make cells selectable

[pourquoi42]

typically, in a notebook there is all kinds of code that shouldn't be imported. It would be good to use tags on cells to mark those cells that actually need to be imported. I can create a PR if you let me contribute.

[pitamar]

Sure, sounds insteresting 🙂
Could you give me an example of the way you envision the use of tags for this?

[pourquoi42]

• individual cells can be marked with a tag
• in the nb metadata, there is a special key/value
  => only those cells will be run in the namespace. If the key is missing in the nb metadata, behaviour is as it is now

[pitamar]

Ah cool, I didn't know about that.
If that's the case then we could add a parameter to the register() function to specify what tags to import.
Something like this:

import jupyter_module_loader
jupyter_module_loader.register(tags=['tag1', 'tag2'])

If none are given it could revert to the default behavior of importing all the cells.
What do you think?

[pourquoi42]

yes, giving it as a parameter with .register() would be even better than configuring it in the notebook metadata.
The ultimate solution would be also to detect dependent cells, but that's "slightly" more involved.

[pitamar]

Cool, do you want to try implementing this?

[pourquoi42]

sure, but I can only make a PR if you add me as collaborator, I guess.

[pitamar]

Really? that's odd, it's a public repository..
I tried from another Github account and it allows me to fork and create a new pull request: