old_contents: #!/usr/bin/env python
  
  from setuptools import setup, find_packages
  
  setup(
    name = "mmringbuffer",
    version = "0.0.1.dev0",
    description = "A memory-mapped ring buffer implementation in Python.",
    url = "https://github.com/whiskerlabs/mmringbuffer",
    author = "Evan Meagher",
    author_email = "evan@whiskerlabs.com",
    license = "MIT",
    packages = find_packages(),
  
    # See https://pypi.python.org/pypi?%3Aaction=list_classifiers
    classifiers = [
      # How mature is this project? Common values are
      #   3 - Alpha
      #   4 - Beta
      #   5 - Production/Stable
      "Development Status :: 3 - Alpha",
  
      "Intended Audience :: Developers",
      "License :: OSI Approved :: MIT License",
      "Operating System :: OS Independent",
      "Programming Language :: Python"
    ],
  
    keywords = "mmap memory mapped ring circular buffer",
  )
  
new_contents: #!/usr/bin/env python
  
  from setuptools import setup, find_packages
  
  setup(
    name = "mmringbuffer",
    version = "0.0.1.dev0",
    description = "A memory-mapped ring buffer implementation in Python.",
    url = "https://github.com/whiskerlabs/mmringbuffer",
    author = "Evan Meagher",
    author_email = "evan@whiskerlabs.com",
    license = "MIT",
    packages = find_packages(),
    tests_require = ["pytest>=2.7.1"],
  
    # See https://pypi.python.org/pypi?%3Aaction=list_classifiers
    classifiers = [
      # How mature is this project? Common values are
      #   3 - Alpha
      #   4 - Beta
      #   5 - Production/Stable
      "Development Status :: 3 - Alpha",
  
      "Intended Audience :: Developers",
      "License :: OSI Approved :: MIT License",
      "Operating System :: OS Independent",
      "Programming Language :: Python"
    ],
  
    keywords = "mmap memory mapped ring circular buffer",
  )
  
subject: Add pytest to tests_require in setup.py