Bug report

Bug summary

I can't figure out how to stop the cocoa mainloop once it's going with the macosx backend. This could be a missing API, or just one that I don't know about.

I suspect an API that exposes sending[NSApp stop] is all that's needed, but I'm not sure.

Code for reproduction

importmatplotlibmatplotlib.use('macosx')importmatplotlib.pyplotaspltfrommatplotlib.backends.backend_macosximportTimerMac,showdefstop_mainloop():print("I don't know how to quit you")t.stop()t=TimerMac(2000)t.add_callback(stop_mainloop)t.start()show.mainloop()

Actual outcome

Loop runs forever because I don't know how to stop it.

Matplotlib version

• Operating system: macOS 10.13.2
• Matplotlib version: 2.0.2 (conda-forge)
• Matplotlib backend (print(matplotlib.get_backend())): MacOSX
• Python version: 3.6.1