[Python-Dev] PEP 461 Final?
stefan_ml at behnel.de
Sat Jan 18 08:26:09 CET 2014
Steven D'Aprano, 18.01.2014 02:27:
> On Fri, Jan 17, 2014 at 08:49:21AM -0800, Ethan Furman wrote:
>> %s is restricted in what it will accept::
>> - input type supports Py_buffer?
>> use it to collect the necessary bytes
> Can you give some examples of what types support Py_buffer? Presumably
> bytes. Anything else?
Lots of things: bytes, bytearray, memoryview, array.array, NumPy arrays,
just to name a few.
Basically anything that wants itself to be representable as a chunk of
memory with metadata. It's a very common thing in the Big Data department
(although many people wouldn't know that they're actually heavy users of
this protocol because they just use NumPy and/or Cython and don't look
under the hood).
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