[IPython-dev] start_ipython() and multiprocessing

Thomas Kluyver takowl at gmail.com
Thu Jul 13 03:23:49 EDT 2017


Hi Hugo,

See the 'safe importing of main module' section here:

https://docs.python.org/3/library/multiprocessing.html#the-spawn-and-forkserver-start-methods

Best wishes,
Thomas

On 12 July 2017 at 22:33, Hugo Gagnon <freesoftware.ipython at user.fastmail.fm
> wrote:

> Hi,
>
> When I do "import multiprocessing; p = multiprocessing.Pool()" in IPython
> everything works fine. However when I put "import IPython;
> IPython.start_ipython()" in say "test.py" and then do "$python test.py" and
> try starting a pool with the above command the prompt starts "multiplying
> itself" and sometimes crashes.
>
> I use Anaconda 4.4.0 Python 2.7.13 IPython 5.3.0 on Windows 7.
>
> --
>   Hugo Gagnon
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