Hello, please consider the following code...

import matplotlib.pyplot as pyplot
fig1 = pyplot.figure()
fig2 = pyplot.figure()
pyplot.show()

If I delete Figure 2, then Figure 1, the program finishes correctly.
If I delete Figure 1, then Figure 2, the program finishes with a segmentation error.
I believe that the program should not segfault in the second case.

Olivier
-- Matplotlib 1.5.1, Python 3.5.1, Debian Linux