[ctypes-users] Re: copying/slicing ctypes arrays, (c_ulong *n)()

[Florian S. <flo...@gm...>]

On Thu, 16 Dec 2004 09:55:09 +0100, Florian Schulze 
<flo...@gm...> wrote:

> On Wed, 15 Dec 2004 10:57:45 -0800, Ray Schumacher <rj...@bl...> 
> wrote:
>
>> At 06:31 PM 12/15/2004 +0100, Thomas Heller wrote:
>>> Should work, but builds a large temporary list.  Best would be to avoid
>>> temporary objects at all, like this (for memmove, you need the latest
>>> ctypes release) (I assume that it is possible to get the address of a
>>> numarray buffer in a similar way as is possible for a normal array
>>> instance):
>>
>> I'm not sure it will be able to work...
>> The closest thing to .buffer_info() for numarray-addressing seems to be 
>> info(), but it returns text:
>
> Try src._data (where src is a numarray.ArrayType, I don't know about 
> Numeric, but it should be similar), it's a Memory object which should be 
> able to function as a buffer.
>
> Regards,
> Florian Schulze

I posted some experiments on the numeric list, Ray asked the same question 
there and that forced me to try it out ;)

Regards,
Florian Schulze