title: Install OpenEXR for python with pip on Windows
body: <p>I am trying to install OpenEXR module for python using pip.</p>
  
  <pre><code>C:\Python27_64\Scripts\pip.exe install openexr
  </code></pre>
  
  <p>But I get the following error:</p>
  
  <pre><code>Collecting openexr
    Using cached OpenEXR-1.2.0.tar.gz
  Installing collected packages: openexr
    Running setup.py install for openexr ... error
      Complete output from command c:\python27_64\python.exe -u -c "import setuptools, tokenize;__file__='c:\\users\\tuket
  \\appdata\\local\\temp\\pip-build-r6zwty\\openexr\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().r
  eplace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record c:\users\tuket\appdata\local\temp
  \pip-lledgs-record\install-record.txt --single-version-externally-managed --compile:
      running install
      running build
      running build_py
      creating build
      creating build\lib.win-amd64-2.7
      copying Imath.py -&gt; build\lib.win-amd64-2.7
      running build_ext
      building 'OpenEXR' extension
      creating build\temp.win-amd64-2.7
      creating build\temp.win-amd64-2.7\Release
      C:\Users\tuket\AppData\Local\Programs\Common\Microsoft\Visual C++ for Python\9.0\VC\Bin\amd64\cl.exe /c /nologo /Ox
  /MD /W3 /GS- /DNDEBUG -I/usr/include/OpenEXR -I/usr/local/include/OpenEXR -I/opt/local/include/OpenEXR -Ic:\python27_64\
  include -Ic:\python27_64\PC /TpOpenEXR.cpp /Fobuild\temp.win-amd64-2.7\Release\OpenEXR.obj -g -DVERSION="1.2.0"
      cl : Command line warning D9002 : ignoring unknown option '-g'
      OpenEXR.cpp
      OpenEXR.cpp(9) : fatal error C1083: Cannot open include file: 'ImathBox.h': No such file or directory
      error: command 'C:\\Users\\tuket\\AppData\\Local\\Programs\\Common\\Microsoft\\Visual C++ for Python\\9.0\\VC\\Bin\\
  amd64\\cl.exe' failed with exit status 2
  
      ----------------------------------------
  Command "c:\python27_64\python.exe -u -c "import setuptools, tokenize;__file__='c:\\users\\tuket\\appdata\\local\\temp\\
  pip-build-r6zwty\\openexr\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.c
  lose();exec(compile(code, __file__, 'exec'))" install --record c:\users\tuket\appdata\local\temp\pip-lledgs-record\insta
  ll-record.txt --single-version-externally-managed --compile" failed with error code 1 in c:\users\tuket\appdata\local\te
  mp\pip-build-r6zwty\openexr\
  </code></pre>
  
  <p>Before getting this error I was asked to install <code>Microsoft Visual C++ Compiler for Python 2.7</code>. So I did, and that fixed the first error but I still have the error I'm showing you.</p>