old_contents: #!/usr/bin/env python
  
  from setuptools import setup, find_packages
  
  setup(name='redbot',
        version='1.1',
        description='Resource Expert Droid',
        author='Mark Nottingham',
        author_email='mnot@mnot.net',
        url='https://redbot.org/project/',
        packages=find_packages(),
        package_dir={'redbot': 'redbot'},
        scripts=['bin/redbot', 'bin/webui.py'],
        package_data={
          'redbot': ['assets/*.css', 'assets/*.js', 'assets/*.map', 'assets/icon/*', 'assets/logo/*']
        },
        install_requires=[
            'thor >= 0.3.4',
            'markdown >= 2.6.5'
        ],
        classifiers=[
          'Programming Language :: Python :: 3.5',
          'Development Status :: 4 - Beta',
          'Intended Audience :: Developers',
          'Intended Audience :: System Administrators',
          'Environment :: Web Environment',
          'Topic :: Internet :: WWW/HTTP',
          'Topic :: Software Development :: Testing',
          'Operating System :: Unix',
          'Operating System :: MacOS :: MacOS X',
          'License :: OSI Approved :: MIT License',
        ],
  )
  
new_contents: #!/usr/bin/env python
  
  from setuptools import setup, find_packages
  
  setup(name='redbot',
        version='1.1',
        description='Resource Expert Droid',
        author='Mark Nottingham',
        author_email='mnot@mnot.net',
        url='https://redbot.org/project/',
        packages=find_packages(),
        package_dir={'redbot': 'redbot'},
        scripts=['bin/redbot', 'bin/webui.py'],
        package_data={
          'redbot': ['assets/*.css', 'assets/*.js', 'assets/*.map', 'assets/icon/*', 'assets/logo/*']
        },
        install_requires=[
            'thor >= 0.3.4',
            'markdown >= 2.6.5'
        ],
        extras_require={
            'dev': [
                'mypy',
                'selenium'
            ]
        },
        classifiers=[
          'Programming Language :: Python :: 3.5',
          'Development Status :: 4 - Beta',
          'Intended Audience :: Developers',
          'Intended Audience :: System Administrators',
          'Environment :: Web Environment',
          'Topic :: Internet :: WWW/HTTP',
          'Topic :: Software Development :: Testing',
          'Operating System :: Unix',
          'Operating System :: MacOS :: MacOS X',
          'License :: OSI Approved :: MIT License',
        ],
  )
  
subject: add extras_require