> First try seems to show that just changing my class def to: > class ndarray_inMrcFile(N.memmap): > def __array_finalize__(self,obj): > self.Mrc = getattr(obj, 'Mrc', None) > > Seems to add the wanted attribute back into result of transpose().
Yep. Specific subclass attributes should be defined in __array_finalize__. > However now I get (many!) exceptions like: > Exception exceptions.AttributeError: "'ndarray_inMrcFile' object has no > attribut e '_mmap'" in <bound method ndarray_inMrcFile.__del__ of > ndarray_inMrcFile([ 6,.... > > Do I need to call super.__array_finalize__(obj) first ? Nope, you just need a __new__ that calls the __new__ of you parent class. Keep it minimal. _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
