notebook cells are often run and written out of sequence, and I'm not sure if a formatter like black would be able to parse out-of-execution-order cells effectively, could it? I think a better solutions might be #7058

Not sure I see what the issue is, but black's current way of running Jupyter Notebooks doesn't require cells to have been executed in order

[nickeubank]

Oh great! Right, I guess black doesn't care about syntax stuff like running undefined vars. Nevermind!

[jucor]

@DonJayamanne as workaround, since two months ago black supports formating .ipynb files :)

[rchiodo]

This will be fixed in the next release of the python extension. See this issue here:
microsoft/vscode#130719

[nickeubank]

@rchiodo Is it? I'm not seeing where this has been fixed...

[rchiodo]

Right click on a cell and pick format notebook:

[nickeubank]

Ah, nice! Is there a way to get this respect the usual "format on save" option for VS Code? And/or should that be a separate issue?

[rchiodo]

Format on save is actually this issue here. Please upvote it:
microsoft/vscode#120432

[nickeubank]

Perfect, thanks so much! Appreciate the handholding. :)

[nickeubank]

(Sharing with my students too, so if you see a flurry of upvotes, it's not spam. :) They're tired of getting points off for bad formatting)