old_contents: #!/usr/bin/env python
  
  import ast
  import os.path
  from setuptools import setup, find_packages
  
  class GetVersion(ast.NodeVisitor):
      def __init__(self, path):
          with open(path) as f:
              self.visit(ast.parse(f.read(), path))
  
      def visit_Assign(self, node):
          if any(target.id == 'VERSION' for target in node.targets):
              assert not hasattr(self, 'VERSION')
              self.VERSION = node.value.s
  
  this_directory = os.path.abspath(os.path.dirname(__file__))
  with open(os.path.join(this_directory, 'README.rst'), encoding='utf-8') as f:
      long_description = f.read()
  
  setup(
      name='django-bitfield',
      version=GetVersion(os.path.join(os.path.dirname(__file__), 'bitfield', '__init__.py')).VERSION,
      author='Disqus',
      author_email='opensource@disqus.com',
      url='https://github.com/disqus/django-bitfield',
      description='BitField in Django',
      long_description=long_description,
      long_description_content_type='text/x-rst',
      packages=find_packages(),
      zip_safe=False,
      install_requires=[
          'Django>=1.4.22',
          'six',
      ],
      extras_require={
          'tests': [
              'flake8',
              'mysqlclient',
              'psycopg2>=2.3',
              'pytest-django',
          ],
      },
      include_package_data=True,
      classifiers=[
          'Framework :: Django',
          'Intended Audience :: Developers',
          'Intended Audience :: System Administrators',
          'Operating System :: OS Independent',
          'Topic :: Software Development',
          "Programming Language :: Python",
          "Programming Language :: Python :: 2",
          "Programming Language :: Python :: 2.7",
          "Programming Language :: Python :: 3",
          "Programming Language :: Python :: 3.4",
          "Programming Language :: Python :: 3.5",
      ],
  )
  
new_contents: #!/usr/bin/env python
  
  import ast
  import os.path
  from setuptools import setup, find_packages
  
  class GetVersion(ast.NodeVisitor):
      def __init__(self, path):
          with open(path) as f:
              self.visit(ast.parse(f.read(), path))
  
      def visit_Assign(self, node):
          if any(target.id == 'VERSION' for target in node.targets):
              assert not hasattr(self, 'VERSION')
              self.VERSION = node.value.s
  
  this_directory = os.path.abspath(os.path.dirname(__file__))
  with open(os.path.join(this_directory, 'README.rst')) as f:
      long_description = f.read()
  
  setup(
      name='django-bitfield',
      version=GetVersion(os.path.join(os.path.dirname(__file__), 'bitfield', '__init__.py')).VERSION,
      author='Disqus',
      author_email='opensource@disqus.com',
      url='https://github.com/disqus/django-bitfield',
      description='BitField in Django',
      long_description=long_description,
      long_description_content_type='text/x-rst',
      packages=find_packages(),
      zip_safe=False,
      install_requires=[
          'Django>=1.4.22',
          'six',
      ],
      extras_require={
          'tests': [
              'flake8',
              'mysqlclient',
              'psycopg2>=2.3',
              'pytest-django',
          ],
      },
      include_package_data=True,
      classifiers=[
          'Framework :: Django',
          'Intended Audience :: Developers',
          'Intended Audience :: System Administrators',
          'Operating System :: OS Independent',
          'Topic :: Software Development',
          "Programming Language :: Python",
          "Programming Language :: Python :: 2",
          "Programming Language :: Python :: 2.7",
          "Programming Language :: Python :: 3",
          "Programming Language :: Python :: 3.4",
          "Programming Language :: Python :: 3.5",
      ],
  )
  
subject: Remove UTF-8 encoding argument.