[IPython-dev] What causes the kernel to stay busy?

[Eric Firing]

On 2014/12/11, 9:13 PM, Tony Cappellini wrote:
> Python 2.7.8, iPython 2.2.0
>
> I'm running on Mavericks 10.9.5, and I have one notebook running in Safari.
>
> I'm parsing some html- not a lot of data.
> Sometimes the notebook stops responding, even though it gives you the
> illusion
> that your python code was executed. (this is very misleading)
>
> Your only clue is the tiny black circle in the upper right corner.
> Once that shows up, game over. If I restart the kernel, all of the
> variables loose their values. Interrupting the kernel doesn't help.
>
> What is causing this and can it be fixed?

Sounds like that pesky app-nap.  I think your problem will be solved with:

conda update ipython

The newer version disables app-nap in ipython.

Eric

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