old_contents: import re
  
  from setuptools import setup
  
  
  def get_version(filename):
      with open(filename, 'r') as fp:
          contents = fp.read()
      return re.search(r"__version__ = ['\"]([^'\"]+)['\"]", contents).group(1)
  
  
  version = get_version('flake8_comprehensions.py')
  
  
  with open('README.rst', 'r') as readme_file:
      readme = readme_file.read()
  
  with open('HISTORY.rst', 'r') as history_file:
      history = history_file.read()
  
  setup(
      name='flake8-comprehensions',
      version=version,
      description='A flake8 plugin to help you write better list/set/dict '
                  'comprehensions.',
      long_description=readme + '\n\n' + history,
      author="Adam Johnson",
      author_email='me@adamj.eu',
      url='https://github.com/adamchainz/flake8-comprehensions',
      entry_points={
          'flake8.extension': [
              'C4 = flake8_comprehensions:ComprehensionChecker',
          ],
      },
      py_modules=['flake8_comprehensions'],
      include_package_data=True,
      install_requires=[
          'flake8!=3.2.0',
      ],
      python_requires='>=3.4',
      license="ISCL",
      zip_safe=False,
      keywords='flake8, comprehensions, list comprehension, set comprehension, '
               'dict comprehension',
      classifiers=[
          'Development Status :: 5 - Production/Stable',
          'Framework :: Flake8',
          'Intended Audience :: Developers',
          'License :: OSI Approved :: ISC License (ISCL)',
          'Natural Language :: English',
          'Programming Language :: Python :: 3',
          'Programming Language :: Python :: 3.4',
          'Programming Language :: Python :: 3.5',
          'Programming Language :: Python :: 3.6',
          'Programming Language :: Python :: 3.7',
      ],
  )
  
new_contents: import re
  
  from setuptools import setup
  
  
  def get_version(filename):
      with open(filename, 'r') as fp:
          contents = fp.read()
      return re.search(r"__version__ = ['\"]([^'\"]+)['\"]", contents).group(1)
  
  
  version = get_version('flake8_comprehensions.py')
  
  
  with open('README.rst', 'r') as readme_file:
      readme = readme_file.read()
  
  with open('HISTORY.rst', 'r') as history_file:
      history = history_file.read()
  
  setup(
      name='flake8-comprehensions',
      version=version,
      description='A flake8 plugin to help you write better list/set/dict '
                  'comprehensions.',
      long_description=readme + '\n\n' + history,
      author="Adam Johnson",
      author_email='me@adamj.eu',
      url='https://github.com/adamchainz/flake8-comprehensions',
      entry_points={
          'flake8.extension': [
              'C4 = flake8_comprehensions:ComprehensionChecker',
          ],
      },
      py_modules=['flake8_comprehensions'],
      include_package_data=True,
      install_requires=[
          'flake8!=3.2.0',
      ],
      python_requires='>=3.4',
      license="ISCL",
      zip_safe=False,
      keywords='flake8, comprehensions, list comprehension, set comprehension, '
               'dict comprehension',
      classifiers=[
          'Development Status :: 5 - Production/Stable',
          'Framework :: Flake8',
          'Intended Audience :: Developers',
          'License :: OSI Approved :: ISC License (ISCL)',
          'Natural Language :: English',
          'Programming Language :: Python :: 3',
          'Programming Language :: Python :: 3.4',
          'Programming Language :: Python :: 3.5',
          'Programming Language :: Python :: 3.6',
          'Programming Language :: Python :: 3.7',
          'Programming Language :: Python :: 3 :: Only',
      ],
  )
  
subject: Document project as Python 3 only (#146)