old_contents: """Setup script for MOSFiT."""
  import fnmatch
  import os
  import re
  
  from setuptools import find_packages, setup
  
  with open('requirements.txt') as f:
      required = f.read().splitlines()
  
  dir_path = os.path.dirname(os.path.realpath(__file__))
  
  init_string = open(os.path.join(dir_path, 'mosfit', '__init__.py')).read()
  VERS = r"^__version__ = ['\"]([^'\"]*)['\"]"
  mo = re.search(VERS, init_string, re.M)
  __version__ = mo.group(1)
  AUTH = r"^__author__ = ['\"]([^'\"]*)['\"]"
  mo = re.search(AUTH, init_string, re.M)
  __author__ = mo.group(1)
  LICE = r"^__license__ = ['\"]([^'\"]*)['\"]"
  mo = re.search(LICE, init_string, re.M)
  __license__ = mo.group(1)
  
  matches = []
  for root, dirnames, filenames in os.walk('mosfit'):
      for filename in fnmatch.filter(filenames, '*.pyx'):
          matches.append(os.path.join(root, filename))
  
  
  try:
      import pypandoc
      with open('README.md', 'r') as f:
          txt = f.read()
      txt = re.sub('<[^<]+>', '', txt)
      long_description = pypandoc.convert(txt, 'rst', 'md')
  except ImportError:
      long_description = open('README.md').read()
  
  setup(
      name='mosfit',
      packages=find_packages(),
      entry_points={'console_scripts': [
          'mosfit = mosfit.main:main'
      ]},
      include_package_data=True,
      version=__version__,  # noqa
      description=('Modular software for fitting '
                   'semi-analytical model predictions to observed '
                   'astronomical transient data.'),
      license=__license__,  # noqa
      author=__author__,  # noqa
      author_email='guillochon@gmail.com',
      install_requires=required,
      url='https://github.com/guillochon/mosfit',
      download_url=(
          'https://github.com/guillochon/mosfit/tarball/' + __version__),  # noqa
      keywords=['astronomy', 'fitting', 'monte carlo', 'modeling'],
      long_description=long_description,
      classifiers=[
          'Development Status :: 3 - Alpha',
          'License :: OSI Approved :: MIT License',
          'Natural Language :: English', 'Programming Language :: Python :: 3',
          'Programming Language :: Python :: 3 :: Only',
          'Topic :: Scientific/Engineering :: Astronomy',
          'Topic :: Scientific/Engineering :: Physics'
      ])
  
new_contents: """Setup script for MOSFiT."""
  import fnmatch
  import os
  import re
  
  from setuptools import find_packages, setup
  
  with open('requirements.txt') as f:
      required = f.read().splitlines()
  
  dir_path = os.path.dirname(os.path.realpath(__file__))
  
  init_string = open(os.path.join(dir_path, 'mosfit', '__init__.py')).read()
  VERS = r"^__version__ = ['\"]([^'\"]*)['\"]"
  mo = re.search(VERS, init_string, re.M)
  __version__ = mo.group(1)
  AUTH = r"^__author__ = ['\"]([^'\"]*)['\"]"
  mo = re.search(AUTH, init_string, re.M)
  __author__ = mo.group(1)
  LICE = r"^__license__ = ['\"]([^'\"]*)['\"]"
  mo = re.search(LICE, init_string, re.M)
  __license__ = mo.group(1)
  
  matches = []
  for root, dirnames, filenames in os.walk('mosfit'):
      for filename in fnmatch.filter(filenames, '*.pyx'):
          matches.append(os.path.join(root, filename))
  
  
  try:
      import pypandoc
      with open('README.md', 'r') as f:
          txt = f.read()
      txt = re.sub('<[^<]+>', '', txt)
      long_description = pypandoc.convert(txt, 'rst', 'md')
  except ImportError:
      long_description = open('README.md').read()
  
  setup(
      name='mosfit',
      packages=find_packages(),
      entry_points={'console_scripts': [
          'mosfit = mosfit.main:main'
      ]},
      include_package_data=True,
      version=__version__,  # noqa
      description=('Modular software for fitting '
                   'semi-analytical model predictions to observed '
                   'astronomical transient data.'),
      license=__license__,  # noqa
      author=__author__,  # noqa
      author_email='guillochon@gmail.com',
      install_requires=required,
      url='https://github.com/guillochon/mosfit',
      download_url=(
          'https://github.com/guillochon/mosfit/tarball/' + __version__),  # noqa
      keywords=['astronomy', 'fitting', 'monte carlo', 'modeling'],
      long_description=long_description,
      classifiers=[
          'Development Status :: 3 - Alpha',
          'License :: OSI Approved :: MIT License',
          'Natural Language :: English',
          'Programming Language :: Python :: 2.7',
          'Programming Language :: Python :: 3',
          'Topic :: Scientific/Engineering :: Astronomy',
          'Topic :: Scientific/Engineering :: Physics'
      ])
  
subject: update `setuptools` classifiers