如何导入robot_interface包（v3.8.4 Aliengo SDK）

[kongshanpai01]

v3.8.4 Aliengo SDK编译完成后运行python的example文件（如example_walk.py），显示报错：
Traceback (most recent call last):
File "/home/kongshan-pai/unitree_legged_sdk-3.8.4/example_py/example_walk.py", line 11, in
import robot_interface as sdk
ImportError: libunitree_legged_sdk.so: cannot open shared object file: No such file or directory

似乎是libunitree_legged_sdk.so文件格式或路径的问题？请问应当如何配置