Hello, I am using centos7. I have both python 2.7 and 3.6 installed. Matplotlib is fine with python 2.7 but in python 3.6 it shows No module named 'matplotlib' I have tried uninstall and reinstall ...

As for the syntax errors, there are a couple of asyncio modules in pyzmq that only work on Python 3. There's no problem with them being present on Python 2, but they can't be imported.