The Qt4 backend crashes with a Segmentation Fault when no toolbar is requested. For example:
from matplotlib import pyplot as plt
from matplotlib import rcParams
rcParams['toolbar'] = 'None'
I have attached a possible patch, but since I've never really touched the Qt4 backend before, thought I'd solicit some feedback before committing.
backend_qt4.py.diff (1.57 KB)
Science Software Branch
Space Telescope Science Institute
Baltimore, Maryland, USA