text: import abc
  import logging
  
  
  class Processor(object):
      __metaclass__ = abc.ABCMeta
  
      def __init__(self, args, users, fo):
          self.logger = logging.getLogger('Processor')
          self.args = args
          self.users = users
          self.fo = fo
  
      @abc.abstractmethod
      def calibrate(self, est_dist):
          return
  