Python_Example_多子类继承程序

2018-09-12

Author: 楚格

IDE： Pycharm2018.02   Python 3.7   

KeyWord :  继承

Explain:

class A:
def __init__(self):
print("A")
class B(A):
pass
# def __init__(self):
# print("B")
class C(A):
pass
# def __init__(self):
# print("C")
class D(B,C):
pass
# def __init__(self):
# print("D")

obj = D()

 

1------------------------------------------------------------------------------------------------------------------

--

    # 定义学校
class School(object):
    print('class School(object):')
    
    def __init__(self,name,addr):
        self.name = name    # 名称
        self.addr = addr    # 地址
        
        self.students =[]
        self.staffs =[]
        
        # 注册方法
    def Enroll(self,stu_obj):
        print("学生%s 注册办理"%stu_obj.name )
        self.students.append(stu_obj)
        
        # 
    def Hire(self,staff_obj):
        self.staffs.append(staff_obj)
        print("雇佣新员工%s" % staff_obj.name)
        

class SchoolMember(object):
    print('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):
    print('class Teacher(SchoolMember):')

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

        # 打印自己信息
    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):
    print('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("科沃兹","楚格")

t1 = Teacher("帕萨特", 2018,"MF",2000,"freeRTOS")
t2 = Teacher("探索者", 2019,"MH",3000,"Ucos-II")

s1 = Student("远景",25,"MF",1001,"python")
s2 = Student("悦动",28,"MH",1002,"Linux")


t1.Tell()
s1.Tell()

school.Hire(t1)
school.Enroll(s1)
school.Enroll(s2)

print('school.students : ',school.students)
print('school.staffs   : ',school.staffs)

school.staffs[0].teach()


for stu in school.students:
    stu.Pay_Tuition(5000)
    print(stu)
    print(school.students)

 

--

 RUN Result

--

---------------------------
class School(object):
class SchoolMember(object):
class Teacher(SchoolMember):
class Student(SchoolMember):

        ---- info of Teacher:帕萨特 ----
            Name   :帕萨特
            Age    :2018
            Sex    :MF
            Salary :2000
            Course :freeRTOS
        

        ---- info of Student:远景 ----
            Name   :远景
            Age    :25
            Sex    :MF
            Stu_id :1001
            Grade  :python
        
雇佣新员工帕萨特
学生远景 注册办理
学生悦动 注册办理
school.students :  [<__main__.Student object at 0x0000000002995048>, <__main__.Student object at 0x0000000002995080>]
school.staffs   :  [<__main__.Teacher object at 0x0000000002980F98>]
帕萨特 is teaching course [freeRTOS]
远景 has paid tution for $5000
<__main__.Student object at 0x0000000002995048>
[<__main__.Student object at 0x0000000002995048>, <__main__.Student object at 0x0000000002995080>]
悦动 has paid tution for $5000
<__main__.Student object at 0x0000000002995080>
[<__main__.Student object at 0x0000000002995048>, <__main__.Student object at 0x0000000002995080>]

Process finished with exit code 0

　　---

额外多态

class Animal:
    def __init__(self, name):  # Constructor of the class
        self.name = name

    def talk(self):  # Abstract method, defined by convention only
        pass #raise NotImplementedError("Subclass must implement abstract method")

    @staticmethod
    def animal_talk(obj):
        obj.talk()

class Cat(Animal):
    def talk(self):
        print('Meow!')


class Dog(Animal):
    def talk(self):
        print('Woof! Woof!')


d = Dog("科沃兹")
#d.talk()

c = Cat("科鲁兹")
#c.talk()
#
# def animal_talk(obj):
#     obj.talk()

Animal.animal_talk(c)
Animal.animal_talk(d)