old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  """"
  setup.py
  
  Note: Install ipython version based on python version.
        If python 2, install ipython 5.x (python2 is not supported in ipython 6.
  
  """
  import os
  import sys
  from os.path import exists
  from setuptools import setup
  
  import versioneer
  
  python_2 = sys.version_info[0] == 2
  def read(fname):
      with open(fname, 'rU' if python_2 else 'r') as fhandle:
          return fhandle.read()
  
  req_path = os.path.join(os.path.dirname('__file__'), 'requirements.txt')
  required = [req.strip() for req in read(req_path).splitlines() if req.strip()]
  
  test_req_path = os.path.join(os.path.dirname('__file__'), 'requirements-dev.txt')
  test_required = [req.strip() for req in read(test_req_path).splitlines() if req.strip()]
  extras_require = {
      "test": test_required
  }
  
  setup(name='papermill',
        version=versioneer.get_version(),
        cmdclass=versioneer.get_cmdclass(),
        description='Parametrize and Run Jupyter Notebooks',
        author='nteract contributors',
        author_email='jupyter@googlegroups.com',
        license='BSD',
        keywords="jupyter mapreduce",
        long_description=(open('README.rst').read() if exists('README.rst') else ''),
        url='https://github.com/nteract/papermill',
        packages=['papermill'],
        install_requires=required,
        extras_require=extras_require,
        entry_points={
                'console_scripts': [
                    'papermill = papermill.cli:papermill'
                ]
            }
        )
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  """"
  setup.py
  
  Note: Install ipython version based on python version.
        If python 2, install ipython 5.x (python2 is not supported in ipython 6.
  
  """
  from __future__ import print_function
  import os
  import sys
  from os.path import exists
  from setuptools import setup
  
  import versioneer
  
  python_2 = sys.version_info[0] == 2
  def read(fname):
      with open(fname, 'rU' if python_2 else 'r') as fhandle:
          return fhandle.read()
  
  req_path = os.path.join(os.path.dirname('__file__'), 'requirements.txt')
  required = [req.strip() for req in read(req_path).splitlines() if req.strip()]
  
  test_req_path = os.path.join(os.path.dirname('__file__'), 'requirements-dev.txt')
  test_required = [req.strip() for req in read(test_req_path).splitlines() if req.strip()]
  extras_require = {
      "test": test_required
  }
  
  pip_too_old = False
  pip_message = ''
  
  try:
      import pip
      pip_version = tuple([int(x) for x in pip.__version__.split('.')[:3]])
      pip_too_old = pip_version < (9, 0, 1)
      if pip_too_old :
          # pip is too old to handle IPython deps gracefully
          pip_message = 'Your pip version is out of date. Papermill requires pip >= 9.0.1. \n'\
          'pip {} detected. Please install pip >= 9.0.1.'.format(pip.__version__)
          print(error, file=sys.stderr)
          sys.exit(1)
  except ImportError:
          pip_message = 'No pip detected; we were unable to import pip. \n'\
          'To use papermill, please install pip >= 9.0.1.'
  except Exception:
      pass
  
  if pip_message:
      print(pip_message, file=sys.stderr)
      sys.exit(1)
  
  
  setup(name='papermill',
        version=versioneer.get_version(),
        cmdclass=versioneer.get_cmdclass(),
        description='Parametrize and Run Jupyter Notebooks',
        author='nteract contributors',
        author_email='jupyter@googlegroups.com',
        license='BSD',
        keywords="jupyter mapreduce",
        long_description=(open('README.rst').read() if exists('README.rst') else ''),
        url='https://github.com/nteract/papermill',
        packages=['papermill'],
        install_requires=required,
        extras_require=extras_require,
        entry_points={
                'console_scripts': [
                    'papermill = papermill.cli:papermill'
                ]
            }
        )
  
subject: add explicit check for pip version >= 9.0