old_contents: import codecs
  import os
  import re
  import sys
  
  from setuptools import setup, find_packages
  
  
  here = os.path.abspath(os.path.dirname(__file__))
  
  
  # Read the version number from a source file.
  # Why read it, and not import?
  # see https://groups.google.com/d/topic/pypa-dev/0PkjVpcxTzQ/discussion
  def find_version(*file_paths):
      # Open in Latin-1 so that we avoid encoding errors.
      # Use codecs.open for Python 2 compatibility
      with codecs.open(os.path.join(here, *file_paths), 'r', 'latin1') as file:
          version_file = file.read()
  
      # The version line must have the form
      # __version__ = 'ver'
      version_match = re.search(r'^__version__ = [\'"]([^\'"]*)[\'"]',
                                version_file, re.M)
      if version_match:
          return version_match.group(1)
      raise RuntimeError('Unable to find version string.')
  
  
  def create_requirements():
      requirements = ['pyparsing>=2.0.1']
      if sys.version_info < (3, 4):
          requirements.append('enum34>=1.0')
      return requirements
  
  
  # Get the long description from the relevant file
  with codecs.open('README.rst', encoding='utf-8') as f:
      long_description = f.read()
  
  with codecs.open('AUTHORS.rst', encoding='utf-8') as f:
      authors = f.read()
  
  setup(
      name='rapt',
      version=find_version('rapt', '__init__.py'),
      description='Relational algebra parsing tools.',
      long_description='{desc}\n\n{authors}'.format(desc=long_description, authors=authors),
      url='https://github.com/pyrapt/rapt',
      author='RAPT Team',
      author_email='',
      license='MIT',
  
      classifiers=[
          'Development Status :: 5 - Production/Stable',
          'Intended Audience :: Developers',
          'Topic :: Education',
          'License :: OSI Approved :: MIT License',
          'Programming Language :: Python :: 3',
          'Programming Language :: Python :: 3.1',
          'Programming Language :: Python :: 3.2',
          'Programming Language :: Python :: 3.3',
          'Programming Language :: Python :: 3.4',
      ],
  
      keywords='"relational algebra" ra sql parsing pyparsing',
  
      packages=find_packages(exclude=['config', 'docs', 'tests*']),
      install_requires=create_requirements(),
  )
  
new_contents: import codecs
  import os
  import re
  import sys
  
  from setuptools import setup, find_packages
  
  
  here = os.path.abspath(os.path.dirname(__file__))
  
  
  # Read the version number from a source file.
  # Why read it, and not import?
  # see https://groups.google.com/d/topic/pypa-dev/0PkjVpcxTzQ/discussion
  def find_version(*file_paths):
      # Open in Latin-1 so that we avoid encoding errors.
      # Use codecs.open for Python 2 compatibility
      with codecs.open(os.path.join(here, *file_paths), 'r', 'latin1') as file:
          version_file = file.read()
  
      # The version line must have the form
      # __version__ = 'ver'
      version_match = re.search(r'^__version__ = [\'"]([^\'"]*)[\'"]',
                                version_file, re.M)
      if version_match:
          return version_match.group(1)
      raise RuntimeError('Unable to find version string.')
  
  
  def create_requirements():
      requirements = ['pyparsing>=2.0.1']
      if sys.version_info < (3, 4):
          requirements.append('enum34>=1.0')
      return requirements
  
  
  # Get the long description from the relevant file
  with codecs.open('README.rst', encoding='utf-8') as f:
      long_description = f.read()
  
  with codecs.open('AUTHORS.rst', encoding='utf-8') as f:
      authors = f.read()
  
  setup(
      name='rapt',
      version=find_version('rapt', '__init__.py'),
      description='Relational algebra parsing tools.',
      long_description='{desc}\n\n{authors}'.format(desc=long_description, authors=authors),
      url='https://github.com/pyrapt/rapt',
      author='RAPT Team',
      author_email='olessia.karpova@gmail.com',
      license='MIT',
  
      classifiers=[
          'Development Status :: 5 - Production/Stable',
          'Intended Audience :: Developers',
          'Topic :: Education',
          'License :: OSI Approved :: MIT License',
          'Programming Language :: Python :: 3',
          'Programming Language :: Python :: 3.1',
          'Programming Language :: Python :: 3.2',
          'Programming Language :: Python :: 3.3',
          'Programming Language :: Python :: 3.4',
      ],
  
      keywords='"relational algebra" ra sql parsing pyparsing',
  
      packages=find_packages(exclude=['config', 'docs', 'tests*']),
      install_requires=create_requirements(),
  )
  
subject: Add author email to setup.py.