[Numpy-discussion] numpy 2.0, what else to do?

Dag Sverre Seljebotn dagss@student.matnat.uio...
Sun Feb 14 06:07:47 CST 2010

Dag Sverre Seljebotn wrote:
> Pauli Virtanen wrote:
>> We will most likely have experimental py3 support in 2.0.
>> If you, or someone else wishes to help bringing 2.0 to fully work 
>> with Py3, now is a very good time to step up.
> ...
>> Finally, try to write some PEP 3118 using code, and check how it 
>> works. (You can use python >= 2.6 for this if you get numpy from the 
>> py3k branch.)
> At least parts of this last point should be easily done with all the 
> code out there using Cython and NumPy.
> If PEP 3118 is enabled in NumPy's ndarray, then Cython's 
> special-casing of NumPy should magically disappear (this can be 
> checked by putting a "raise AssertionError()" statement in 
> __getbuffer__ in Cython/Includes/numpy.pxd).
> Then, one can recompile any code using Cython and NumPy to at least 
> verify most basic functionality (access of basic types, structs/record 
> arrays, and different striding and ordering).
Even recompilation is only needed in order to raise that assertion 
error, I think. So once it is tested that things work, NumPy's PEP 3118 
support should be used instead of emulation by already compiled Cython  

Of course, that's never actually been tested.

Dag Sverre

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