Control module imports
Let's imagine following structure
project/
|_ main.py
|_ A
| |_ __init__.py
| |_ ClassA.py
|
|_ B
|_ __init.__.py
|_ ClassB.py
Empty __init__.py
This way, if you need to use both classes in __main__.py , you will need to import like this:
from A.ClassA import ClassA
from B.ClassB import ClassB
Importing name
Which can get redundant, so in A __init__.py we will do the following:
from .ClassA import ClassA
__all__ = ["ClassA"]
Now we can access this way:
main.py
from A import ClassA
Simple and direct to the point, you can repeat same for ClassB in its respective __init__.py
Customizing imported name
Note that __all__ should always be a list of strings with names that you've imported. If I would want to change imported name, I could:
__init.py__
from .ClassA import ClassA as CustomA
__all__ = ["CustomA"]
main.py
from A import CustomA