How to install numpy with pip+mingw in windows? - windows

Question

I have got pip+mingw working in windows. I tested it with
pip install cython
and it works perfectly.
pip install numpy
fails however with a long list of error messages. What is the correct way to do this or should I give up trying with pip?
Downloading/unpacking numpy
Running setup.py egg_info for package numpy
non-existing path in 'numpy\\distutils': 'site.cfg'
F2PY Version 2
blas_opt_info:
blas_mkl_info:
libraries mkl,vml,guide not found in ['C:\\Python27\\lib', 'C:\\', 'C:\\Python27\\libs']
NOT AVAILABLE
atlas_blas_threads_info:
Setting PTATLAS=ATLAS
libraries ptf77blas,ptcblas,atlas not found in ['C:\\Python27\\lib', 'C:\\', 'C:\\Python27\\libs']
NOT AVAILABLE
atlas_blas_info:
libraries f77blas,cblas,atlas not found in ['C:\\Python27\\lib', 'C:\\', 'C:\\Python27\\libs']
NOT AVAILABLE
blas_info:
libraries blas not found in ['C:\\Python27\\lib', 'C:\\', 'C:\\Python27\\libs']
NOT AVAILABLE
blas_src_info:
NOT AVAILABLE
NOT AVAILABLE
lapack_opt_info:
lapack_mkl_info:
mkl_info:
libraries mkl,vml,guide not found in ['C:\\Python27\\lib', 'C:\\', 'C:\\Python27\\libs']
NOT AVAILABLE
NOT AVAILABLE
atlas_threads_info:
Setting PTATLAS=ATLAS
libraries ptf77blas,ptcblas,atlas not found in C:\Python27\lib
libraries lapack_atlas not found in C:\Python27\lib
libraries ptf77blas,ptcblas,atlas not found in C:\
libraries lapack_atlas not found in C:\
libraries ptf77blas,ptcblas,atlas not found in C:\Python27\libs
libraries lapack_atlas not found in C:\Python27\libs
numpy.distutils.system_info.atlas_threads_info
NOT AVAILABLE
atlas_info:
libraries f77blas,cblas,atlas not found in C:\Python27\lib
libraries lapack_atlas not found in C:\Python27\lib
libraries f77blas,cblas,atlas not found in C:\
libraries lapack_atlas not found in C:\
libraries f77blas,cblas,atlas not found in C:\Python27\libs
libraries lapack_atlas not found in C:\Python27\libs
numpy.distutils.system_info.atlas_info
NOT AVAILABLE
lapack_info:
libraries lapack not found in ['C:\\Python27\\lib', 'C:\\', 'C:\\Python27\\libs']
NOT AVAILABLE
lapack_src_info:
NOT AVAILABLE
NOT AVAILABLE
build_src
building py_modules sources
building library "npymath" sources
No module named msvccompiler in numpy.distutils; trying from distutils
Running from numpy source directory.
c:\users\marshall\appdata\local\temp\pip-build-marshall\numpy\numpy\distutils\system_info.py:1494: UserWarning:
Atlas (http://math-atlas.sourceforge.net/) libraries not found.
Directories to search for the libraries can be specified in the
numpy/distutils/site.cfg file (section [atlas]) or by setting
the ATLAS environment variable.
warnings.warn(AtlasNotFoundError.__doc__)
c:\users\marshall\appdata\local\temp\pip-build-marshall\numpy\numpy\distutils\system_info.py:1503: UserWarning:
Blas (http://www.netlib.org/blas/) libraries not found.
Directories to search for the libraries can be specified in the
numpy/distutils/site.cfg file (section [blas]) or by setting
the BLAS environment variable.
warnings.warn(BlasNotFoundError.__doc__)
c:\users\marshall\appdata\local\temp\pip-build-marshall\numpy\numpy\distutils\system_info.py:1506: UserWarning:
Blas (http://www.netlib.org/blas/) sources not found.
Directories to search for the sources can be specified in the
numpy/distutils/site.cfg file (section [blas_src]) or by setting
the BLAS_SRC environment variable.
warnings.warn(BlasSrcNotFoundError.__doc__)
c:\users\marshall\appdata\local\temp\pip-build-marshall\numpy\numpy\distutils\system_info.py:1408: UserWarning:
Atlas (http://math-atlas.sourceforge.net/) libraries not found.
Directories to search for the libraries can be specified in the
numpy/distutils/site.cfg file (section [atlas]) or by setting
the ATLAS environment variable.
warnings.warn(AtlasNotFoundError.__doc__)
c:\users\marshall\appdata\local\temp\pip-build-marshall\numpy\numpy\distutils\system_info.py:1419: UserWarning:
Lapack (http://www.netlib.org/lapack/) libraries not found.
Directories to search for the libraries can be specified in the
numpy/distutils/site.cfg file (section [lapack]) or by setting
the LAPACK environment variable.
warnings.warn(LapackNotFoundError.__doc__)
c:\users\marshall\appdata\local\temp\pip-build-marshall\numpy\numpy\distutils\system_info.py:1422: UserWarning:
Lapack (http://www.netlib.org/lapack/) sources not found.
Directories to search for the sources can be specified in the
numpy/distutils/site.cfg file (section [lapack_src]) or by setting
the LAPACK_SRC environment variable.
warnings.warn(LapackSrcNotFoundError.__doc__)
error: Unable to find vcvarsall.bat
Complete output from command python setup.py egg_info:
non-existing path in 'numpy\\distutils': 'site.cfg'
F2PY Version 2
blas_opt_info:
blas_mkl_info:
libraries mkl,vml,guide not found in ['C:\\Python27\\lib', 'C:\\', 'C:\\Python27\\libs']
