Method memo

lib/sqlalchemy/orm/unitofwork.py:230–235

(self, key, callable_)

        return state in self.states and self.states[state][0]

    def memo(self, key, callable_):
        if key in self.attributes:
            return self.attributes[key]
        else:
            self.attributes[key] = ret = callable_()
            return ret

    def remove_state_actions(self, state):
        """Remove pending actions for a state from the uowtransaction."""