old_contents: import logging
  
  
  class Options(object):
      service = ''
      agent_host = ''
      agent_port = 0
      log_level = logging.ERROR
  
      def __init__(self, **kwds):
          self.__dict__.update(kwds)
  
new_contents: import logging
  
  
  class Options(object):
      service = ''
      agent_host = ''
      agent_port = 0
      log_level = logging.WARN
  
      def __init__(self, **kwds):
          self.__dict__.update(kwds)
  
subject: Switch default log level to WARN