[Numpy-discussion] 1.10.0rc1

[Benjamin Root]

Just a data point, I just tested 1.9.0rc1 (built from source) with
matplotlib master, and things appear to be fine there. In fact, matplotlib
was built against 1.7.x (I was hunting down a regression), and worked
against the 1.9.0 install, so the ABI appears intact.

Cheers!
Ben Root

On Wed, Aug 26, 2015 at 9:52 AM, Charles R Harris <charlesr.harris at gmail.com
> wrote:

>
>
> On Wed, Aug 26, 2015 at 7:32 AM, Charles R Harris <
> charlesr.harris at gmail.com> wrote:
>
>>
>>
>> On Wed, Aug 26, 2015 at 7:31 AM, Charles R Harris <
>> charlesr.harris at gmail.com> wrote:
>>
>>>
>>>
>>> On Wed, Aug 26, 2015 at 7:11 AM, Antoine Pitrou <solipsis at pitrou.net>
>>> wrote:
>>>
>>>> On Tue, 25 Aug 2015 10:26:02 -0600
>>>> Charles R Harris <charlesr.harris at gmail.com> wrote:
>>>> > Hi All,
>>>> >
>>>> > The silence after the 1.10 beta has been eerie. Consequently, I'm
>>>> thinking
>>>> > of making a first release candidate this weekend. If you haven't yet
>>>> tested
>>>> > the beta, please do so. It would be good to discover as many problems
>>>> as we
>>>> > can before the first release.
>>>>
>>>> Has typing of ufunc parameters become much stricter? I can't find
>>>> anything in the release notes, but see (1.10b1):
>>>>
>>>> >>> arr = np.linspace(0, 5, 10)
>>>> >>> out = np.empty_like(arr, dtype=np.intp)
>>>> >>> np.round(arr, out=out)
>>>> Traceback (most recent call last):
>>>>   File "<stdin>", line 1, in <module>
>>>>   File
>>>> "/home/antoine/np110/lib/python3.4/site-packages/numpy/core/fromnumeric.py",
>>>> line 2778, in round_
>>>>     return round(decimals, out)
>>>> TypeError: ufunc 'rint' output (typecode 'd') could not be coerced to
>>>> provided output parameter (typecode 'l') according to the casting rule
>>>> ''same_kind''
>>>>
>>>>
>>>> It used to work (1.9):
>>>>
>>>> >>> arr = np.linspace(0, 5, 10)
>>>> >>> out = np.empty_like(arr, dtype=np.intp)
>>>> >>> np.round(arr, out=out)
>>>> array([0, 1, 1, 2, 2, 3, 3, 4, 4, 5])
>>>> >>> out
>>>> array([0, 1, 1, 2, 2, 3, 3, 4, 4, 5])
>>>>
>>>
>>> The default casting mode has been changed. I think this has been raising
>>> a warning since 1.7 and was mentioned as a future change in 1.10, but you
>>> are right, it needs to be mentioned in the 1.10  release notes.
>>>
>>
>> Make that warned of in the 1.9.0 release notes.
>>
>>
> Here it is in 1.9.0 with deprecation warning made visible.
> ```
> In [3]: import warnings
>
> In [4]: warnings.simplefilter('always')
>
> In [5]: arr = np.linspace(0, 5, 10)
>
> In [6]: out = np.empty_like(arr, dtype=np.intp)
>
> In [7]: np.round(arr, out=out)
> /home/charris/.local/lib/python2.7/site-packages/numpy/core/fromnumeric.py:2640:
> DeprecationWarning: Implicitly casting between incompatible kinds. In a
> future numpy release, this will raise an error. Use casting="unsafe" if
> this is intentional.
>   return round(decimals, out)
> Out[7]: array([0, 1, 1, 2, 2, 3, 3, 4, 4, 5])
> ```
>
> Chuck
>
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