[IPython-dev] magics and metadata
Tue Jun 19 15:05:36 CDT 2012
On Tue, Jun 19, 2012 at 12:21 PM, MinRK <email@example.com> wrote:
> On Tue, Jun 19, 2012 at 12:05 PM, Jonathan Taylor
> <firstname.lastname@example.org> wrote:
>> That's the sort of use case I imagine as well, where a cell magic wants
>> to about something to the frontend a little more information about what
>> kind of cell it is (in your %%bash example, it would be a code cell for
>> which the code_mirror might use bash highlighting instead of python). This
>> seems like it could be accomplished with something parallel to
>> "publish_display_data" for cell metadata which different frontends can
>> handle differently.
> publish_display_data already takes a metadata arg. This has always been the
> case, but so far it's totally unused.
> I just noticed, this metadata is *not* included in the added fields
> preserved in the notebook, but I will get on that.
But I think the publish_display_data metadata is separate from the
cell metadata. Are you thinking we should save another set of
metadata with the display data output?
>> On Tue, Jun 19, 2012 at 8:49 AM, Thomas Kluyver <email@example.com> wrote:
>>> On 19 June 2012 16:08, Jonathan Taylor <firstname.lastname@example.org>
>>> > Yes, it would not be good to have the API of cell magics be notebook
>>> > specific. What about providing a reference to the current cell metadata
>>> > in
>>> > the Magics class that can be used to update the NotebookNode after
>>> > executing
>>> > cell.input? So, cell_magics would not have access to the metadata on
>>> > execution but could pass any metadata it wanted to back to the
>>> > notebook.
>>> Before we get too far into the mechanism, let's try to think about
>>> actual use cases, so we can figure out how things need to work.
>>> We can also see cell magics themselves as a sort of within-cell
>>> metadata. For example, the frontend might one day be aware that if a
>>> cell starts with %%bash, different syntax highlighting and tab
>>> completion rules apply to it. I think this would need to be within the
>>> frontend, rather than going through the kernel, because we want to use
>>> the new highlighting & completion before the cell is executed.
>>> IPython-dev mailing list
>> Jonathan Taylor
>> Dept. of Statistics
>> Sequoia Hall, 137
>> 390 Serra Mall
>> Stanford, CA 94305
>> Tel: 650.723.9230
>> Fax: 650.725.8977
>> Web: http://www-stat.stanford.edu/~jtaylo
>> IPython-dev mailing list
> IPython-dev mailing list
Brian E. Granger
Cal Poly State University, San Luis Obispo
email@example.com and firstname.lastname@example.org
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