[Numpy-discussion] memoryview shape/strides representation for ndim = 0

Travis Oliphant teoliphant@gmail....
Wed Aug 24 23:42:06 CDT 2011


On Aug 22, 2011, at 7:35 AM, Mark Dickinson wrote:

> On Mon, Aug 22, 2011 at 1:30 PM, Stefan Krah <stefan-usenet@bytereef.org> wrote:
>> Numpy arrays and memoryview currently have different representations
>> for shape and strides if ndim = 0:
>> 
>>>>> from numpy import *
>>>>> x = array(9, int32)
>>>>> x.ndim
>> 0
>>>>> x.shape
>> ()
>>>>> x.strides
>> ()
>>>>> m = memoryview(x)
>>>>> m.ndim
>> 0L
>>>>> m.shape is None
>> True
>>>>> m.strides is None
>> True
>> 
>> 
>> I think the Numpy representation is nicer. Also, I think that memoryviews
>> should attempt to mimic the underlying object as closely as possible.
> 
> Agreed on both points.  If there's no good reason for m.shape and
> m.strides to be None, I think it should be changed.

I can't think of any good reason not to change it to use the NumPy defaults.   This sounds right to me.

-Travis

> 
> Mark
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---
Travis Oliphant
Enthought, Inc.
oliphant@enthought.com
1-512-536-1057
http://www.enthought.com





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