Solved by zahra in post #4 
              
              
                I removed torch and then install torch by the following command: 
pip3 install torch==1.2.0 torchvision==0.4.0 -f https://download.pytorch.org/whl/torch_stable.html

Now, I could import torch. Also, I could install matchzoo-py successfully but when I import torch and then import matchzoo, I receive …