pip报错解决集锦

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