old_contents: #!/usr/bin/env python
  """Installation script."""
  try:
      from setuptools import setup
  except ImportError:
      from distutils.core import setup
  import pydot
  
  
  setup(
      name='pydot',
      version=pydot.__version__,
      description='Python interface to Graphviz\'s Dot',
      author='Ero Carrera',
      author_email='ero@dkbza.org',
      maintainer='Ioannis Filippidis',
      maintainer_email='jfilippidis@gmail.com',
      url='https://github.com/erocarrera/pydot',
      license='MIT',
      keywords='graphviz dot graphs visualization',
      classifiers=[
          'Development Status :: 5 - Production/Stable',
          'Intended Audience :: Developers',
          'Intended Audience :: Science/Research',
          'License :: OSI Approved :: MIT License',
          'Natural Language :: English',
          'Operating System :: OS Independent',
          'Programming Language :: Python :: 2.7',
          'Programming Language :: Python :: 3',
          'Topic :: Scientific/Engineering :: Visualization',
          'Topic :: Software Development :: Libraries :: Python Modules'],
      long_description="\n".join(pydot.__doc__.split('\n')),
      py_modules=['pydot', 'dot_parser'],
      install_requires=['pyparsing>=2.1.4'],
      tests_require=['chardet'])
  
new_contents: #!/usr/bin/env python
  """Installation script."""
  try:
      from setuptools import setup
  except ImportError:
      from distutils.core import setup
  import pydot
  
  
  setup(
      name='pydot',
      version=pydot.__version__,
      description="Python interface to Graphviz's Dot",
      author='Ero Carrera',
      author_email='ero@dkbza.org',
      maintainer='Ioannis Filippidis',
      maintainer_email='jfilippidis@gmail.com',
      url='https://github.com/erocarrera/pydot',
      license='MIT',
      keywords='graphviz dot graphs visualization',
      classifiers=[
          'Development Status :: 5 - Production/Stable',
          'Intended Audience :: Developers',
          'Intended Audience :: Science/Research',
          'License :: OSI Approved :: MIT License',
          'Natural Language :: English',
          'Operating System :: OS Independent',
          'Programming Language :: Python :: 2.7',
          'Programming Language :: Python :: 3',
          'Topic :: Scientific/Engineering :: Visualization',
          'Topic :: Software Development :: Libraries :: Python Modules'],
      long_description="\n".join(pydot.__doc__.split('\n')),
      py_modules=['pydot', 'dot_parser'],
      install_requires=['pyparsing>=2.1.4'],
      tests_require=['chardet'])
  
subject: use `"` around string containing `'`