“”“单例模式”“”

“”“工厂模式”“”

class Person:passclass Worker(Person):passclass Student(Person):passclass Teacher(Person):passclass Factory:def get_person(self, p_type):if p_type == 'w':return Worker()elif p_type == 's':return Student()else:return Teacher()pf = Factory()
worker = pf.get_person('w')
stu = pf.get_person('s')
teacher = pf.get_person('t')