项目初次搭建

app/db/db_engine.py

@@ -0,0 +1,9 @@
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker, scoped_session
+from app.config.config_reader import database_url
+
+
+db_engine = create_engine(database_url, echo=True, echo_pool=True)
+
+db_session = sessionmaker(bind=db_engine, autoflush=False, autocommit=False, expire_on_commit=True)
+session = scoped_session(db_session)