old_contents: from __future__ import absolute_import
  from __future__ import unicode_literals
  
  import contextlib
  import io
  import os.path
  
  
  TESTING_DIR = os.path.abspath(os.path.dirname(__file__))
  
  
  @contextlib.contextmanager
  def cwd(path):
      pwd = os.getcwd()
      os.chdir(path)
      try:
          yield
      finally:
          os.chdir(pwd)
  
  
  def get_resource_path(path):
      return os.path.join(TESTING_DIR, 'resources', path)
  
  
  def write_file(filename, contents):
      """Hax because coveragepy chokes on nested context managers."""
      with io.open(filename, 'w') as file_obj:
          file_obj.write(contents)
  
new_contents: from __future__ import absolute_import
  from __future__ import unicode_literals
  
  import contextlib
  import io
  import os.path
  
  
  TESTING_DIR = os.path.abspath(os.path.dirname(__file__))
  
  
  @contextlib.contextmanager
  def cwd(path):
      pwd = os.getcwd()
      os.chdir(path)
      try:
          yield
      finally:
          os.chdir(pwd)
  
  
  def get_resource_path(path):
      return os.path.join(TESTING_DIR, 'resources', path)
  
  
  def write_file(filename, contents):
      """Hax because coveragepy chokes on nested context managers."""
      with io.open(filename, 'w', newline='') as file_obj:
          file_obj.write(contents)
  
subject: Use newline='' to avoid automatic newline translation