code: def fast_memory_load(self, addr, size, data_type, endness='Iend_LE'):
          
  
          if data_type is int:
              try:
                  return self.project.loader.memory.unpack_word(addr, size=size, endness=endness)
              except KeyError:
                  return None
  
          try:
              data = self.project.loader.memory.load(addr, size)
              if data_type is str:
                  return "".join(chr(i) for i in data)
              return data
          except KeyError:
              return None
docs: Load memory bytes from loader's memory backend.
  
          :param int addr:    The address to begin memory loading.
          :param int size:    Size in bytes.
          :param data_type:   Type of the data.
          :param str endness: Endianness of this memory load.
          :return:            Data read out of the memory.
          :rtype:             int or bytes or str or None