#!/usr/bin/env python3fromstorerimportStorers=Storer()ifs.get_value()!=0:raiseSystemExit('Initial value incorrect.')s.set_value(42)ifs.get_value()!=42:raiseSystemExit('Setting value failed.')try:s.set_value('not a number')raiseSystemExit('Using wrong argument type did not fail.')exceptTypeError:pass