Please keep discussion on the list.
That warning means some thing is importing pyplot before your file. You
need to make sure that you use `matplotlib.use` before anything in your
process import `pyplot`.
You may need to change your `matplotlibrc` file.
Tom
On Sun, May 31, 2015, 00:30 Peter Row
Blitting not working for the osx backend is a long standing issue due to
differences between what is allowed in the different gui frame works.
You have to change the backend via `use` before you import pyplot. If you
are still getting the error it is likely you tried to change the backend
_after_
