old_contents: from setuptools import setup, find_packages
  
  
  with open('README.rst') as readme_file:
      readme = readme_file.read()
  
  # requirements
  install_requires = set(x.strip() for x in open('requirements.txt'))
  install_requires_replacements = {
      'https://github.com/ethereum/ethash/tarball/master': 'pyethash',
      'git+https://github.com/ulope/secp256k1-py#egg=secp256k1': 'secp256k1'
  }
  install_requires = [install_requires_replacements.get(r, r) for r in install_requires]
  
  # dev requirements
  tests_require = set(x.strip() for x in open('dev_requirements.txt'))
  tests_require_replacements = {
      # 'https://github.com/ethereum/serpent/tarball/develop': 'ethereum-serpent>=1.8.1',
      # THIS SHOULD NOT BE MERGED
      'https://github.com/pipermerriam/serpent/tarball/piper/add-travis-ci-testing': 'ethereum-serpent>=1.8.1',
  }
  tests_require = [tests_require_replacements.get(r, r) for r in tests_require]
  
  # *IMPORTANT*: Don't manually change the version here. Use the 'bumpversion' utility.
  # see: https://github.com/ethereum/pyethapp/wiki/Development:-Versions-and-Releases
  version = '1.3.6'
  
  setup(
      name="ethereum",
      packages=find_packages("."),
      description='Next generation cryptocurrency network',
      long_description=readme,
      url='https://github.com/ethereum/pyethereum/',
      install_requires=install_requires,
      tests_require=tests_require,
      setup_requires=[
          'pytest-runner==2.7'
      ],
      dependency_links=[
          "https://github.com/ulope/secp256k1-py/archive/master.zip#egg=secp256k1-0.11.1"
      ],
      version=version,
  )
  
new_contents: from setuptools import setup, find_packages
  
  
  with open('README.rst') as readme_file:
      readme = readme_file.read()
  
  # requirements
  install_requires = set(x.strip() for x in open('requirements.txt'))
  install_requires_replacements = {
      'https://github.com/ethereum/ethash/tarball/master': 'pyethash',
      'git+https://github.com/ulope/secp256k1-py#egg=secp256k1': 'secp256k1'
  }
  install_requires = [install_requires_replacements.get(r, r) for r in install_requires]
  
  # dev requirements
  tests_require = set(x.strip() for x in open('dev_requirements.txt'))
  tests_require_replacements = {
      # 'https://github.com/ethereum/serpent/tarball/develop': 'ethereum-serpent>=1.8.1',
      # THIS SHOULD NOT BE MERGED
      'https://github.com/pipermerriam/serpent/tarball/piper/add-travis-ci-testing': 'ethereum-serpent>=1.8.1',
  }
  tests_require = [tests_require_replacements.get(r, r) for r in tests_require]
  
  # *IMPORTANT*: Don't manually change the version here. Use the 'bumpversion' utility.
  # see: https://github.com/ethereum/pyethapp/wiki/Development:-Versions-and-Releases
  version = '1.3.6'
  
  setup(
      name="ethereum",
      packages=find_packages("."),
      description='Next generation cryptocurrency network',
      long_description=readme,
      url='https://github.com/ethereum/pyethereum/',
      install_requires=install_requires,
      tests_require=tests_require,
      setup_requires=[
          'pytest-runner==2.7'
      ],
      dependency_links=[
          "https://github.com/ulope/secp256k1-py/archive/master.zip#egg=secp256k1-0.11.1"
      ],
      version=version,
      classifiers=[
          'Intended Audience :: Developers',
          'Natural Language :: English',
          'Programming Language :: Python :: 2',
          'Programming Language :: Python :: 2.7',
          'Programming Language :: Python :: 3',
          'Programming Language :: Python :: 3.3',
          'Programming Language :: Python :: 3.4',
      ],
  )
  
subject: add classifiers to setup.py