[Numpy-discussion] Clarification sought on Scipy Numpy version requirements.

[Charles R Harris]

On Sun, Jun 21, 2015 at 9:57 AM, Ralf Gommers <ralf.gommers at gmail.com>
wrote:

>
>
> On Sun, Jun 21, 2015 at 5:45 PM, Charles R Harris <
> charlesr.harris at gmail.com> wrote:
>
>>
>>
>> On Sun, Jun 21, 2015 at 9:31 AM, Ralf Gommers <ralf.gommers at gmail.com>
>> wrote:
>>
>>>
>>>
>>> On Sun, Jun 21, 2015 at 5:13 PM, Charles R Harris <
>>> charlesr.harris at gmail.com> wrote:
>>>
>>>>
>>>>
>>>>
>>>> On Sun, Jun 21, 2015 at 7:14 AM, Ralf Gommers <ralf.gommers at gmail.com>
>>>> wrote:
>>>>
>>>>>
>>>>>
>>>>> On Fri, Jun 19, 2015 at 11:52 PM, Charles R Harris <
>>>>> charlesr.harris at gmail.com> wrote:
>>>>>
>>>>>>
>>>>>>
>>>>>> On Fri, Jun 19, 2015 at 3:05 PM, Sturla Molden <
>>>>>> sturla.molden at gmail.com> wrote:
>>>>>>
>>>>>>> Charles R Harris <charlesr.harris at gmail.com> wrote:
>>>>>>>
>>>>>>> > I'm looking to change some numpy deprecations into errors as well
>>>>>>> as remove
>>>>>>> > some deprecated functions. The problem I see is that
>>>>>>> > SciPy claims to support Numpy >= 1.5 and Numpy 1.5 is really,
>>>>>>> really, old.
>>>>>>> > So the question is, does "support" mean compiles with earlier
>>>>>>> versions
>>>>>>> > of Numpy ?
>>>>>>>
>>>>>>> It means there is a Travis CI build with NumPy 1.6.2. So any change
>>>>>>> to the
>>>>>>> SciPy source code must compile with NumPy 1.6 and any later version
>>>>>>> of
>>>>>>> NumPy.
>>>>>>>
>>>>>>> There is no Travis CI build with NumPy 1.5. I don't think we know
>>>>>>> for sure
>>>>>>> if it is really compatible with the current SciPy.
>>>>>>>
>>>>>>
>>>> There is still a reference to 1.5 in Scipy, I forget where.
>>>>
>>>
>>> In INSTALL.rst.txt, will fix that now.
>>>
>>>
>> Ralf, I cannot compile Scipy 0.13.3 on my system, it seems to fail here
>>
>> Error compiling Cython file:
>> ------------------------------------------------------------
>> ...
>> # and object. In this file, only NULL is passed to these parameters.
>> cdef extern from *:
>>     cnp.ndarray PyArray_CheckFromAny(object, void*, int, int, int, void*)
>>     cnp.ndarray PyArray_FromArray(cnp.ndarray, void*, int)
>>
>> from . cimport cython_blas as blas_pointers
>> ^
>> ------------------------------------------------------------
>>
>> _decomp_update.pyx:60:0: 'cython_blas.pxd' not found
>>
>>
>> Although it is hard to tell, the traceback doesn't give much useful
>> information. I suspect this is due to a cython version mismatch, as it
>> seems to be looking for cython_blas.pxd but only cython_blas.c is
>> available. Have you seen this before?
>>
>>
> That's code that was only introduced for 0.16.x; a ``git clean -xdf``
> should fix this for you.
>
> Next obstacle: I think it'll fail with Cython 0.22, you'll need a lower
> Cython version (probably around 0.19.x).
>
>
Looks like Scipy 0.13.3 is OK against master apart from a bunch of runtime
errors due to deprecation warnings, precision changes, TypeErrors due to
default casting rule changes, and new runtime warnings about empty slices.
I wouldn't recommend it for use with Numpy 1.10, but it is probably not
fatal to do so. Nothing changes with the deprecation removals added.

Chuck
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