[IPython-dev] GUI support: conflicts between IPython 0.11 and Matplotlib/ETS

Brian Granger ellisonbg.net@gmail....
Fri Feb 26 11:47:00 CST 2010


All,

I had a thought. It seems that it's really impossible (or at least
> impractical) to monkey-patch the GUI toolkits such that you can run a
> regular old unmodified app exactly the same way inside and outside of
> ipython. Gael's right -- that way lies loss of hair (and I"ve lost
> enough in the last ten years as it is).
>
> However, as it happens, I've been using ipython for a wx GUI app of mine
> (with no ETS or MPL), and it sort-of-works, and also locks up and
> crashes fairly regularly. So the threading solution isn't really robust
> either. Also, when wx starts using Cocoa on OS-X, putting the GUI in
> another thread won't be an option anymore anyway.
>
>
The old threaded code is a train wreck - it is not thread safe in the least
bit
and we have to do crazy hack to get Ctrl-C to work across threads.  The
result is, well, an eventual train wreck.

So:
>
> > - non-threaded gui support with pyos_inputhook, that would require
> > some code changes.  If this can give a really robust solution and the
> > needed changes aren't too intrusive, I could see matplotlib, ETS and
> > possibly others adding the necessary adaptation (especially if we
> > provide it in ipython already so for the users it ends up being almost
> > a one-liner).
>
> Exactly -- while you can't expect unmodified regular old wx code to
> work, we could provide alternative app startup code that a user can
> simply cut and past in, and then have an app that will work with and
> without ipython -- I think that's a fine solution.
>
>
Yes, this should be fairly easy to do.

Cheers,

Brian


> So for now, is there a sample, minimal wx app that works with the new
> pyos_inputhook code?
>
> -Chris
>
>
>
>
>
> --
> Christopher Barker, Ph.D.
> Oceanographer
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