[SciPy-Dev] Scipy Windows wheels

Thu Aug 24 19:49:33 EDT 2017

On Thu, Aug 24, 2017 at 6:56 PM, Pauli Virtanen <pav at iki.fi> wrote:

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> Dear all,
>
> Prerelease binary wheels for Scipy on Windows 32-bit & 64-bit are now
> available in case you would like to test them.
>
> Currently, the plans are that binary wheels will also be provided for
> future releases on PyPi, so that you will be able to do simply "pip
> install scipy" also on Windows. At least, assuming we manage to test
> these wheels well enough for which help would be useful.
>
> You can install the scipy prerelease packages as shown below. Note that
> they are meant for testing only, and correspond to the current Scipy
> development version. Please report issues found on the Scipy issue
> tracker on github (be sure to mention how you installed scipy and
> python).
>
> The wheels are meant to be used with the Python obtained from https://p
> ython.org --- these are not meant to be used with e.g. Conda, although
> it may be they work.
>

What's the numpy requirement?
I assume the scipy version should not be used with a currently installed
numpy unless it is Fortran compatible.
For example, Winpython distributes Gohlke's binaries build with MKL.
Is there an automatic check when not installing into an empty virtual
environment?

Josef

>
> The work leading to a viable automatized compilation approach was done
> in
> https://github.com/scipy/scipy/pull/7616
> https://github.com/numpy/numpy/pull/9431
>
> Example:
>
> C:\Users\pauli\src\env2\Scripts>pip install -f
> https://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a
> 83.ssl.cf2.rackcdn.com/ --pre scipy
> Collecting scipy
>   Downloading https://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a
> 83.ssl.cf2.rackcdn.com/scipy-1.0.0.dev0+20170824221943_
> 2a1fdcf-cp36-none-win32.whl (26.0MB)
>     100% |████████████████████████████████| 26.0MB 47kB/s
> Collecting numpy>=1.8.2 (from scipy)
>   Downloading https://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a
> 83.ssl.cf2.rackcdn.com/numpy-1.14.0.dev0+20170824081646_
> 707f33f-cp36-none-win32.whl (6.8MB)
>     100% |████████████████████████████████| 6.9MB 168kB/s
> Installing collected packages: numpy, scipy
> Successfully installed numpy-1.14.0.dev0+707f33f scipy-1.0.0.dev0+2a1fdcf
>
> C:\Users\pauli\src\env2\Scripts>python
> Python 3.6.2 (v3.6.2:5fd33b5, Jul  8 2017, 04:14:34) [MSC v.1900 32 bit
> (Intel)] on win32
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import scipy.integrate, scipy.linalg, numpy as np
> >>> scipy.integrate.quad(lambda x: 1/(1 + x**2), -np.inf, np.inf)
> (3.141592653589793, 5.155583041103855e-10)
> >>> scipy.linalg.eigvals([[1,0],[0,2]])
> array([ 1.+0.j,  2.+0.j])
> >>> exit()
>
> - --
> Pauli Virtanen
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