How do I fix the deprecation warning that comes with pylab.pause?

Question

A short python program to demonstrate a bug I keep running into:

import pylab
pylab.ion()
pylab.title('doom')
pylab.pause(0)

If I run it, it works fine, but I get this warning:

/usr/lib/pymodules/python2.7/matplotlib/backend_bases.py:2280: MatplotlibDeprecationWarning: Using default event loop until function specific to this GUI is implemented

If I remove the pause line, then I don't get the warning, but my plot ceases to exist as soon as the program finishes.

I should like an elegant way to get the behaviour without the warning. Can anyone help?

Answer 1

Use the warnings module. https://pymotw.com/2/warnings/

import warnings
..
..
warnings.filterwarnings("ignore",".*GUI is implemented.*")

This looks for the pattern 'Gui is implemented' in any warning being issued and ignores it but allows other warnings to be reported.