text: import sys
  
  from setuptools import find_packages, setup
  
  CURRENT_PYTHON = sys.version_info[:2]
  REQUIRED_PYTHON = (3, 5)
  
  # This check and everything above must remain compatible with Python 2.7.
  if CURRENT_PYTHON < REQUIRED_PYTHON:
      sys.stderr.write("""
  ==========================
  Unsupported Python version
  ==========================
  This version of django-pgcrypto-fields requires Python {}.{}, but you're trying to
  install it on Python {}.{}.
  This may be because you are using a version of pip that doesn't
  understand the python_requires classifier. Make sure you
  have pip >= 9.0 and setuptools >= 24.2, then try again:
      $ python -m pip install --upgrade pip setuptools
      $ python -m pip install django-pgcrypto-fields
  """.format(*(REQUIRED_PYTHON + CURRENT_PYTHON)))
      sys.exit(1)
  
  
  with open('README.md') as readme_file:
      readme = readme_file.read()
  
  
  with open('CHANGELOG.md') as changelog_file:
      changelog = changelog_file.read()
  
  version = '2.5.1'
  
  setup(
      name='django-pgcrypto-fields',
      packages=find_packages(exclude=['tests']),
      include_package_data=True,
      version=version,
      python_requires='>={}.{}'.format(*REQUIRED_PYTHON),
      license='BSD',
      description='Encrypted fields for Django dealing with pgcrypto postgres extension.',
      long_description=readme + '\n\n' + changelog,
      long_description_content_type='text/markdown',
      classifiers=[
          'Development Status :: 5 - Production/Stable',
          'Framework :: Django',
          'Intended Audience :: Developers',
          'License :: OSI Approved :: BSD License',
          'Natural Language :: English',
          'Programming Language :: Python',
          'Programming Language :: Python :: 3',
          'Programming Language :: Python :: 3.5',
          'Programming Language :: Python :: 3.6',
          'Programming Language :: Python :: 3.7',
          'Programming Language :: Python :: 3 :: Only',
          'Topic :: Database',
          'Topic :: Security :: Cryptography',
      ],
      author='Incuna Ltd',
      author_email='admin@incuna.com',
      url='https://github.com/incuna/django-pgcrypto-fields',
      test_suite='tests',
  )
  