Mark Dickinson, 05.01.2011 13:55:
On Wed, Jan 5, 2011 at 12:31 PM, Nick Coghlan wrote:
Currently [1], the implementation and the documentation for PEP 3118's
Py_buffer struct don't line up (there's an extra field in the
implementation that the PEP doesn't mention).

I think there are actually two such fields:  smalltable and obj.

The need for obj is a little ugly:  as far as I can tell, it's
meaningless for a 3rd-party object that wants to export buffers---it's
only really used by the memoryview object and by internal Python
types.

Not at all. It's the reason why some of the buffer API functions could be changed to a simpler signature after earlier versions of the PEP had been written.

Stefan

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