1- Install the pyez module ( for python )
python -m pip install --upgrade pip
pip install junos-eznc
2- Under the python interpretor:
python
from jnpr.junos import Device
...
it has been successfully install:
C:\Users\jkriker\AppData\Local\Programs\Python\Python36\Lib\site-packages\jnpr\junos
C:\Users\jkriker\AppData\Local\Programs\Python\Python36\Lib\site-packages\jnpr\junos\op\roues.yml