1from sqlalchemy import create_engine 2from sqlalchemy.ext.declarative import declarative_base 3from sqlalchemy.orm import sessionmaker 4 5SQLALCHEMY_DATABASE_URL = "sqlite:///./sql_app.db" 6# SQLALCHEMY_DATABASE_URL = "postgresql://user:password@postgresserver/db" 7 8engine = create_engine( 9 SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False} 10) 11SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine) 12 13Base = declarative_base() 14