python 继承

# class People:#经典类#父类
class People(object): #新式类 # 父类
    def __init__(self,name,age):
        self.name = name
        self.age = age
    def __del__(self):
        pass

    def eat(self):
        print('%s is eating...'%self.name)

    def talk(self):
        print("%s is talking ..."%self.name)

    def sleep(self):
        print("%s is sleeping..."%self.name)

class Relation(object):
    def make_friends(self,obj):
        print('%s is making friends with %s'%(self.name,obj.name))

class Man(People,Relation):#多继承
    def __init__(self,name,age,money):
        # People.__init__(self,name,age)
        super(Man,self).__init__(name,age)#新式类的写法
        self.money = money
        print('%s 一出生就有%s'%(self.name,self.money))
    def piao(self):
        print("%s is piaoing....20s ...done."%self.name)

    def sleep(self):#更改父类方法
        People.sleep(self)#d调用父类的方法
        print("man is sleeping")

class Woman(People,Relation):
    def get_brith(self):
        print('%s is born a baby ...'%self.name)
m1 = Man("test",22,200)

# m1.eat()
# m1.piao()
# m1.sleep()

w1 = Woman('luxi',25)
# w1.get_brith()

m1.make_friends(w1)

#多继承析构函数会继承最前面的类
#python3经典类和新式类都是按广度优先继承的
#python2经典类深度优先来继承的，新式类按广度优先继承

#继承实例

class School (object):
    def __init__(self,name,addr):
        self.name = name
        self.addr = addr
        self.students = []
        self.staffas = []

    def enroll(self,stu_obj):
        print("为学员%s办理注册手续"%stu_obj.name)
        self.students.append(stu_obj)
    def hire(self,staff_obj):
        self.staffas.append(staff_obj)
        print("雇佣新员工%s" % staff_obj.name)


class SchoolMember(object):
    def __init__(self,name,age,sex):
        self.name = name
        self.age = age
        self.sex = sex
    def tell(self):
        pass

class Teacher(SchoolMember):
    def __init__(self,name,age,sex,salary,course):
        super(Teacher,self).__init__(name,age,sex)
        self.salary = salary
        self.course = course

    def tell(self):
        print('''
        --- info of Teacher:%s ---
        Name:%s
        Age:%s
        Sex:%s
        salary:%s
        course:%s
        '''%(self.name,self.name,self.age,self.sex,self.salary,self.course))

    def teach(self):
        print("%s is teaching course [%s]"%(self.name,self.course))

class Student(SchoolMember):
    def __init__(self,name,age,sex,stu_id,grade):
        super(Student,self).__init__(name,age,sex)
        self.stu_id = stu_id
        self.grade = grade

    def tell(self):
        print('''
        --- info of Student:%s ---
        Name:%s
        Age:%s
        Sex:%s
        Stu_id:%s
        Grade:%s
        '''%(self.name,self.name,self.age,self.sex,self.stu_id,self.grade))

    def pay_tuition(self,amount):
        print("%s has paid tution for $%s"%(self.name,amount))

school = School("old boy","北京")
t1 = Teacher("Oldboytest",'56','MF',2000000,"Linux")
t2 = Teacher("Mrzhang",'22','M',2000,"python3")

s1= Student("小刘",22,"MF",10001,"python3")
s2= Student("小解",19,"MF",10002,"Linux")

t1.tell()
s1.tell()
school.hire(t1)
school.enroll(s1)
school.enroll(s2)

print(school.students)
print(school.staffas)
school.staffas[0].teach()

for stu in school.students:
    stu.pay_tuition(5000)