old_contents: from distutils.core import setup
  
  setup(
    name = 'depedit',
    packages = ['depedit'],
    version = '2.1.2',
    description = 'A simple configurable tool for manipulating dependency trees',
    author = 'Amir Zeldes',
    author_email = 'amir.zeldes@georgetown.edu',
    url = 'https://github.com/amir-zeldes/depedit', 
    license='Apache License, Version 2.0',
    download_url = 'https://github.com/amir-zeldes/depedit/releases/tag/2.1.2',
    keywords = ['NLP', 'parsing', 'syntax', 'dependencies', 'dependency', 'tree', 'treebank', 'conll', 'conllu', 'ud'],
    classifiers = ['Programming Language :: Python',
  'Programming Language :: Python :: 2',
  'Programming Language :: Python :: 3',
  'License :: OSI Approved :: Apache Software License',
  'Operating System :: OS Independent'],
  )
new_contents: from distutils.core import setup
  
  setup(
    name = 'depedit',
    packages = ['depedit'],
    version = '2.1.2',
    description = 'A simple configurable tool for manipulating dependency trees',
    author = 'Amir Zeldes',
    author_email = 'amir.zeldes@georgetown.edu',
    url = 'https://github.com/amir-zeldes/depedit', 
    install_requires=["six"],
    license='Apache License, Version 2.0',
    download_url = 'https://github.com/amir-zeldes/depedit/releases/tag/2.1.2',
    keywords = ['NLP', 'parsing', 'syntax', 'dependencies', 'dependency', 'tree', 'treebank', 'conll', 'conllu', 'ud'],
    classifiers = ['Programming Language :: Python',
  'Programming Language :: Python :: 2',
  'Programming Language :: Python :: 3',
  'License :: OSI Approved :: Apache Software License',
  'Operating System :: OS Independent'],
  )
  
subject: Add six as a requirement