I would consider this a python bug, and I just added a
> quick fix for me. Changed line 511 in Prompts.py to say
> if self.Pprint and hasattr(arg, '__repr__'): instead of
> if self.Pprint:
> You probably don't want to add this for everything, but
> would it be possible to override the display method of
> the CachedOutput when the pylab option is specified?
> Further, you could only do this for python v.2.4.
I'll see if I can add repr to all the pycxx mpl classes. Perhaps this
is the cause of the issubclass segfault as well, which would be a