root@zcf-ThinkCentre-M910t-N000:/home/zcf/Code/resnet50_acl_python_sample# python3 ./main.py 
init resource stage:
Traceback (most recent call last):
  File "/home/zcf/Code/resnet50_acl_python_sample/./main.py", line 242, in <module>
    main()
  File "/home/zcf/Code/resnet50_acl_python_sample/./main.py", line 224, in main
    net = Net(device, model_path, idx2label_list)  # 初始化模型
  File "/home/zcf/Code/resnet50_acl_python_sample/./main.py", line 26, in __init__
    self.init_resource()  # 初始化 acl 资源
  File "/home/zcf/Code/resnet50_acl_python_sample/./main.py", line 43, in init_resource
    check_ret("acl.mdl.load_from_file", ret)
  File "/home/zcf/Code/resnet50_acl_python_sample/./main.py", line 164, in check_ret
    raise Exception("{} failed ret={}".format(message, ret))
Exception: acl.mdl.load_from_file failed ret=207000