mpl.cbook.MatplotlibDeprecationWarning

exception mpl.cbook.MatplotlibDeprecationWarning

A class for issuing deprecation warnings for Matplotlib users.

In light of the fact that Python builtin DeprecationWarnings are ignored by default as of Python 2.7 (see link below), this class was put in to allow for the signaling of deprecation, but via UserWarnings which are not ignored by default.

http://docs.python.org/dev/whatsnew/2.7.html#the-future-for-python-2-x