old_contents: from checkio_referee import RefereeBase
  from checkio_referee.covercode import py_2_str
  
  import settings
  import settings_env
  from tests import TESTS
  
  
  class Referee(RefereeBase):
      TESTS = TESTS
      EXECUTABLE_PATH = settings.EXECUTABLE_PATH
      CURRENT_ENV = settings_env.CURRENT_ENV
      FUNCTION_NAME = "clock_angle"
      ENV_COVERCODE = {
          "python_2": py_2_str,
          "python_3": None,
          "javascript": None
      }
  
new_contents: from checkio_referee import RefereeBase
  from checkio_referee import covercodes
  
  import settings
  import settings_env
  from tests import TESTS
  
  
  class Referee(RefereeBase):
      TESTS = TESTS
      EXECUTABLE_PATH = settings.EXECUTABLE_PATH
      CURRENT_ENV = settings_env.CURRENT_ENV
      FUNCTION_NAME = "clock_angle"
      ENV_COVERCODE = {
          "python_2": covercodes.py_2_str,
          "python_3": None,
          "javascript": None
      }
  
subject: add representation