def __nonzero__( self ):
        return self() is not None
A convenient decorator to animate a generator that performs an
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/dispatch/saferef.py/BoundMethodWeakref.__nonzero__--crossover with--dataset/ETHPy150Open enthought/mayavi/mayavi/tools/animator.py/animate