old_contents: """This file contains your country package's metadata and dependencies."""
  
  from setuptools import find_packages, setup
  
  setup(
      name = "OpenFisca-Country-Template",
      version = "3.12.2",
      author = "OpenFisca Team",
      author_email = "contact@openfisca.org",
      classifiers = [
          "Development Status :: 5 - Production/Stable",
          "License :: OSI Approved :: GNU Affero General Public License v3",
          "Operating System :: POSIX",
          "Programming Language :: Python",
          "Topic :: Scientific/Engineering :: Information Analysis",
          ],
      description = "OpenFisca tax and benefit system for Country-Template",
      keywords = "benefit microsimulation social tax",
      license = "http://www.fsf.org/licensing/licenses/agpl-3.0.html",
      url = "https://github.com/openfisca/country-template",
      include_package_data = True,  # Will read MANIFEST.in
      data_files = [
          (
              "share/openfisca/openfisca-country-template",
              ["CHANGELOG.md", "LICENSE", "README.md"],
              ),
          ],
      install_requires = [
          "OpenFisca-Core[web-api] >= 35.0.0, < 36.0.0",
          ],
      extras_require = {
          "dev": [
              "autopep8 >= 1.5.4, < 2.0.0",
              "flake8 >= 3.8.0, < 4.0.0",
              "flake8-bugbear >= 20.1.0, < 21.0.0",
              "flake8-coding >= 1.3.0, < 2.0.0",
              "flake8-commas >= 2.0.0, < 3.0.0",
              "flake8-comprehensions >= 3.2.0, < 4.0.0",
              "flake8-docstrings >= 1.5.0, < 2.0.0",
              "flake8-import-order >= 0.18.0, < 1.0.0",
              "flake8-print >= 3.1.0, < 4.0.0",
              "flake8-quotes >= 3.2.0, < 4.0.0",
              "pylint >= 2.6.0, < 3.0.0",
              "pycodestyle >= 2.6.0, < 3.0.0",
              ],
          },
      packages = find_packages(),
      )
  
new_contents: """This file contains your country package's metadata and dependencies."""
  
  from setuptools import find_packages, setup
  
  setup(
      name = "OpenFisca-Country-Template",
      version = "3.12.2",
      author = "OpenFisca Team",
      author_email = "contact@openfisca.org",
      classifiers = [
          "Development Status :: 5 - Production/Stable",
          "License :: OSI Approved :: GNU Affero General Public License v3",
          "Operating System :: POSIX",
          "Programming Language :: Python",
          "Topic :: Scientific/Engineering :: Information Analysis",
          ],
      description = "OpenFisca tax and benefit system for Country-Template",
      keywords = "benefit microsimulation social tax",
      license = "http://www.fsf.org/licensing/licenses/agpl-3.0.html",
      url = "https://github.com/openfisca/country-template",
      include_package_data = True,  # Will read MANIFEST.in
      data_files = [
          (
              "share/openfisca/openfisca-country-template",
              ["CHANGELOG.md", "LICENSE", "README.md"],
              ),
          ],
      install_requires = [
          "OpenFisca-Core[web-api] >= 35.0.0, < 36.0.0",
          ],
      extras_require = {
          "dev": [
              "autopep8 >= 1.5.4, < 2.0.0",
              "flake8 >= 3.8.0, < 4.0.0",
              "flake8-bugbear >= 20.1.0, < 21.0.0",
              "flake8-builtins >= 1.5.0, < 2.0.0",
              "flake8-coding >= 1.3.0, < 2.0.0",
              "flake8-commas >= 2.0.0, < 3.0.0",
              "flake8-comprehensions >= 3.2.0, < 4.0.0",
              "flake8-docstrings >= 1.5.0, < 2.0.0",
              "flake8-import-order >= 0.18.0, < 1.0.0",
              "flake8-print >= 3.1.0, < 4.0.0",
              "flake8-quotes >= 3.2.0, < 4.0.0",
              "pylint >= 2.6.0, < 3.0.0",
              "pycodestyle >= 2.6.0, < 3.0.0",
              ],
          },
      packages = find_packages(),
      )
  
subject: Add flake8-builtins