from student import Student from professor import Professor s1 = Student('Hung', 13) s1.setId(1234) s1.joinASubject('Math') s2 = Student('Mai', 27) s2.setId(456) s1.joinASubject('English') p1 = Professor('Luong', 28) p1.setDomain('Math') s1.sayHello() print('s1 id: ' + str(s1.getId())) print('s1 subjects: ' + str(s1.getSubject())) s2.sayHello() print('s2 id: ' + str(s2.getId())) print('s2 subjects: ' + str(s2.getSubject())) p1.sayHello() print('p1 domain: ' + p1.getDomain())