Feature suggestion: new cell magic %%save_png

[kolibril13]

Similar to %%capture, it would be nice to have a cell magic to save Jupyter image cell output to files.
Usage could look like this:

%%save_png my_image_folder/foo.png
from IPython.display import Image
from pandas import Series
Series([1, 2, 2, 3, 3, 3]).hist()

and an implementation could look like this:
https://discourse.jupyter.org/t/cell-magic-to-save-image-output-as-a-png-file/11906/2?u=kolibril13

The benefit: Jupyter users won't have to look up e.g. fig.savefig("img/foo.png") or similar lines for other libraries and can simply type %%save_png.
I think IPython might be a good place for this feature, as similar cell magic already exists, and users won't need to install another package.

[bollwyvl]

There might be a more general approach, e.g. %%save_outputs path/to As a short hand for %%save_outputs --path path/to --pattern {idx}.{ext} Where _all_ outputs would get written, with an incrementing counter, e.g path/to/00.png path/to/00.txt Perhaps it could take as arguments extensions and/or mimetypes to limit this set. This is not entirely like nbexplode, and has also been used a few times where splitting (especially base64) content out from json is desirable.

[psychemedia]

Re: nbexplode, thombashi/sqlitebiter will also split a notebook into components across a set of simple sqlite database tables. (I don't think there's a recombiner though?)