Doesn't find imports >= 5 levels deep

[CoenSchalkwijk]

linter-mypy v2.5.2, Atom 1.23.3, Python 3.5.2. In a file OtherClassName.py:

from A.B.C.D.E.className import ClassName

"Cannot find module" warning is issued. Moving ClassName to parent folder, adjusting import to:

from A.B.C.D.className import ClassName

No problem finding module.

Adding $PROJECT_PATH/A/B/C/D/E or dot to MyPy path does not help.

[CoenSchalkwijk]

Darnit: there was no

__init__.py

in the folder.... Adding this, solved the problem