Create cli_demo.py

[ArtificialZeng]

几乎直接可运行的（改自己的权重路径就行）官方p tuning v2 命令行演示版本

[luckytalk]

我在docker中布署时报错：
Traceback (most recent call last):
File "/workspace/cli_demo.py", line 58, in
main()
File "/workspace/cli_demo.py", line 34, in main
query = input("\n用户：")
EOFError: EOF when reading a line
是怎么回事儿？