Installing python dependencies

[Sandwich2001]

When installing, it reports an error:

Installing python dependencies
ERROR: Could not find a version that satisfies the requirement pdb (from versions: none)
ERROR: No matching distribution found for pdb

and when using vim myfile.cpp it comes up with:

bash: /usr/bin/vim: /usr/bin/python: bad interpreter: No such file or directory

The README.md is rather, well- lacking information, what do we do?
thanks.