old_contents: # -*- coding: utf-8 -*-
  import logging
  import socket
  
  
  class AddHostName(logging.Filter):
      """
      Add the %(hostname)s entry to log record, so that it can be included in the
      logs using a formatter
      """
      hostname = socket.gethostname()
  
      def filter(self, record):
          record.hostname = self.hostname
          return True
  
  
  class IgnoreIfContains(logging.Filter):
      """
      Ignore log record if message entry contains any substring set on
      log filter configuration.
      """
  
      def __init__(self, substrings=None):
          self.substrings = substrings or []
  
      def filter(self, record):
          message = record.getMessage()
  
          return not any([
              substring in message
              for substring in self.substrings
          ])
  
new_contents: # -*- coding: utf-8 -*-
  import logging
  import socket
  
  
  class AddHostName(logging.Filter):
      """
      Add the %(hostname)s entry to log record, so that it can be included in the
      logs using a formatter
      """
      hostname = socket.gethostname()
  
      def filter(self, record):
          record.hostname = self.hostname
          return True
  
  
  class IgnoreIfContains(logging.Filter):
      """
      Ignore log record if message entry contains any substring set on
      log filter configuration.
      """
  
      def __init__(self, substrings=None):
          self.substrings = substrings or []
  
      def filter(self, record):
          message = record.getMessage()
  
          return not any(
              substring in message
              for substring in self.substrings
          )
  
subject: Make code more pythonic