day20_python_1124

01 昨日内容回顾
类的名称空间 对象的空间
class A:
def __init__():
pass

obj = A()
对象查询属性：对象本身 ----> 类 -----> 父类
类查询属性：类本身 -----> 父类

组合：一个类的属性是另一个类的对象。
class A:
def __init__(self,name):
self.name = name

def func(self,obj):
self.aaa = obj
class B:
pass
b = B()
o = A('barry')
o.func(666)
o.func(b)

python三大特性之一：继承，封装，多态。
继承：
单继承，多继承。
单继承：
class A:
def __init__(self,name):
self.name = name

def func(self,obj):
self.aaa = obj

class B(A):
def func(self,obj,obj2):
# A.func(self,obj)
#super(A,self).func(obj)
super().func(obj)
print(obj2)

b = B('wusir')
#b.func(111)
b.func()

# 既要执行子类func 又要执行父类的func
b.func(666,777)

02 作业讲解

03 类与类之间的关系
依赖关系
关联关系
聚合关系
组合关系
......
04 多继承

# 03  类与类的关系

# 依赖关系# 大象走进冰箱，并关闭# 基本类# class Elphant:#      def __init__(self,name):#          self.name = name#      def open(self):#          """#          开门#          :return:#          """#          pass#      def close(self):#          """#          关门#          :return:#          """#          pass##  class Refrigerator:#      def __init__(self,name):#          self.name = name##      def open_door(self):#          print('冰箱门被打开啦')##      def close_door(self):#          print('冰箱门被关闭啦')

# 接下来# class Elphant:#     def __init__(self, name):#         self.name = name##     def open(self,obj):#         """#         开门#         :return:#         """#         print('心里默念：1,2,3,开！')#         obj.open_door()##     def close(self):#         """#         关门#         :return:#         """#         print('心里默念：3,2,1关！')### class Refrigerator:#     def __init__(self, name):#         self.name = name##     def open_door(self):#         print('冰箱门被打开啦')##     def close_door(self):#         print('冰箱门被关闭啦')## e1 = Elphant('神奇的大象')# media = Refrigerator('美的')# e1.open(media)# 依赖关系：给一个类的方法传了一个参数此参数是另一个类的对象（类名）。# 这种依赖关系是所有关系中紧密型最低的，耦合性最低的。# 冰箱依赖大象，就好比企业与兼职工的关系，你中有我，我中没有你。

# 关联关系 聚合关系 组合关系

# class Boy:#     def __init__(self, name, girlfriend=None):#         self.name = name#         self.girlfriend = girlfriend##     def have_a_dinner(self):#         if self.girlfriend:#             print('%s 和 %s 一起共度晚餐'%(self.name,self.girlfriend.name))#         else:#             print('单身狗吃什么吃')##     def append_girl(self,girl):#         self.girlfriend = girl##     def remove_girl(self):#         self.girlfriend = None## class Girl:#     def __init__(self, name):#         self.name = name

# 起初创业没有女朋友# b = Boy('alex')# # b.have_a_dinner()## # 突然有一天 alex 家 拆迁，有女朋友了# g = Girl('如花')# # print(g.name)# b.append_girl(g)# b.have_a_dinner()

# wusir 娃娃亲# gg = Girl('金莲')  ## wu = Boy('武大',gg)# wu.have_a_dinner()

# 西门太白出现。# gg = Girl('金莲')  ## wu = Boy('武大',gg)# # 女朋友失去了# wu.remove_girl()# wu.have_a_dinner()

# 学校，老师# 老师一定要关联学校# class School:#     def __init__(self,name,address):#         self.name = name#         self.address = address### class Teacher:#     def __init__(self, name,comment,school):#         self.name = name#         self.comment = comment#         self.school = school##     def check_address(self):#         print('%s 在%s 办公'%(self.name,self.school.address))### beijing = School('老男孩北京校区','美丽富饶的沙河')# shanghai = School('老男孩上海校区','上海漳江新区')# shenzhen = School('老男孩深圳校区','南山区平山村儿')## t1 = Teacher('太白','优秀',beijing)# t2 = Teacher('海峰','优秀',shanghai)# t3 = Teacher('日天','看吧',shenzhen)# t1.check_address()# 学校同时也要关乎多个老师# class School:#     def __init__(self,name,address):#         self.name = name#         self.address = address#         self.teacher_list = []

