text: #!/usr/bin/env python
  
  # Setup script for the `rotate-backups' package.
  #
  # Author: Peter Odding <peter@peterodding.com>
  # Last Change: February 18, 2020
  # URL: https://github.com/xolox/python-rotate-backups
  
  """
  Setup script for the ``rotate-backups`` package.
  
  **python setup.py install**
    Install from the working directory into the current Python environment.
  
  **python setup.py sdist**
    Build a source distribution archive.
  
  **python setup.py bdist_wheel**
    Build a wheel distribution archive.
  """
  
  # Standard library modules.
  import codecs
  import os
  import re
  
  # De-facto standard solution for Python packaging.
  from setuptools import find_packages, setup
  
  
  def get_contents(*args):
      """Get the contents of a file relative to the source distribution directory."""
      with codecs.open(get_absolute_path(*args), 'r', 'UTF-8') as handle:
          return handle.read()
  
  
  def get_version(*args):
      """Extract the version number from a Python module."""
      contents = get_contents(*args)
      metadata = dict(re.findall('__([a-z]+)__ = [\'"]([^\'"]+)', contents))
      return metadata['version']
  
  
  def get_requirements(*args):
      """Get requirements from pip requirement files."""
      requirements = set()
      with open(get_absolute_path(*args)) as handle:
          for line in handle:
              # Strip comments.
              line = re.sub(r'^#.*|\s#.*', '', line)
              # Ignore empty lines
              if line and not line.isspace():
                  requirements.add(re.sub(r'\s+', '', line))
      return sorted(requirements)
  
  
  def get_absolute_path(*args):
      """Transform relative pathnames into absolute pathnames."""
      return os.path.join(os.path.dirname(os.path.abspath(__file__)), *args)
  
  
  setup(name="rotate-backups",
        version=get_version('rotate_backups', '__init__.py'),
        description="Simple command line interface for backup rotation",
        long_description=get_contents('README.rst'),
        url='https://github.com/xolox/python-rotate-backups',
        author="Peter Odding",
        author_email='peter@peterodding.com',
        license='MIT',
        packages=find_packages(),
        entry_points=dict(console_scripts=[
            'rotate-backups = rotate_backups.cli:main',
        ]),
        install_requires=get_requirements('requirements.txt'),
        test_suite='rotate_backups.tests',
        python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*',
        classifiers=[
            'Development Status :: 5 - Production/Stable',
            'Environment :: Console',
            'Intended Audience :: Developers',
            'Intended Audience :: System Administrators',
            'License :: OSI Approved :: MIT License',
            'Operating System :: MacOS :: MacOS X',
            'Operating System :: POSIX',
            'Operating System :: POSIX :: Linux',
            'Operating System :: Unix',
            'Programming Language :: Python',
            'Programming Language :: Python :: 2',
            'Programming Language :: Python :: 2.7',
            'Programming Language :: Python :: 3',
            'Programming Language :: Python :: 3.5',
            'Programming Language :: Python :: 3.6',
            'Programming Language :: Python :: 3.7',
            'Programming Language :: Python :: 3.8',
            'Programming Language :: Python :: Implementation :: CPython',
            'Programming Language :: Python :: Implementation :: PyPy',
            'Topic :: Software Development :: Libraries :: Python Modules',
            'Topic :: Software Development',
            'Topic :: System :: Archiving :: Backup',
            'Topic :: System :: Systems Administration',
        ])
  