Code source de apptax.database
from os import environ
from importlib import import_module
from flask_sqlalchemy import SQLAlchemy
if db_path and db_path != f"{__name__}.db":
db_module_name, db_object_name = db_path.rsplit(".", 1)
db = getattr(db_module, db_object_name)
else:
db = SQLAlchemy()
environ["FLASK_SQLALCHEMY_DB"] = f"{__name__}.db"