old_contents: #!/usr/bin/env python
  #
  # Copyright 2013 Quantopian, Inc.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  import sys
  
  from setuptools import setup, find_packages
  
  LONG_DESCRIPTION = None
  README_MARKDOWN = None
  
  with open('README.md') as markdown_source:
      README_MARKDOWN = markdown_source.read()
  
  if 'upload' in sys.argv:
      # Converts the README.md file to ReST, since PyPI uses ReST for formatting,
      # This allows to have one canonical README file, being the README.md
      # The conversion only needs to be done on upload.
      # Otherwise, the pandoc import and errors that are thrown when
      # pandoc are both overhead and a source of confusion for general
      # usage/installation.
      import pandoc
      pandoc.core.PANDOC_PATH = 'pandoc'
      doc = pandoc.Document()
      doc.markdown = README_MARKDOWN
      LONG_DESCRIPTION = doc.rst
  else:
      # If pandoc isn't installed, e.g. when downloading from pip,
      # just use the regular README.
      LONG_DESCRIPTION = README_MARKDOWN
  
  setup(
      name='zipline',
      version='0.6.0',
      description='A backtester for financial algorithms.',
      author='Quantopian Inc.',
      author_email='opensource@quantopian.com',
      packages=find_packages(),
      long_description=LONG_DESCRIPTION,
      license='Apache 2.0',
      classifiers=[
          'Development Status :: 4 - Beta',
          'License :: OSI Approved :: Apache Software License',
          'Natural Language :: English',
          'Programming Language :: Python',
          'Programming Language :: Python :: 2.7',
          'Operating System :: OS Independent',
          'Intended Audience :: Science/Research',
          'Topic :: Office/Business :: Financial',
          'Topic :: Scientific/Engineering :: Information Analysis',
          'Topic :: System :: Distributed Computing',
      ],
      install_requires=[
          'iso8601',
          'Logbook',
          'pytz',
          'requests',
          'numpy',
          'pandas'
      ],
      url="https://github.com/quantopian/zipline"
  )
  
new_contents: #!/usr/bin/env python
  #
  # Copyright 2013 Quantopian, Inc.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  import sys
  
  from setuptools import setup, find_packages
  
  LONG_DESCRIPTION = None
  README_MARKDOWN = None
  
  with open('README.md') as markdown_source:
      README_MARKDOWN = markdown_source.read()
  
  if 'upload' in sys.argv:
      # Converts the README.md file to ReST, since PyPI uses ReST for formatting,
      # This allows to have one canonical README file, being the README.md
      # The conversion only needs to be done on upload.
      # Otherwise, the pandoc import and errors that are thrown when
      # pandoc are both overhead and a source of confusion for general
      # usage/installation.
      import pandoc
      pandoc.core.PANDOC_PATH = 'pandoc'
      doc = pandoc.Document()
      doc.markdown = README_MARKDOWN
      LONG_DESCRIPTION = doc.rst
  else:
      # If pandoc isn't installed, e.g. when downloading from pip,
      # just use the regular README.
      LONG_DESCRIPTION = README_MARKDOWN
  
  setup(
      name='zipline',
      version='0.6.0',
      description='A backtester for financial algorithms.',
      author='Quantopian Inc.',
      author_email='opensource@quantopian.com',
      packages=find_packages(),
      long_description=LONG_DESCRIPTION,
      license='Apache 2.0',
      classifiers=[
          'Development Status :: 4 - Beta',
          'License :: OSI Approved :: Apache Software License',
          'Natural Language :: English',
          'Programming Language :: Python',
          'Programming Language :: Python :: 2.7',
          'Programming Language :: Python :: 3.3',
          'Operating System :: OS Independent',
          'Intended Audience :: Science/Research',
          'Topic :: Office/Business :: Financial',
          'Topic :: Scientific/Engineering :: Information Analysis',
          'Topic :: System :: Distributed Computing',
      ],
      install_requires=[
          'iso8601',
          'Logbook',
          'pytz',
          'requests',
          'numpy',
          'pandas'
      ],
      url="https://github.com/quantopian/zipline"
  )
  
subject: Add Python 3 to PyPI classifiers.