old_contents: #!/usr/bin/env python
  
  import os
  
  from distutils.core import setup
  
  setup(
      name='yael',
      packages=['yael', 'yael.examples'],
      version='0.0.9',
      description='yael (Yet Another EPUB Library) is a Python library for reading, manipulating, and writing EPUB 2/3 files.',
      author='Alberto Pettarin',
      author_email='alberto@albertopettarin.it',
      url='https://github.com/pettarin/yael',
      license='MIT',
      long_description=open('README.txt').read(),
      keywords=['epub', 'yael', 'EPUB 2', 'EPUB 3'],
      install_requires='lxml >= 3.4.0, simplejson >= 3.6.0',
      classifiers=[
          "Development Status :: 2 - Pre-Alpha",
          "Environment :: Console",
          "Intended Audience :: Developers",
          "License :: OSI Approved :: MIT License",
          "Natural Language :: English",
          "Programming Language :: Python",
          "Topic :: Software Development :: Libraries :: Python Modules"
      ]
  )
  
new_contents: #!/usr/bin/env python
  
  import os
  
  from setuptools import setup
  
  setup(
      name='yael',
      packages=['yael', 'yael.examples'],
      version='0.0.9',
      description='yael (Yet Another EPUB Library) is a Python library for reading, manipulating, and writing EPUB 2/3 files.',
      author='Alberto Pettarin',
      author_email='alberto@albertopettarin.it',
      url='https://github.com/pettarin/yael',
      license='MIT',
      long_description=open('README.txt').read(),
      keywords=['epub', 'yael', 'EPUB 2', 'EPUB 3'],
      install_requires=['lxml >= 3.4.0', 'simplejson >= 3.6.0'],
      classifiers=[
          "Development Status :: 2 - Pre-Alpha",
          "Environment :: Console",
          "Intended Audience :: Developers",
          "License :: OSI Approved :: MIT License",
          "Natural Language :: English",
          "Programming Language :: Python",
          "Topic :: Software Development :: Libraries :: Python Modules"
      ]
  )
  
subject: Use setuptools instead of distutils because distutils doesn't have install_requires option.