On Wed, Oct 20, 2010 at 5:08 PM, Matthew Brett <[email protected]> wrote: > Hi, > > I have just run into this oddness: > > In [28]: dt1 = np.dtype('f4') > > In [29]: dt1.str > Out[29]: '<f4' > > In [30]: dt2 = dt1.newbyteorder('<') > > In [31]: dt2.str > Out[31]: '<f4' > > In [32]: dt1 == dt2 > Out[32]: True > > In [33]: hash(dt1) == hash(dt2) > Out[33]: False > > This is the same as: > > http://www.mail-archive.com/[email protected]/msg13299.html > > My question was - does the team still agree this is a bug?
This should have been fixed when I implemented the hashing protocol for dtypes. This is a bug in the hashing protocol implementation, most likely caused by "=" and "<" being considered different by the hashing function. I will try to take a look at it (the function to fix is _array_descr_builtin in hashdesc.c if you feel like doing some C right now :) ). cheers, David _______________________________________________ NumPy-Discussion mailing list [email protected] http://mail.scipy.org/mailman/listinfo/numpy-discussion
