How WebUI uses modules without __init__.py

[CycloneRing]

Hey, This is not a real question about SD Webui but about it's development.
I'm trying to replicate the same python setup using python embed just like sd webui nvidia version.

I noticed in sd webui after running launch.py it directly import from modules folder but this folder is not inside sys.path nor PYTHONPATH but it works, in my replicate it doesn't
there's no __init__.py and not PYTHONPATH either, it just works...

In my case i get : ModuleNotFoundError: No module named 'modules'
my setup is exactly same as sd webui

anybody knows how they do it?

[CycloneRing]

Answer : Remove python310._pth