    # def append_teacher(self,teacher):    #     self.teacher_list.append(teacher)

# class Teacher:#     def __init__(self, name,comment,school):#         self.name = name#         self.comment = comment#         self.school = school##     def check_address(self):#         print('%s 在%s 办公'%(self.name,self.school.address))

# beijing = School('老男孩北京校区','美丽富饶的沙河')# shanghai = School('老男孩上海校区','上海漳江新区')# shenzhen = School('老男孩深圳校区','南山区平山村儿')

# t1 = Teacher('太白','优秀',beijing)# t2 = Teacher('景女神','优秀',beijing)# t3 = Teacher('文周','优秀',beijing)# # t2 = Teacher('海峰','优秀',shanghai)# # t3 = Teacher('日天','看吧',shenzhen)# # t1.check_address()# beijing.append_teacher(t1)# beijing.append_teacher(t2)# beijing.append_teacher(t3)

# # print(beijing.teacher_list)# for i in beijing.teacher_list:#     print(i.name)

# 04 面向对象三大特征：继承2

# 单继承的练习题：# 1# class Base:#     def __init__(self, num):#         self.num = num#     def func1(self):#         print(self)#         print(self.num)## class Foo(Base):#     pass## obj = Foo(123)# print(obj)# obj.func1()

# 2# class Base:##     def __init__(self, num): # self = obj  num = 123#         self.num = num  # 给对象空间封装属性 num = 123##     def func1(self):#         print(self.num)## class Foo(Base):##     def func1(self):#         print("Foo. func1", self.num)# obj = Foo(123)  # 实例化对象，产生obj# obj.func1()

# 3

# class Base:##     def __init__(self, num):  # self= obj  num = 123#         self.num = num  # obj.num = 123##     def func1(self):#         print(self.num)## class Foo(Base):##     def func1(self):#         print("Foo. func1", self.num)## obj = Foo(123)  # obj 执行__init__# obj.func1()

# 4# class Base:##     def __init__(self, num):#         self.num = num # obj.num = 123##     def func1(self):#         print(self.num)  # 123#         self.func2()  #  "Foo.func2"##     def func2(self):#         print("Base.func2")## class Foo(Base):#     def func2(self):#         print("Foo.func2")## obj = Foo(123)  # obj 执行__init__# obj.func1()

# 5

# class Base:##     def __init__(self, num):#         self.num = num##     def func1(self):#         print(self.num)#         self.func2()##     def func2(self):#         print(111, self.num)### class Foo(Base):##     def func2(self):#         print(222, self.num)## lst = [Base(1), Base(2), Foo(3)]# for obj in lst:#     obj.func2()# 111 1  111 2  222 3# 第一次循环：Base(1) self.num = 1   Base(1).func2()# 第一次循环：Base(2) self.num = 2   Base(2).func2()# 第一次循环：Foo(3) self.num = 3   Foo(3).func2()

# class Base:##     def __init__(self, num):#         self.num = num##     def func1(self):#         print(self.num)  # 3#         self.func2()##     def func2(self):#         print(111, self.num)## class Foo(Base):#     def func2(self):#         print(222, self.num)## lst = [Base(1), Base(2), Foo(3)]# for obj in lst:#     obj.func1()

# 第一次：obj = Base(1) obj.num = 1     1 111 1# 第二次：obj = Base(2) obj.num = 2    2 111 2# 第三次：obj = Foo(3) obj.num = 3    3 222 3

# class A:#     def __init__(self):#         self.func1()##     def func1(self):#         print('in A func1')## class B(A):#     def func1(self):#         print('in B func1')## obj = B()# obj.func1()

