Findout which one is the latest python ( 2.7 or 3.5 )
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Latest python on Centos 7: https://tecadmin.net/install-python-2-7-on-centos-rhel/
https://danieleriksson.net/2017/02/08/how-to-install-latest-python-on-centos/
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sudo pip install --upgrade pip
-pip
pip check
pip install --upgrade setuptools #sometime need to be updated!!!
or
pip3
Juniper: junos-eznc
sudo -H pip install git+https://github.com/Juniper/py-junos-eznc.git