old_contents: #!/usr/bin/env python
  from __future__ import print_function
  """discretize
  
  Discretization tools for finite volume and inverse problems.
  """
  
  from setuptools import find_packages
  
  try:
      from numpy.distutils.core import setup
  except Exception:
      raise Exception(
          "Install requires numpy. "
          "If you use conda, `conda install numpy` "
          "or you can use pip, `pip install numpy`"
      )
  
  import os
  import sys
  import numpy
  
  
  CLASSIFIERS = [
      'Development Status :: 4 - Beta',
      'Intended Audience :: Developers',
      'Intended Audience :: Science/Research',
      'License :: OSI Approved :: MIT License',
      'Programming Language :: Python',
      'Topic :: Scientific/Engineering',
      'Topic :: Scientific/Engineering :: Mathematics',
      'Topic :: Scientific/Engineering :: Physics',
      'Operating System :: Microsoft :: Windows',
      'Operating System :: POSIX',
      'Operating System :: Unix',
      'Operating System :: MacOS',
      'Natural Language :: English',
  ]
  
  with open("README.rst") as f:
      LONG_DESCRIPTION = ''.join(f.readlines())
  
  
  def configuration(parent_package='', top_path=None):
      from numpy.distutils.misc_util import Configuration
  
      config = Configuration(None, parent_package, top_path)
      config.set_options(ignore_setup_xxx_py=True,
                         assume_default_configuration=True,
                         delegate_options_to_subpackages=True,
                         quiet=True)
  
      config.add_subpackage('discretize')
  
      return config
  
  setup(
      name="discretize",
      version="0.3.8",
      install_requires=[
          'numpy>=1.8',
          'scipy>=0.13',
          'cython>=0.2',
          'matplotlib>=1.3',
          'pymatsolver>=0.1.2',
          'properties[math]',
      ],
      author="SimPEG developers",
      author_email="rowanc1@gmail.com",
      description="Discretization tools for finite volume and inverse problems",
      long_description=LONG_DESCRIPTION,
      license="MIT",
      keywords="finite volume, discretization, pde, ode",
      url="http://simpeg.xyz/",
      download_url="http://github.com/simpeg/discretize",
      classifiers=CLASSIFIERS,
      platforms=["Windows", "Linux", "Solaris", "Mac OS-X", "Unix"],
      use_2to3=False,
      setup_requires=['numpy'],
      configuration=configuration
  )
  
new_contents: #!/usr/bin/env python
  from __future__ import print_function
  """discretize
  
  Discretization tools for finite volume and inverse problems.
  """
  
  from setuptools import find_packages
  
  try:
      from numpy.distutils.core import setup
  except Exception:
      raise Exception(
          "Install requires numpy. "
          "If you use conda, `conda install numpy` "
          "or you can use pip, `pip install numpy`"
      )
  
  import os
  import sys
  import numpy
  
  
  CLASSIFIERS = [
      'Development Status :: 4 - Beta',
      'Intended Audience :: Developers',
      'Intended Audience :: Science/Research',
      'License :: OSI Approved :: MIT License',
      'Programming Language :: Python',
      'Topic :: Scientific/Engineering',
      'Topic :: Scientific/Engineering :: Mathematics',
      'Topic :: Scientific/Engineering :: Physics',
      'Operating System :: Microsoft :: Windows',
      'Operating System :: POSIX',
      'Operating System :: Unix',
      'Operating System :: MacOS',
      'Natural Language :: English',
  ]
  
  with open("README.rst") as f:
      LONG_DESCRIPTION = ''.join(f.readlines())
  
  
  def configuration(parent_package='', top_path=None):
      from numpy.distutils.misc_util import Configuration
  
      config = Configuration(None, parent_package, top_path)
      config.set_options(ignore_setup_xxx_py=True,
                         assume_default_configuration=True,
                         delegate_options_to_subpackages=True,
                         quiet=True)
  
      config.add_subpackage('discretize')
  
      return config
  
  setup(
      name="discretize",
      version="0.3.8",
      install_requires=[
          'numpy>=1.8',
          'scipy>=0.13',
          'cython>=0.2',
          'matplotlib>=1.3',
          'pymatsolver>=0.1.2',
          'properties[math]',
      ],
      author="SimPEG developers",
      author_email="rowanc1@gmail.com",
      description="Discretization tools for finite volume and inverse problems",
      long_description=LONG_DESCRIPTION,
      license="MIT",
      keywords="finite volume, discretization, pde, ode",
      url="http://simpeg.xyz/",
      download_url="http://github.com/simpeg/discretize",
      classifiers=CLASSIFIERS,
      platforms=["Windows", "Linux", "Solaris", "Mac OS-X", "Unix"],
      use_2to3=False,
      setup_requires=['numpy', 'cython'],
      configuration=configuration
  )
  
subject: add cython to the setup_requires