You could also use

! pip install D:\_devs\Python01\scikit_learn\sklearn

or indeed

! pip install git+https://github.com/scikit-learn/scikit-learn/

if you don't actually want to use the directory with the source code in it.

On 22 August 2016 at 19:43, Olivier Grisel <olivier.grisel@ensta.org> wrote:
The error message mentions gcc. Have you installed some mingw version?

As of now our windows build is only properly tested with the Visual
Studio C++ compiler from appveyor:

https://ci.appveyor.com/project/sklearn-ci/scikit-learn

I have not tested the build with mingwpy in a while (I am not a
windows user my-self).

The file not found error makes me think that you might need to cd into
the scikit-learn source folder:

!!cd D:\_devs\Python01\scikit_learn\sklearn
!!python setup.py build_ext --inplace

--
Olivier
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