

def install_member(self, key, implementation):
    if (key in (self.STATE_ATTR, self.MANAGER_ATTR)):
        raise KeyError(('%r: requested attribute name conflicts with instrumentation attribute of the same name.' % key))
    self.originals.setdefault(implementation, getattr(self.class_, key, None))
    setattr(self.class_, key, implementation)

dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/orm/instrumentation.py ClassManager.install_member/VarMisuse@48/83 `key`->`implementation`