I recieved a new laptop and the Python certificates were failing for me. The quickest, but not necessarily the most secure method for fixing this is to either use the –trusted-host entry for each host that throws a certificate exception or to create a file in the ~/.config/pip/pip.conf file like the one below. This covers the main sites that pip uses to install packages.

[global]
trusted-host = pypi.python.org
               pypi.org
               files.pythonhosted.org