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Mon Oct 30 22:26:02 CET 2006 · https://mail.python.org/pipermail/python-dev/2006-October/069669.html

Martin v. Löwis wrote:
> Josiah Carlson schrieb:
> 
>>One could also toss wxPython, VTK, or any one of the other GUI libraries
>>into the mix for visualizing those images, of which wxPython just
>>acquired no-copy display of PIL images, and being able to manipulate
>>them with numpy (of which some wxPython built in classes use numpy to
>>speed up manipulation) would be very useful.
> 
> 
> I'm doubtful that this PEP alone would allow zero-copy sharing of images
> for display. Often, the libraries need the data in a different format.
> So they need to copy, even if they could understand the other format.
> However, the PEP won't allow "understanding" the format. If I know I
> have an array of 4-byte values: which of them is R, G, B, and A?
> 

You give a name to the fields: 'R', 'G', 'B', and 'A'.


-Travis

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[Python-Dev] PEP: Adding data-type objects to Python