"""SQLAlchemy Metadata and Session object""" from sqlalchemy import MetaData __all__ = ['engine', 'metadata', 'Session'] # SQLAlchemy database engine. Updated by model.init_model(). engine = None # SQLAlchemy session manager. Updated by model.init_model(). Session = None # Global metadata. If you have multiple databases with overlapping table # names, you'll need a metadata for each database. metadata = MetaData()