python - Installing NumPy and SciPy on 64-bit Windows (with Pip)

Question

I found out that it's impossible to install NumPy/SciPy via installers on Windows 64-bit, that's only possible on 32-bit. Because I need more memory than a 32-bit installation gives me, I need the 64-bit version of everything.

I tried to install everything via Pip and most things worked. But when I came to SciPy, it complained about missing a Fortran compiler. So I installed Fortran via MinGW/MSYS. But you can't install SciPy right away after that, you need to reinstall NumPy. So I tried that, but now it doesn't work anymore via Pip nor via easy_install. Both give these errors:

• There are a lot of errors about LNK2019 and LNK1120,.
• I get a lot of errors in the range of C: C2065,C2054,C2085,C2143`, etc. They belong together I believe.
• There is no Fortran linker found, but I have no idea how to install that, can't find anything on it.
• And many more errors which are already out of the visible part of my cmd-windows...

• The fatal error is about LNK1120:

  buildlib.win-amd64-2.7 umpylinalglapack_lite.pyd : fatal error LNK1120: 7 unresolved externals error: Setup script exited with error: Command "C:UsersmeAppDataLocalProgramsCommonMicrosoftVisual C++ for Python9.0VCBinamd64link.exe /DLL /nologo /INCREMENTAL:NO /LIBPATH:C:BLAS /LIBPATH:C:Python27libs /LIBPATH:C:Python27PCbuildamd64 /LIBPATH:buildemp.win-amd64-2.7 lapack.lib blas.lib /EXPORT:initlapack_lite buildemp.win-amd64-2.7Release umpylinalglapack_litemodule.obj /OUT:buildlib.win-amd64-2.7 umpylinalglapack_lite.pyd /IMPLIB:buildemp.win-amd64-2.7Release umpylinalglapack_lite.lib /MANIFESTFILE:buildemp.win-amd64-2.7Release umpylinalglapack_lite.pyd.manifest" failed with exit status 1120

What is the correct way to install the 64-bit versions NumPy and SciPy on a 64-bit Windows machine? Did I miss anything? Do I need to specify something somewhere? There is no information for Windows on these problems that I can find, only for Linux or Mac OS X, but they don't help me as I can't use their commands.

Answer 1

You can install scipy and numpy using their wheels.

First install wheel package if it's already not there...

pip install wheel

Just select the package you want from http://www.lfd.uci.edu/~gohlke/pythonlibs/#scipy

Example: if you're running python3.5 32 bit on Windows choose scipy-0.18.1-cp35-cp35m-win_amd64.whl then it will automatically download.

Then go to the command line and change the directory to the downloads folder and install the above wheel using pip.

Example:

cd C:Users[user]Downloads
pip install scipy-0.18.1-cp35-cp35m-win_amd64.whl