old_contents: import os
  import re
  import sys
  from setuptools import setup, find_packages
  
  needs_pytest = {'pytest', 'test', 'ptr'}.intersection(sys.argv)
  pytest_runner = ['pytest-runner'] if needs_pytest else []
  
  
  def find_version(*paths):
      fname = os.path.join(*paths)
      with open(fname) as fhandler:
          version_file = fhandler.read()
          version_match = re.search(r"^__VERSION__ = ['\"]([^'\"]*)['\"]",
                                    version_file, re.M)
  
      if not version_match:
          raise RuntimeError("Unable to find version string in %s" % (fname,))
  
      version = version_match.group(1)
      return version
  
  
  version = find_version('pymesos', '__init__.py')
  
  setup(
      name='pymesos',
      version=version,
      description="A pure python implementation of Mesos scheduler and executor",
      packages=find_packages(),
      platforms=['POSIX'],
      classifiers=[
          'Intended Audience :: Developers',
          'License :: OSI Approved :: BSD License',
          'Operating System :: POSIX',
          'Programming Language :: Python',
      ],
      author="Zhongbo Tian",
      author_email="tianzhongbo@douban.com",
      url="https://github.com/douban/pymesos",
      download_url=(
          'https://github.com/douban/pymesos/archive/%s.tar.gz' % version
      ),
      install_requires=['six', 'http-parser', 'addict'],
      setup_requires=pytest_runner,
      tests_require=[
          'pytest-cov',
          'pytest-randomly',
          'pytest-mock',
          'pytest'],
  )
  
new_contents: import os
  import re
  import sys
  from setuptools import setup, find_packages
  
  needs_pytest = {'pytest', 'test', 'ptr'}.intersection(sys.argv)
  pytest_runner = ['pytest-runner'] if needs_pytest else []
  
  
  def find_version(*paths):
      fname = os.path.join(*paths)
      with open(fname) as fhandler:
          version_file = fhandler.read()
          version_match = re.search(r"^__VERSION__ = ['\"]([^'\"]*)['\"]",
                                    version_file, re.M)
  
      if not version_match:
          raise RuntimeError("Unable to find version string in %s" % (fname,))
  
      version = version_match.group(1)
      return version
  
  
  version = find_version('pymesos', '__init__.py')
  
  setup(
      name='pymesos',
      version=version,
      description="A pure python implementation of Mesos scheduler and executor",
      packages=find_packages(),
      platforms=['POSIX'],
      classifiers=[
          'Intended Audience :: Developers',
          'License :: OSI Approved :: BSD License',
          'Operating System :: POSIX',
          'Programming Language :: Python',
      ],
      author="Zhongbo Tian",
      author_email="tianzhongbo@douban.com",
      url="https://github.com/douban/pymesos",
      download_url=(
          'https://github.com/douban/pymesos/archive/%s.tar.gz' % version
      ),
      install_requires=['six', 'http-parser', 'addict', 'zkpython'],
      setup_requires=pytest_runner,
      tests_require=[
          'pytest-cov',
          'pytest-randomly',
          'pytest-mock',
          'pytest'],
  )
  
subject: Add `zkpython` to install requires