old_contents: import numpy
  from distutils.core import setup
  from distutils.extension import Extension
  from Cython.Distutils import build_ext
  
  ext_modules = [Extension("exp.sandbox.predictors.TreeCriterion", ["exp/sandbox/predictors/TreeCriterion.pyx"]),
      Extension("exp.util.SparseUtilsCython", ["exp/util/SparseUtilsCython.pyx"], include_dirs=[numpy.get_include()]), 
  ]
  
  setup(
    name = 'Experimental',
    cmdclass = {'build_ext': build_ext},
    ext_modules = ext_modules
  )
new_contents: import numpy
  from distutils.core import setup
  from distutils.extension import Extension
  from Cython.Distutils import build_ext
  
  ext_modules = [Extension("exp.sandbox.predictors.TreeCriterion", ["exp/sandbox/predictors/TreeCriterion.pyx"]),
      Extension("exp.util.SparseUtilsCython", ["exp/util/SparseUtilsCython.pyx"], include_dirs=[numpy.get_include()]),
      Extension("exp.sandbox.recommendation.SGDNorm2RegCython", ["exp/sandbox/recommendation/SGDNorm2RegCython.pyx"], include_dirs=[numpy.get_include()]), 
  ]
  
  setup(
    name = 'Experimental',
    cmdclass = {'build_ext': build_ext},
    ext_modules = ext_modules
  )
  
subject: Include SGDNorm2RegCython