安装paramiko时遇到error in cryptography setup command: Invalid environment marker: python_version < '3'

https://github.com/ansible/ansible/issues/31741

根据这篇文章

2rs2ts commented on 19 Oct

I had the same problem in Debian Jessie. This is what I did to get it working for me: sudo pip install --upgrade setuptools sudo apt-get install libffi-dev libssl-dev After this I was able to install ansible (2.4.0.0)

解决