[IPython-dev] Propagate errors with ipython nbconvert --execute?

[Michael Waskom]

Hi,

ipython nbconvert has, of late, the --execute flag, which makes it handy to
work with notebooks as documentation source without having to keep the
output in a git repository.

However, when invoked as specified in the version 3 release notes:

ipython nbconvert --to notebook --inplace --execute my_notebook.ipynb

the converter trundles right along past exceptions raised in the code
blocks.

It would be helpful if there were some option so that the executable would
return with a nonzero error code when an exception was raised so problems
more easily detected. Is that possible? I didn't see any obvious arguments
to that flag when I looked at the help, but it's a complicated tool.

Thanks!
Michael
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