# yum install openssl
There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

   No module named yum

Please install a package which provides this module, or
verify that the module is installed correctly.

It's possible that the above module doesn't match the
current version of Python, which is:
2.7.6 (default, Oct 27 2018, 15:04:53) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-23)]

If you cannot solve this problem yourself, please go to 
the yum faq at:

“pythonのアップデートでyumが使えない” の続きを読む