[Zope-dev] zope photo product 0-4-3 bug and fix.

I think I just squished a subtle and extremely annoying bug in 0.4.3 of the photo product at http://yyy.zope.org/Members/Drew/Photo Making a copy of display_defaults by a dictionary copy in the __init__ method is a Bad Thing because (shallow) copy doesn't copy substructures - it makes them all point to the same place. Fix = import the copy module and use copy.deepcopy(display_defaults) at initialisation: ie replace self.displays=display_defaults.copy() with self.displays=copy.deepcopy(display_defaults) # was display_defaults.copy()