def get_attribute(instance, key):
    state, dict_ = instance_state(instance), instance_dict(instance)
    return state.manager[key].impl.get(state, dict_)
Get the value of an attribute, firing any callables required.
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/orm/attributes.py/get_attribute