To update this, some help from Python Discord has pyasn updated and pyOpenSSL is installed. But the same error as above still exists:

I have been learning Python recently and decided to default my Python install to 3.7 on my CentOS box. I didnt realise the complication's of this and have since changed the symbolic link back to 2.7 and all was seemingly fine. Yum works again as expected and I even reinstalled python 2.7 on my box t...