old_contents: #!/usr/bin/env python
  
  from __future__ import absolute_import
  from __future__ import unicode_literals
  from setuptools import setup, find_packages
  from milestones import __version__ as VERSION
  
  setup(
      name='edx-milestones',
      version=VERSION,
      description='Significant events module for Open edX',
      long_description=open('README.md').read(),
      author='edX',
      url='https://github.com/edx/edx-milestones',
      license='AGPL',
      classifiers=[
          'Development Status :: 3 - Alpha',
          'Environment :: Web Environment',
          'Intended Audience :: Developers',
          'License :: OSI Approved :: GNU Affero General Public License v3',
          'Operating System :: OS Independent',
          'Programming Language :: Python',
          'Framework :: Django',
      ],
      packages=find_packages(exclude=["tests"]),
      install_requires=[
          "django>=1.8,<2.0",
          "django-model-utils",
          "edx-opaque-keys>=0.2.1,<1.0.0",
      ],
      tests_require=[
          "coverage==4.5.3",
          "nose==1.3.3",
          "httpretty==0.8.0",
          "pep8==1.5.7",
          "pylint==1.2.1",
          "pep257==0.3.2"
      ]
  )
  
new_contents: #!/usr/bin/env python
  
  from __future__ import absolute_import
  from __future__ import unicode_literals
  from setuptools import setup, find_packages
  from milestones import __version__ as VERSION
  
  setup(
      name='edx-milestones',
      version=VERSION,
      description='Significant events module for Open edX',
      long_description=open('README.md').read(),
      author='edX',
      url='https://github.com/edx/edx-milestones',
      license='AGPL',
      classifiers=[
          'Development Status :: 3 - Alpha',
          'Environment :: Web Environment',
          'Intended Audience :: Developers',
          'License :: OSI Approved :: GNU Affero General Public License v3',
          'Operating System :: OS Independent',
          'Programming Language :: Python',
          'Framework :: Django',
      ],
      packages=find_packages(exclude=["tests"]),
      install_requires=[
          "django>=1.8,<2.0",
          "django-model-utils",
          "edx-opaque-keys>=0.2.1,<1.0.0",
          "six",
      ],
      tests_require=[
          "coverage==4.5.3",
          "nose==1.3.3",
          "httpretty==0.8.0",
          "pep8==1.5.7",
          "pylint==1.2.1",
          "pep257==0.3.2"
      ]
  )
  
subject: Add six as a requirement.