> Date: Fri, 25 Jul 2014 15:06:40 +0200
> From: Olivier Grisel <olivier.gri...@ensta.org>
> Subject: Re: [Numpy-discussion] change default integer from int32 to
> int64 on win64?
> To: Discussion of Numerical Python <numpy-discussion@scipy.org>
> Content-Type: text/plain; charset=UTF-8
>
> The dtype returned by np.where looks right (int64):
>
>>>> import platform
>>>> platform.architecture()
> ('64bit', 'WindowsPE')
>>>> import numpy as np
>>>> np.__version__
> '1.9.0b1'
>>>> a = np.zeros(10)
>>>> np.where(a == 0)
> (array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9], dtype=int64),)
Strange. In [1] we had to cast the result of np.where because it was
an array of long. I ran through the NumPy code, and I couldn't find
the flaw, but neither could I find a point in the history where it was
fixed.
[1]
https://github.com/scikit-learn/scikit-learn/commit/ebdeddbab1620c2473d04dc242d1e30684af9511
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