[FIXED] jupyter lab 2.2.2 %pylab inline deprecation warnings

Issue

After upgrading matplotlib and jupyter, jupyter lab, the inline magic produces deprecation warnings. While this is somewhat helpful, these warnings get in the way.

Of course one can turn off the warnings: import warnings warnings.filterwarnings('ignore') But it doesn't seem to be the best way.

Question: how to resolve these warnings without turning all warnings off?

The magic:

%pylab inline

Warnings:

In C:\Python37\lib\site-packages\matplotlib\mpl-data\stylelib\_classic_test.mplstyle: 
The text.latex.preview rcparam was deprecated in Matplotlib 3.3 and will be removed two minor releases later.
In C:\Python37\lib\site-packages\matplotlib\mpl-data\stylelib\_classic_test.mplstyle: 
The mathtext.fallback_to_cm rcparam was deprecated in Matplotlib 3.3 and will be removed two minor releases later.
In C:\Python37\lib\site-packages\matplotlib\mpl-data\stylelib\_classic_test.mplstyle: Support for setting the 'mathtext.fallback_to_cm' rcParam is deprecated since 3.3 and will be removed two minor releases later; use 'mathtext.fallback : 'cm' instead.
In C:\Python37\lib\site-packages\matplotlib\mpl-data\stylelib\_classic_test.mplstyle: 
The validate_bool_maybe_none function was deprecated in Matplotlib 3.3 and will be removed two minor releases later.
In C:\Python37\lib\site-packages\matplotlib\mpl-data\stylelib\_classic_test.mplstyle: 
The savefig.jpeg_quality rcparam was deprecated in Matplotlib 3.3 and will be removed two minor releases later.
In C:\Python37\lib\site-packages\matplotlib\mpl-data\stylelib\_classic_test.mplstyle: 
The keymap.all_axes rcparam was deprecated in Matplotlib 3.3 and will be removed two minor releases later.
In C:\Python37\lib\site-packages\matplotlib\mpl-data\stylelib\_classic_test.mplstyle: 
The animation.avconv_path rcparam was deprecated in Matplotlib 3.3 and will be removed two minor releases later.
In C:\Python37\lib\site-packages\matplotlib\mpl-data\stylelib\_classic_test.mplstyle: 
The animation.avconv_args rcparam was deprecated in Matplotlib 3.3 and will be removed two minor releases later.

Solution

Pylab is deprecated, as far I'm aware. See the link below (best I could find, a thread on Ipython repo). I think there were many issues with it clobbering namespaces. The typical recommendation I've seen is simply to replace it with the %matplotlib inline.

https://github.com/ipython/ipython/issues/5071/#issuecomment-34547616

Answered By - Nate