config option to truncate traceback

It would be useful to be able to be able to have the option to truncate the display of error traceback. When writing documentation, it is useful just to show that an error occurred without showing the full traceback. This practice is commonly done in terminal view.

There is sys.tracebacklimit setting. However, it does not work in Jupyter and needs a rather complex override: https://stackoverflow.com/questions/46222753/how-do-i-suppress-tracebacks-in-jupyter

I would propose adding a jupyter_sphinx_truncate_traceback option that would just show the first two lines of the normal traceback message followed by an ellipsis, e.g.

---------------------------------------------------------------------------
ZeroDivisionError                         Traceback (most recent call last)
...

[danielballan]

Would running %xmode Minimal, perhaps in a hidden cell, address this use case for Python-based kernels?

[seanpue]

Thanks @danielballan! That’s a great solution, and it works in this use case.