new_contents: # noinspection PyProtectedMember
  from logging import getLogger, basicConfig, debug, exception, INFO, _levelNames, root
  from logging.config import dictConfig
  
  from os import getenv
  from os.path import isfile
  from yaml import safe_load as load
  
  LOGGING_LEVELS = _levelNames
  
  BASE_CONFIGURATION = {
      'format': '[%(asctime)-15s] [%(name)s] %(message)s',
      'level': INFO,
  }
  
  basicConfig(**BASE_CONFIGURATION)
  
  
  class LoggingManager(object):
      CONFIGFILE_ENV_KEY = 'LOG_CFG'
  
      @classmethod
      def set_level(cls, level):
          """
          :raises: ValueError
          """
          level = level \
              if not isinstance(level, basestring) \
              else int(LOGGING_LEVELS.get(level.upper(), level))
  
          for handler in root.handlers:
              handler.setLevel(level)
  
          root.setLevel(level)
  
      @classmethod
      def load_config(cls, configfile='logging.yaml'):
          """
          :raises: ValueError
          """
          configfile = getenv(cls.CONFIGFILE_ENV_KEY, configfile)
          if isfile(configfile):
              with open(configfile, 'r') as cf:
                  # noinspection PyBroadException
                  try:
                      dictConfig(load(cf))
                  except ValueError:
                      debug('Learn to config foooo! Improper config at %s', configfile)
                  except Exception:
                      exception('Something went wrong while reading %s.', configfile)
          else:
              raise ValueError('Invalid configfile specified: {}'.format(configfile))
  
  
  class LoggedObject(object):
      def __new__(cls, *args, **kwargs):
          cls.logger = getLogger('{}.{}'.format(cls.__module__, cls.__name__))
          cls.logger.debug('Instantiating')
          return super(LoggedObject, cls).__new__(cls)
  
      def __enter__(self):
          self.logger.debug('Entering')
  
      def __exit__(self, exc_type, exc_val, exc_tb):
          self.logger.debug('Exiting')
  
subject: Add logging subpackage