[IPython-dev] Errors in ipython startup muted by Notebook?

[Fernando Perez]

On Wed, Aug 6, 2014 at 2:16 PM, Thomas Kluyver <takowl at gmail.com> wrote:

> Though we should also consider that not every kernel is launched from a
> visible terminal - users on the multiuser server won't be starting from a
> terminal, and now that I can double click on notebooks to open them, I'm
> often running the notebook without a terminal as well.
>

Can you see what these give in one of your fully headless kernels?

n [9]: sys.__stderr__.fileno()
Out[9]: 2

In [10]: sys.__stderr__.isatty()
Out[10]: True

In [11]: sys.__stderr__.closed
Out[11]: False

We should be able to detect when stderr isn't meaningfully attached to
anything, and at least redirect orphaned output to a dump log...

Cheers

f


-- 
Fernando Perez (@fperez_org; http://fperez.org)
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