# 两个 in B func1

# 一个 in B func1

# 多继承'''python2x版本：    python2.2版本之前，类都是经典类，不继承object    python2.2之后，出现了新式类： class A(object)    class A(object) 新式类    class B: 经典类

python3x ：默认都继承object 都是新式类。

经典类： 多继承，深度优先。新式类： c3算法。'''# class A(object):#     pass

# class Immortal:#     """#     神仙类#     """#     def __init__(self):#         self.age = '长生不老'##     def fly(self):#         print('神仙都会飞')##     def eat(self):#         print('神仙也需要进食')## class Monkey:##     def climb(self):#         print('猴子都会爬树')##     def eat(self):#         print('猴子需要进食')### class Monkey_sun(Immortal,Monkey):#     pass## sun = Monkey_sun()# # sun.fly()# # sun.climb()# sun.eat()

# 经典类： 多继承，深度优先。

# class A:#     pass# class B(A):#     pass# class C(A):#     pass# class D(B, C):#     pass# class E:#     pass# class F(D, E):#     pass# class G(F, D):#     pass# class H:#     pass# class Foo(H, G):#     pass

# 经典类遵循深度优先。从左至右依次寻找。

# 新式类:# class A:#     pass## class B:#     pass## class C(B,A):#     pass# #mro(Child(Base1，Base2)) = [ Child ] + merge( mro(Base1), mro(Base2), [ Base1, Base2] )# # mro(C) = mro(C(B,A)) = [C] + merge(mro(B),mro(A),[B,A])## # [E,D]# class D:#     pass## class E(D):#     pass

# 表头 表尾# 表头 列表的第一个元素# 表尾 列表中表头以外的元素集合（可以为空）# [A,B,D,C] A表头 BDC 表尾

# merge( [E,O], [C,E,F,O], [C] )

# 取出第一个列表的表头 E 所有列表的表尾  O   E F O  ''# 如果E 在所有的表尾中，那么就跳过这个列表# merge( [E,O], [C,E,F,O], [C] )# 第二个列表表头： C   O EFO ''  将C 单独提出# [c] + merge([E,O], [E,F,O])# mro(C) = mro(C(B,A)) = [C] + merge(mro(B),mro(A),[B,A])# mro(A) = mro(A(B,C))"""mro(A(B,C)) = [A] + merge(mro(B),mro(C),[B,C])mro(B) = mro(B(D,E))mro(B(D,E)) = [B] + merge(mro(D),mro(E),[D,E])mro(B(D,E)) = [B] + merge([D,O],[E,O],[D,E])mro(B(D,E)) = [B,D] + merge([O],[E,O],[E])mro(B(D,E)) = [B,D,E] + merge([O],[O])mro(B(D,E)) = [B,D,E,O]

mro(C) = mro(C(E,F))mro(C(E,F)) = [C] + merge([E,O],[F,O],[E,F])mro(C(E,F)) = [C,E] + merge([O],[F,O],[F])mro(C(E,F)) = [C,E,F] + merge([O],[O])mro(C(E,F)) = [C,E,F,O]  

# 计算总的：mro(A(B,C)) = [A] + merge([B,D,E,O],[C,E,F,O],[B,C])mro(A(B,C)) = [A,B] + merge([D,E,O],[C,E,F,O],[C])mro(A(B,C)) = [A,B,D] + merge([E,O],[C,E,F,O],[C])mro(A(B,C)) = [A,B,D,C] + merge([E,O],[E,F,O])mro(A(B,C)) = [A,B,D,C,E] + merge([O],[F,O])mro(A(B,C)) = [A,B,D,C,E,F] + merge([O],[O])mro(A(B,C)) = [A,B,D,C,E,F,O] """

# class O:#     def func(self):#         print('in O')# class D(O):#     pass#     # def func(self):#     #     print('in D')## class E(O):#     pass#     # def func(self):#     #     print('in E')## class F(O):#     def func(self):#         print('in F')## class B(D,E):#     pass#     # def func(self):#     #     print('in B')## class C(E,F):#     pass#     # def func(self):#     #     print('in C')## class A(B,C):#     def func(self):#         super().func()#         print('in A')# obj = A()# obj.func()# mro(A(B,C)) = [A,B,D,C,E,F,O]# print(A.__mro__)# super 遵循mro 顺序

