Collapsible error messages

[psychemedia]

When working in Jupyter notebooks, long error messages can often be intrusive and add a lot of visual clutter to notebooks.

A couple of extensions ([classic notebook nbextensions/skip-traceback(https://github.com/ipython-contrib/jupyter_contrib_nbextensions/tree/master/src/jupyter_contrib_nbextensions/nbextensions/skip-traceback) and jupyterlab-skip-traceback) both collapse the traceback under the error header, but I note that the friendly extension breaks at least the classic notebook extension.

For the Jupyter layout, it would be useful to return errors using the skip-traceback style folded display (perhaps with a setting to override a by-default collapsed view with an expanded view).

[aroberge]

Thanks for this suggestion. I do not use Jupyter notebooks - except for testing with friendly - and was not aware of these extensions. I will look into implementing this after I finish preparing a talk for PyConAu.

[aroberge]

I take this as different than what I propose in #5. Here, I consider finding a way to make the output of friendly compatible with the existing extensions. From what I have read, this means "packaging" the information compiled by friendly in a different way, rather than simply printing it.

I think that an iPywidget like suggested in #5 would be more user-friendly, but want to give the option for people to keep the existing ones (especially if they do not control what is installed by default and want to use friendly).

[psychemedia]

I think there are three possible approaches.

Either:

• make your extension work with the other extensions;
• make the other extensions work with your extension;
• provide a collapsible heading with your extension that replicates the functionality of the other extensions even if it breaks them.

[aroberge]

Closing this issue as I have decided that implementing my own version should suffice.