Metaprogramming to get attributes for repr and update.

metaalchemy.py

db_loc = 'sqlite:///%s\\data.sqlite' % store_loc
logging.info('db_loc=%s', db_loc)

engine = sqlalchemy.create_engine(db_loc, echo=False)
sess = scoped_session(sessionmaker(bind=engine))


class Base(object):
	'''define basic object methods for debugging & initializing.'''
	def __init__(self, *args, **kwargs):
		self.update(*args, **kwargs)

	def update(self, *args, **kwargs):
		prop_names = (k for k in sorted(vars(self)) if not k.startswith('_'))
		kv_prop = itertools.izip(prop_names, args)
		for k, v in itertools.chain(kv_prop, kwargs.iteritems()):
			setattr(self, k, v)

	def __repr__(self):
		attrs = (
			'%s=%s' % (k, getattr(self, k))
			for k in vars(self) if not k.startswith('_sa_'))
		return "%s(%s)" % (self.__class__.__name__, ', '.join(attrs))

Base = declarative_base(cls=Base)