# 依赖关系# 大象走进冰箱，并关闭# 基本类# class Elphant:#      def __init__(self,name):#          self.name = name#      def open(self):#          """#          开门#          :return:#          """#          pass#      def close(self):#          """#          关门#          :return:#          """#          pass# #  class Refrigerator:#      def __init__(self,name):#          self.name = name# #      def open_door(self):#          print('冰箱门被打开啦')# #      def close_door(self):#          print('冰箱门被关闭啦')
# 接下来# class Elphant:#     def __init__(self, name):#         self.name = name##     def open(self,obj):#         """#         开门#         :return:#         """#         print('心里默念：1,2,3,开！')#         obj.open_door()##     def close(self):#         """#         关门#         :return:#         """#         print('心里默念：3,2,1关！')### class Refrigerator:#     def __init__(self, name):#         self.name = name##     def open_door(self):#         print('冰箱门被打开啦')##     def close_door(self):#         print('冰箱门被关闭啦')## e1 = Elphant('神奇的大象')# media = Refrigerator('美的')# e1.open(media)# 依赖关系：给一个类的方法传了一个参数此参数是另一个类的对象（类名）。# 这种依赖关系是所有关系中紧密型最低的，耦合性最低的。# 冰箱依赖大象，就好比企业与兼职工的关系，你中有我，我中没有你。
# 关联关系 聚合关系 组合关系
# class Boy:#     def __init__(self, name, girlfriend=None):#         self.name = name#         self.girlfriend = girlfriend##     def have_a_dinner(self):#         if self.girlfriend:#             print('%s 和 %s 一起共度晚餐'%(self.name,self.girlfriend.name))#         else:#             print('单身狗吃什么吃')##     def append_girl(self,girl):#         self.girlfriend = girl##     def remove_girl(self):#         self.girlfriend = None## class Girl:#     def __init__(self, name):#         self.name = name
# 起初创业没有女朋友# b = Boy('alex')# # b.have_a_dinner()## # 突然有一天 alex 家 拆迁，有女朋友了# g = Girl('如花')# # print(g.name)# b.append_girl(g)# b.have_a_dinner()
# wusir 娃娃亲# gg = Girl('金莲')  ## wu = Boy('武大',gg)# wu.have_a_dinner()
# 西门太白出现。# gg = Girl('金莲')  ## wu = Boy('武大',gg)# # 女朋友失去了# wu.remove_girl()# wu.have_a_dinner()

# 学校，老师# 老师一定要关联学校# class School:#     def __init__(self,name,address):#         self.name = name#         self.address = address### class Teacher:#     def __init__(self, name,comment,school):#         self.name = name#         self.comment = comment#         self.school = school##     def check_address(self):#         print('%s 在%s 办公'%(self.name,self.school.address))### beijing = School('老男孩北京校区','美丽富饶的沙河')# shanghai = School('老男孩上海校区','上海漳江新区')# shenzhen = School('老男孩深圳校区','南山区平山村儿')## t1 = Teacher('太白','优秀',beijing)# t2 = Teacher('海峰','优秀',shanghai)# t3 = Teacher('日天','看吧',shenzhen)# t1.check_address()# 学校同时也要关乎多个老师class School:    def __init__(self,name,address):        self.name = name        self.address = address        self.teacher_list = []
    def append_teacher(self,teacher):        self.teacher_list.append(teacher)
class Teacher:    def __init__(self, name,comment,school):        self.name = name        self.comment = comment        self.school = school
    def check_address(self):        print('%s 在%s 办公'%(self.name,self.school.address))

beijing = School('老男孩北京校区','美丽富饶的沙河')shanghai = School('老男孩上海校区','上海漳江新区')shenzhen = School('老男孩深圳校区','南山区平山村儿')
t1 = Teacher('太白','优秀',beijing)t2 = Teacher('景女神','优秀',beijing)t3 = Teacher('文周','优秀',beijing)# t2 = Teacher('海峰','优秀',shanghai)# t3 = Teacher('日天','看吧',shenzhen)# t1.check_address()beijing.append_teacher(t1)beijing.append_teacher(t2)beijing.append_teacher(t3)
# print(beijing.teacher_list)for i in beijing.teacher_list:    print(i.name)