Matplotlib interactive mode not working on Win

[melund]

@scopatz recently fixed part of the mpl xontrib xonsh/xonsh#2225. But the functionality doesn't work completely work on Windows. Figures still block.

See here:

It just shows a blank figure. If I then run plt.show() the figure renders but then the prompt it blocked. Closing the figure returns the prompt. But if I press ctrl-c instead I get the following error.

snail@sea ~\Documents\xonsh ie
$ plt.show() (CTRL-C)
QObject::killTimers: timers cannot be stopped from another thread
PS C:\Users\mel\Documents\xonsh>

I looked for solutions. @asmeurer recently asked a related question on SO.
http://stackoverflow.com/questions/42019739/how-to-build-a-python-repl-with-non-blocking-matplotlib-like-ipythons-matplot

We may have to hook into PTK's eventloop. I wonder if this is also the solution on Windows.

@asmeurer . Just curious what REPL are you building?

For community

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