old_contents: import sys
  
  import pytest
  
  
  pytest_plugins = 'setuptools.tests.fixtures'
  
  
  def pytest_addoption(parser):
      parser.addoption(
          "--package_name", action="append", default=[],
          help="list of package_name to pass to test functions",
      )
      parser.addoption(
          "--integration", action="store_true", default=False,
          help="run integration tests (only)"
      )
  
  
  def pytest_configure(config):
      config.addinivalue_line("markers", "integration: indicate integration tests")
  
  
  collect_ignore = [
      'tests/manual_test.py',
      'setuptools/tests/mod_with_constant.py',
      'setuptools/_distutils',
      '_distutils_hack',
      'setuptools/extern',
      'pkg_resources/extern',
      'pkg_resources/tests/data',
      'setuptools/_vendor',
      'pkg_resources/_vendor',
  ]
  
  
  if sys.version_info < (3, 6):
      collect_ignore.append('docs/conf.py')  # uses f-strings
      collect_ignore.append('pavement.py')
  
  
  @pytest.fixture(autouse=True)
  def _skip_integration(request):
      running_integration_tests = request.config.getoption("--integration")
      is_integration_test = request.node.get_closest_marker("integration")
      if running_integration_tests and not is_integration_test:
          pytest.skip("running integration tests only")
      if not running_integration_tests and is_integration_test:
          pytest.skip("skipping integration tests")
  
new_contents: import sys
  
  import pytest
  
  
  pytest_plugins = 'setuptools.tests.fixtures'
  
  
  def pytest_addoption(parser):
      parser.addoption(
          "--package_name", action="append", default=[],
          help="list of package_name to pass to test functions",
      )
      parser.addoption(
          "--integration", action="store_true", default=False,
          help="run integration tests (only)"
      )
  
  
  def pytest_configure(config):
      config.addinivalue_line("markers", "integration: integration tests")
  
  
  collect_ignore = [
      'tests/manual_test.py',
      'setuptools/tests/mod_with_constant.py',
      'setuptools/_distutils',
      '_distutils_hack',
      'setuptools/extern',
      'pkg_resources/extern',
      'pkg_resources/tests/data',
      'setuptools/_vendor',
      'pkg_resources/_vendor',
  ]
  
  
  if sys.version_info < (3, 6):
      collect_ignore.append('docs/conf.py')  # uses f-strings
      collect_ignore.append('pavement.py')
  
  
  @pytest.fixture(autouse=True)
  def _skip_integration(request):
      running_integration_tests = request.config.getoption("--integration")
      is_integration_test = request.node.get_closest_marker("integration")
      if running_integration_tests and not is_integration_test:
          pytest.skip("running integration tests only")
      if not running_integration_tests and is_integration_test:
          pytest.skip("skipping integration tests")
  
subject: Fix flake8 errors for conftest.py