[Python-Dev] __package__ attribute

[Andrew Svetlov]

What are expected values for module.__package__?
I see two different behaviors: importlib and standard python import.
importlib processes __package__ pretty simple and clean:
- for toplevel modules __package__ is empty string
- for packages it's package name
- for modules inside packages it's again package name

Standard import follows another strategy:
- it tries to setup __package__ only in case of relative import (see
first 'if' in import.c:get_parent)
- otherwise __package__ is untouched and None by default.

For me importlib's way is better.
I don't see any PEP specifying __package__ behavior.