On 4/7/11 1:40 AM, John Ladasky wrote:
On Apr 5, 10:43 am, Philip Semanchuk<phi...@semanchuk.com> wrote:
And as Robert Kern pointed out, numpy arrays are also pickle-able.
OK, but SUBCLASSES of numpy.ndarray are not, in my hands, pickling as
I would expect. I already have lots of code that is based on such
subclasses, and they do everything I want EXCEPT pickle correctly. I
may have to direct this line of questions to the numpy discussion
group after all.
Define the __reduce_ex__() method, not __getstate__(), __setstate__().
http://docs.python.org/release/2.6.6/library/pickle.html#pickling-and-unpickling-extension-types
ndarrays are extension types, so they use that mechanism.
--
Robert Kern
"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco
--
http://mail.python.org/mailman/listinfo/python-list
