Python declarative modules

declmod.py

import sys
import types


def module(cls):
    class tmp(cls, types.ModuleType):
        pass

    tmp.__name__ = cls.__name__
    instance = tmp(f"{cls.__module__}.{cls.__name__}")
    sys.modules[instance.__name__] = instance
    return instance

main.py

from mymod.a import CONST
from mymod.b import CONST as CONST2

print(CONST, CONST2)

mymod.py

from declmod import module


@module
class a:
    CONST = 1


@module
class b:
    CONST = 2