NOT AVAILABLE
atlas_blas_threads_info:
Setting PTATLAS=ATLAS
libraries ptf77blas,ptcblas,atlas not found in ['C:\\Python27\\lib', 'C:\\', 'C:\\Python27\\libs']
NOT AVAILABLE
atlas_blas_info:
libraries f77blas,cblas,atlas not found in ['C:\\Python27\\lib', 'C:\\', 'C:\\Python27\\libs']
NOT AVAILABLE
blas_info:
libraries blas not found in ['C:\\Python27\\lib', 'C:\\', 'C:\\Python27\\libs']
NOT AVAILABLE
blas_src_info:
NOT AVAILABLE
NOT AVAILABLE
lapack_opt_info:
lapack_mkl_info:
mkl_info:
libraries mkl,vml,guide not found in ['C:\\Python27\\lib', 'C:\\', 'C:\\Python27\\libs']
NOT AVAILABLE
NOT AVAILABLE
atlas_threads_info:
Setting PTATLAS=ATLAS
libraries ptf77blas,ptcblas,atlas not found in C:\Python27\lib
libraries lapack_atlas not found in C:\Python27\lib
libraries ptf77blas,ptcblas,atlas not found in C:\
libraries lapack_atlas not found in C:\
libraries ptf77blas,ptcblas,atlas not found in C:\Python27\libs
libraries lapack_atlas not found in C:\Python27\libs
numpy.distutils.system_info.atlas_threads_info
NOT AVAILABLE
atlas_info:
libraries f77blas,cblas,atlas not found in C:\Python27\lib
libraries lapack_atlas not found in C:\Python27\lib
libraries f77blas,cblas,atlas not found in C:\
libraries lapack_atlas not found in C:\
libraries f77blas,cblas,atlas not found in C:\Python27\libs
libraries lapack_atlas not found in C:\Python27\libs
numpy.distutils.system_info.atlas_info
NOT AVAILABLE
lapack_info:
libraries lapack not found in ['C:\\Python27\\lib', 'C:\\', 'C:\\Python27\\libs']
NOT AVAILABLE
lapack_src_info:
NOT AVAILABLE
NOT AVAILABLE
running egg_info
running build_src
build_src
building py_modules sources
building library "npymath" sources
No module named msvccompiler in numpy.distutils; trying from distutils
Running from numpy source directory.
c:\users\marshall\appdata\local\temp\pip-build-marshall\numpy\numpy\distutils\system_info.py:1494: UserWarning:
Atlas (http://math-atlas.sourceforge.net/) libraries not found.
Directories to search for the libraries can be specified in the
numpy/distutils/site.cfg file (section [atlas]) or by setting
the ATLAS environment variable.
warnings.warn(AtlasNotFoundError.__doc__)
c:\users\marshall\appdata\local\temp\pip-build-marshall\numpy\numpy\distutils\system_info.py:1503: UserWarning:
Blas (http://www.netlib.org/blas/) libraries not found.
Directories to search for the libraries can be specified in the
numpy/distutils/site.cfg file (section [blas]) or by setting
the BLAS environment variable.
warnings.warn(BlasNotFoundError.__doc__)
c:\users\clifford\appdata\local\temp\pip-build-clifford\numpy\numpy\distutils\system_info.py:1506: UserWarning:
Blas (http://www.netlib.org/blas/) sources not found.
Directories to search for the sources can be specified in the
numpy/distutils/site.cfg file (section [blas_src]) or by setting
the BLAS_SRC environment variable.
warnings.warn(BlasSrcNotFoundError.__doc__)
c:\users\clifford\appdata\local\temp\pip-build-clifford\numpy\numpy\distutils\system_info.py:1408: UserWarning:
Atlas (http://math-atlas.sourceforge.net/) libraries not found.
Directories to search for the libraries can be specified in the
numpy/distutils/site.cfg file (section [atlas]) or by setting
the ATLAS environment variable.
warnings.warn(AtlasNotFoundError.__doc__)
c:\users\clifford\appdata\local\temp\pip-build-clifford\numpy\numpy\distutils\system_info.py:1419: UserWarning:
Lapack (http://www.netlib.org/lapack/) libraries not found.
Directories to search for the libraries can be specified in the
numpy/distutils/site.cfg file (section [lapack]) or by setting
the LAPACK environment variable.
warnings.warn(LapackNotFoundError.__doc__)
c:\users\clifford\appdata\local\temp\pip-build-clifford\numpy\numpy\distutils\system_info.py:1422: UserWarning:
Lapack (http://www.netlib.org/lapack/) sources not found.
Directories to search for the sources can be specified in the
numpy/distutils/site.cfg file (section [lapack_src]) or by setting
the LAPACK_SRC environment variable.
warnings.warn(LapackSrcNotFoundError.__doc__)
error: Unable to find vcvarsall.bat

Answer 1

pip is building Numpy from source and that's quite an undertaking. The failure at the end tells me that you may not have your compiler properly configured for distutils. I use the Windows SDK compiler myself: http://www.microsoft.com/en-us/download/details.aspx?id=8279
If you use this one, you should define the environment variables:
set MSSdk=1
set DISTUTILS_USE_SDK=1
Having said that, it's much easier to install Numpy and Scipy using one of the .msi installers which you can find here: http://scipy.org/Download.
Numpy relies on the BLAS linear algebra libraries and the build of those is highly technical and a build of Numpy from source on Windows is best avoided unless you have a good reason to do so.