[Numpy-discussion] change to memmap subclass propagation

Allan Haldane allanhaldane at gmail.com
Wed Mar 30 15:37:14 EDT 2016

Hi all,

This is a warning for a planned change to np.memmap in

The return values of ufuncs and fancy slices of a memmap will now be
plain ndarrays, since those return values don't point to mem-mapped memory.

There is a possibility that if you are subclassing memmap using multiple
inheritance something may break. We don't think anyone will be affected,
but please reply if it does affect you.


More information about the NumPy-Discussion mailing list