old_contents: from .exceptions import MBusFrameDecodeError, MBusFrameCRCError, FrameMismatch
  
  
  class TelegramACK(object):
      @staticmethod
      def parse(data):
          if data is None:
              raise MBusFrameDecodeError("Data is None")
  
          if data is not None and len(data) < 1:
              raise MBusFrameDecodeError("Invalid M-Bus length")
  
          if data[0] != 0xE5:
              raise FrameMismatch()
  
          return TelegramACK()
  
      def __init__(self, dbuf=None):
          self.type = 0xE5
          self.base_size = 1
  
new_contents: from .exceptions import MBusFrameDecodeError, MBusFrameCRCError, FrameMismatch
  
  
  class TelegramACK(object):
      @staticmethod
      def parse(data):
          if data is None:
              raise MBusFrameDecodeError("Data is None")
  
          if data is not None and len(data) < 1:
              raise MBusFrameDecodeError("Invalid M-Bus length")
  
          if data[0] != 0xE5:
              raise FrameMismatch()
  
          return TelegramACK()
  
      def __init__(self, dbuf=None):
          self.type = 0xE5
          self.base_size = 1
  
      def __len__(self):
         return 1
  
      def __iter__(self):
          yield 0xE5
  
subject: Support for writing this frame to serial port