I have this known issue. So I try to fix it but I don't see where I have to create my ansible.cfg (or does it already exist)? I tried it in my homedirectory but it still did not work.
sudo vi ~/.ansible.cfg
I read a lot about /etc/ansible but on my system it isn't there.
I'm on Mac El Capitan. I've installed ansible by using pip.
ansible --version
ansible 1.9.4
configured module search path = None