What is the network version？

[zws-2019]

Traceback (most recent call last):
File "main.py", line 9, in
import utils
File "/home/zhouwenshuo/workspace/domain_shift/nature/CoVi-master/utils.py", line 7, in
from network import models
ImportError: cannot import name 'models' from 'network' (/home/zhouwenshuo/anaconda3/envs/p38t/lib/python3.8/site-packages/network.py)`