Where does brew on MACOS install ansible?

Hm. Recently i changed my dev OS from Ubuntu to MACOS. I installed ansible with:

brew install ansible

When i tried running my playbook.yml this was the error:

ERROR: Unable to find an inventory file, specify one with -i ?

Default dir of hosts is /usr/local/etc/ansible/hosts but no dirs at all from the brew side ;-(
So just create the dir with

mkdir -p /usr/local/etc/ansible/

and create a host file

vi /usr/local/etc/ansible/hosts

with the content of your inventory. For example:

localhost ansible_connection=local

[servers]
foo.example.com
bar.example.com

[dbservers]
one.example.com
two.example.com
three.example.com

Works?!