from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import (scoped_session, sessionmaker)

engine = create_engine('sqlite:///database.sqlite3', convert_unicode=True)
db_session = scoped_session(sessionmaker(autocommit=False,
										 autoflush=False,
										 bind=engine))

Base = declarative_base()
Base.query = db_session.query_property()
