[Numpy-discussion] Re: weird interaction: pickle, numpy, matplotlib.histHi

Johannes Loehnert a.u.r.e.l.i.a.n at gmx.net
Thu Apr 6 04:16:11 CDT 2006


Hi,

> > But,  this brings up the point that currently the pickled raw-data which
> > is read-in as a string by Python is used as the memory for the new array
> > (i.e. the string memory is "stolen").    This should work.  The fact
> > that it didn't with sort was a bug that is now fixed in SVN.  However,
> > operations on out-of-byte-order arrays will always be slower.  Thus,
> > perhaps on pickle read the data should be copied to native byte-order if
> > necessary.
>
> Yes, I think that converting directly to native byteorder in
> unpickling time would be the best.

If you stored your data in wrong byte order for some odd reason (maybe you use 
a library that requires a certain byte order), then you would want pickle to 
deliver the data back exactly as stored. I think this should be made a user 
option in some way, although I do not know a good place for it right now.

Johannes




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