old_contents: import logging
  
  import pika
  
  logger = logging.getLogger(__name__)
  
  
  class LazyBase(object):
  
      def __init__(self):
          self.real = None
  
      def __getattr__(self, item):
          if not self.is_open:
              self.open()
          return getattr(self.real, item)
  
      def __del__(self):
          self.close()
  
      def __enter__(self):
          yield self
  
      def __exit__(self, exc_type, exc_val, exc_tb):
          self.close()
  
      @property
      def is_open(self):
          return self.real is not None and self.real.is_open
  
      def open(self):
          assert not self.is_open
          if not issubclass(self.__class__, LazyBase):
              raise NotImplementedError
  
      def close(self):
          if self.real is not None:
              if not (self.real.is_closing or self.real.is_closed):
                  self.real.close()
                  logger.info('%r closed', self)
  
  
  class LazyConnection(LazyBase):
  
      def __init__(self,
                   host='localhost', port=5672, user='guest', password='guest'):
          super(LazyConnection, self).__init__()
          self.host = host
          self.port = port
          self.user = user
          self.password = password
  
      def open(self):
          super(LazyConnection, self).open()
          credentials = pika.PlainCredentials(self.user, self.password)
          parameters = pika.ConnectionParameters(
              host=self.host, port=self.port, credentials=credentials)
          self.real = pika.BlockingConnection(parameters)
          logger.info('Connected to RabbitMQ')
  
      def channel(self):
          return LazyChannel(self)
  
  
  class LazyChannel(LazyBase):
  
      def __init__(self, connection):
          super(LazyChannel, self).__init__()
          self.connection = connection
  
      def open(self):
          super(LazyChannel, self).open()
          if not self.connection.is_open:
              self.connection.open()
  
          self.real = self.connection.real.channel()
          logger.info('Connected to channel')
  
new_contents: import logging
  
  import pika
  
  logger = logging.getLogger(__name__)
  
  
  class LazyBase(object):
  
      def __init__(self):
          self.real = None
  
      def __getattr__(self, item):
          if not self.is_open:
              self.open()
          return getattr(self.real, item)
  
      def __del__(self):
          self.close()
  
      def __enter__(self):
          yield self
  
      def __exit__(self, exc_type, exc_val, exc_tb):
          self.close()
  
      @property
      def is_open(self):
          return self.real is not None and self.real.is_open
  
      def open(self):
          assert not self.is_open
          if not issubclass(self.__class__, LazyBase):
              raise NotImplementedError
  
      def close(self):
          if self.real is not None:
              if not (self.real.is_closing or self.real.is_closed):
                  self.real.close()
                  logger.info('%r closed', self)
  
  
  class LazyConnection(LazyBase):
  
      def __init__(self,
                   host='localhost', port=5672, user='guest', password='guest'):
          super(LazyConnection, self).__init__()
          self.host = host
          self.port = port
          self.user = user
          self.password = password
  
      def open(self):
          super(LazyConnection, self).open()
          credentials = pika.PlainCredentials(self.user, self.password)
          parameters = pika.ConnectionParameters(
              host=self.host, port=self.port, credentials=credentials,
              heartbeat_interval=24 * 60 * 60)
          self.real = pika.BlockingConnection(parameters)
          logger.info('Connected to RabbitMQ')
  
      def channel(self):
          return LazyChannel(self)
  
  
  class LazyChannel(LazyBase):
  
      def __init__(self, connection):
          super(LazyChannel, self).__init__()
          self.connection = connection
  
      def open(self):
          super(LazyChannel, self).open()
          if not self.connection.is_open:
              self.connection.open()
  
          self.real = self.connection.real.channel()
          logger.info('Connected to channel')
  
subject: increase heartbeat interval