Symbol not found: _PyBytes_Type error running nosetests about fastfm

[ibayer]

@colemast
You might miss the Python dev header. Would be sudo apt-get install build-essential python-dev python-setuptools on linux. I have pushed the OSX fixes to fastFM. I hope this helps to get more OSX user to try.

[colemast]

Thanks for the pointer - it was that. I had the Python dev header installed but as I am using Anaconda the setup.py was looking in the wrong place. I added /Users/colemast/anaconda/envs/fastfm/include/ into the include_dirs and it is all working now so I have a fully functioning OS X version.

Thanks so much for your work on this. I have used libFM for a while now, but to have it in my Python toolkit is awesome.

I'm happy to try and write up what I had to do to get this to work on OS X if you think that would be useful.

[ibayer]

@colemast
Sure, it would be great if you could improve the README. Just fork & edit or post you changes here. The missing Python dev headers effects all OS's and should probably be added in the build instructions.

[chunguo]

I'm having the same issue with cblas.h. I've tried adding the directory where it is located to the include_dirs section in the setup.py. But the compiler still complains that it cannot find cblas.h. Did I add it to the wrong place?

This is an exerpt from my modified setup.py:

ext_modules = [ Extension('ffm', ['fastFM/ffm.pyx'], libraries=['m', 'fastfm', 'cxsparse', 'blas'], library_dirs=['fastFM/', 'fastFM-core/bin/', 'fastFM-core/externals/CXSparse/Lib/'], include_dirs=['fastFM/', 'fastFM-core/include/', 'fastFM-core/externals/CXSparse/Include/', '/opt/pagerank/recommendation/anaconda2/include/', numpy.get_include()])]