ERROR: cryptography 2.9.2 has requirement cffi!=1.11.3,>=1.8, but you'll have cffi 1.6.0 which is incompatible.
pip install PyCrypto pip install paramiko
ERROR: Cannot uninstall 'requests'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
pip install --ignore-installed requests