old_contents: # This file is used to configure the behavior of pytest when using the Astropy
  # test infrastructure.
  
  from astropy.version import version as astropy_version
  if astropy_version < '3.0':
      # With older versions of Astropy, we actually need to import the pytest
      # plugins themselves in order to make them discoverable by pytest.
      from astropy.tests.pytest_plugins import *
  else:
      # As of Astropy 3.0, the pytest plugins provided by Astropy are
      # automatically made available when Astropy is installed. This means it's
      # not necessary to import them here, but we still need to import global
      # variables that are used for configuration.
      from astropy.tests.plugins.display import PYTEST_HEADER_MODULES, TESTED_VERSIONS
  
  from astropy.tests.helper import enable_deprecations_as_exceptions
  
  ## Uncomment the following line to treat all DeprecationWarnings as
  ## exceptions. For Astropy v2.0 or later, there are 2 additional keywords,
  ## as follow (although default should work for most cases).
  ## To ignore some packages that produce deprecation warnings on import
  ## (in addition to 'compiler', 'scipy', 'pygments', 'ipykernel', and
  ## 'setuptools'), add:
  ##     modules_to_ignore_on_import=['module_1', 'module_2']
  ## To ignore some specific deprecation warning messages for Python version
  ## MAJOR.MINOR or later, add:
  ##     warnings_to_ignore_by_pyver={(MAJOR, MINOR): ['Message to ignore']}
  # enable_deprecations_as_exceptions()
  
  # Uncomment and customize the following lines to add/remove entries from
  # the list of packages for which version numbers are displayed when running
  # the tests. Making it pass for KeyError is essential in some cases when
  # the package uses other astropy affiliated packages.
  try:
      PYTEST_HEADER_MODULES['Cython'] = 'Cython'    # noqa
      PYTEST_HEADER_MODULES['Astropy'] = 'astropy'    # noqa
      PYTEST_HEADER_MODULES['scikit-image'] = 'skimage'    # noqa
      PYTEST_HEADER_MODULES['scikit-learn'] = 'sklearn'    # noqa
      del PYTEST_HEADER_MODULES['h5py']    # noqa
      del PYTEST_HEADER_MODULES['Pandas']    # noqa
  except (NameError, KeyError):  # NameError is needed to support Astropy < 1.0
      pass
  
  # Uncomment the following lines to display the version number of the
  # package rather than the version number of Astropy in the top line when
  # running the tests.
  import os
  
  # This is to figure out the package version, rather than
  # using Astropy's
  try:
      from .version import version
  except ImportError:
      version = 'dev'
  
  try:
      packagename = os.path.basename(os.path.dirname(__file__))
      TESTED_VERSIONS[packagename] = version
  except NameError:   # Needed to support Astropy <= 1.0.0
      pass
  
new_contents: # This file is used to configure the behavior of pytest when using the Astropy
  # test infrastructure.
  
  from astropy.version import version as astropy_version
  if astropy_version < '3.0':
      # With older versions of Astropy, we actually need to import the pytest
      # plugins themselves in order to make them discoverable by pytest.
      from astropy.tests.pytest_plugins import *
  else:
      # As of Astropy 3.0, the pytest plugins provided by Astropy are
      # automatically made available when Astropy is installed. This means it's
      # not necessary to import them here, but we still need to import global
      # variables that are used for configuration.
      from astropy.tests.plugins.display import PYTEST_HEADER_MODULES, TESTED_VERSIONS
  
  from astropy.tests.helper import enable_deprecations_as_exceptions
  
  ## Uncomment the following line to treat all DeprecationWarnings as
  ## exceptions. For Astropy v2.0 or later, there are 2 additional keywords,
  ## as follow (although default should work for most cases).
  ## To ignore some packages that produce deprecation warnings on import
  ## (in addition to 'compiler', 'scipy', 'pygments', 'ipykernel', and
  ## 'setuptools'), add:
  ##     modules_to_ignore_on_import=['module_1', 'module_2']
  ## To ignore some specific deprecation warning messages for Python version
  ## MAJOR.MINOR or later, add:
  ##     warnings_to_ignore_by_pyver={(MAJOR, MINOR): ['Message to ignore']}
  enable_deprecations_as_exceptions()
  
  # Uncomment and customize the following lines to add/remove entries from
  # the list of packages for which version numbers are displayed when running
  # the tests. Making it pass for KeyError is essential in some cases when
  # the package uses other astropy affiliated packages.
  try:
      PYTEST_HEADER_MODULES['Cython'] = 'Cython'    # noqa
      PYTEST_HEADER_MODULES['Astropy'] = 'astropy'    # noqa
      PYTEST_HEADER_MODULES['scikit-image'] = 'skimage'    # noqa
      PYTEST_HEADER_MODULES['scikit-learn'] = 'sklearn'    # noqa
      del PYTEST_HEADER_MODULES['h5py']    # noqa
      del PYTEST_HEADER_MODULES['Pandas']    # noqa
  except (NameError, KeyError):  # NameError is needed to support Astropy < 1.0
      pass
  
  # Uncomment the following lines to display the version number of the
  # package rather than the version number of Astropy in the top line when
  # running the tests.
  import os
  
  # This is to figure out the package version, rather than
  # using Astropy's
  try:
      from .version import version
  except ImportError:
      version = 'dev'
  
  try:
      packagename = os.path.basename(os.path.dirname(__file__))
      TESTED_VERSIONS[packagename] = version
  except NameError:   # Needed to support Astropy <= 1.0.0
      pass
  
subject: Enable raising deprecations again