code: def __init__(self, host_mem, device_mem):
      self.host = host_mem
      self.device = device_mem
  
imports: import argparse
  import os
  import time
  import numpy
  import paddle
  import tensorrt
  import pycuda.driver
  import pycuda.autoinit
  import onnx
  import onnxruntime
  from paddleseg.cvlibs import Config, SegBuilder
  from paddleseg.utils import logger, utils
label_desc: Use image node_id 1 to create a new HostDeviceMem object from inherited base classes: object with example: obj = HostDeviceMem(host_mem, device_mem)