[Numpy-discussion] bug is arr.real for byteswapped array
Sebastian Haase
haase at msg.ucsf.edu
Tue Aug 22 12:33:53 EDT 2006
Hi,
probably related to this is that
arr[2].real is read-only ...
I noticed that you cannot assign
to arr[2].real :
>>> a[2].real =6
Traceback (most recent call last):
File "<input>", line 1, in ?
TypeError: attribute 'real' of 'genericscalar' objects is not writable
>>> a.real[2] =6
>>>
>>> a[2].real.flags
CONTIGUOUS : True
FORTRAN : True
OWNDATA : True
WRITEABLE : False
ALIGNED : True
UPDATEIFCOPY : False
>>> a.real[2].flags
<snipped unchanged fields>
WRITEABLE : False
>>>
>>> a.real.flags
CONTIGUOUS : False
FORTRAN : False
OWNDATA : False
WRITEABLE : True
>>> a[2].flags
CONTIGUOUS : True
FORTRAN : True
OWNDATA : True
WRITEABLE : False
ALIGNED : True
UPDATEIFCOPY : False
Is the "not writable" restriction necessary ?
Thanks,
Sebastian Haase
On Tuesday 22 August 2006 01:46, Albert Strasheim wrote:
> Hello all
>
> > <snip>
> >
> > >>> a = N.arange(4, dtype='>c8')
> > >>> a.imag.max()
> >
> > 4.60060298822e-41
>
> Confirmed on Windows 32-bit with 1.0b4.dev3050.
>
> I created a ticket here:
>
> http://projects.scipy.org/scipy/numpy/ticket/265
>
> Regards,
>
> Albert
>
>
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