Issue: Devices like Linux, Cisco, Dell were configured in more secure way. Telnet disabled. Lets change our management Python scrypts for SSH commutication.
First of all upgrade pip:
python -m pip install --upgrade pip
Install pycrypto
pip install pycrypto
Install Paramiko
pip install paramiko
Note: If you have 2 python versions 2.7 and 3.5, make sure are in correct directory before running installation.