import os from sqlalchemy import create_engine from sqlalchemy.orm import sessionmaker def get_sqlalchemy_database_uri(): username = os.getenv("POSTGRES_USER") password = os.getenv("POSTGRES_PASSWORD") host = os.getenv("POSTGRES_HOST") db_name = "mev_inspect" return f"postgresql://{username}:{password}@{host}/{db_name}" def get_engine(): return create_engine(get_sqlalchemy_database_uri()) def get_session(): Session = sessionmaker(bind=get_engine()) return Session()