How to use the root package in an import?

Taking the Ansible project as an example, there is, inside the lib/ansible root directory, many other packages, like this

ansible/cli

       /errors

       /...many omitted for brevity

       /utils

       /vars

       __init__.py

As an example, from , the imports start at the root ansible/lib directory, such as

   from ansible.errors import AnsibleError

and

from ansible.errors import AnsibleError

rather than

from errors import AnsibleError etc.

I have a demo project with a directory structure like this

beatles/george/harrison.py

       /george/__init__.py

       /john/lennon.py

       /john/__init__.py

       /ringo/starr.py

       /ringo/__init__.py

       /paul/mccartney.py

       /paul/__init__.py

       __init__.py (this __init__.py file is in the beatles dir)

       helpers.py

So, using the Ansible example, I tried (in file ) to do

from beatles.george.harrison import Guitar

but I get an error `No module named beatles.george.harrison

However, the code works fine if I omit the package (the equivalent of ansible in the ansible project)

from george.harrison import Guitar

How come, with my directory structure, I am not able to code the import as

from beatles.george.harrison import Guitar

from the beatles/john/lennon.py file? If possible, please explain with reference to the ansible project so it's clear why it works in one situation but not the other.

>>> from beatles.john.lennon import Guitar Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: No module named beatles.john.lennon 

>>> from john.lennon import Guitar >>> Guitar <class 'john.lennon.Guitar'>