old_contents: # Basic unittests to test functioning of module's top-level
  
  import subprocess
  
  import pkgutil
  
  import pytest
  
  import sklearn
  from sklearn.utils.testing import assert_equal
  
  __author__ = 'Yaroslav Halchenko'
  __license__ = 'BSD'
  
  
  try:
      from sklearn import *  # noqa
      _top_import_error = None
  except Exception as e:
      _top_import_error = e
  
  
  def test_import_skl():
      # Test either above import has failed for some reason
      # "import *" is discouraged outside of the module level, hence we
      # rely on setting up the variable above
      assert_equal(_top_import_error, None)
  
  
  def test_import_sklearn_no_warnings():
      # Test that importing scikit-learn main modules doesn't raise any warnings.
  
      try:
          pkgs = pkgutil.iter_modules(path=sklearn.__path__, prefix='sklearn.')
          import_modules = '; '.join(['import ' + modname
                                      for _, modname, _ in pkgs
                                      if (not modname.startswith('_') and
                                          # add deprecated top level modules
                                          # below to ignore them
                                          modname not in [])])
  
          message = subprocess.check_output(['python', '-Wdefault',
                                             '-c', import_modules],
                                            stderr=subprocess.STDOUT)
          message = message.decode("utf-8")
          message = '\n'.join([line for line in message.splitlines()
                               if not (
                                       # ignore ImportWarning due to Cython
                                       "ImportWarning" in line or
                                       # ignore DeprecationWarning due to pytest
                                       "pytest" in line or
                                       # ignore DeprecationWarnings due to
                                       # numpy.oldnumeric
                                       "oldnumeric" in line
                                       )])
          assert 'Warning' not in message
          assert 'Error' not in message
  
      except Exception as e:
          pytest.skip('soft-failed test_import_sklearn_no_warnings.\n'
                      ' %s, \n %s' % (e, message))
  
new_contents: # Basic unittests to test functioning of module's top-level
  
  from sklearn.utils.testing import assert_equal
  
  __author__ = 'Yaroslav Halchenko'
  __license__ = 'BSD'
  
  
  try:
      from sklearn import *  # noqa
      _top_import_error = None
  except Exception as e:
      _top_import_error = e
  
  
  def test_import_skl():
      # Test either above import has failed for some reason
      # "import *" is discouraged outside of the module level, hence we
      # rely on setting up the variable above
      assert_equal(_top_import_error, None)
  
subject: Remove test_import_sklearn_no_warnings (#12244)