# 依賴關系: 將一個類的類名或者對象傳給另一個類的方法中.
class Elephant:
  def __init__(self, name):
    self.name = name
  def open(self,r1):
    # print(ref1)
    print(f'{self.name}默念三聲: 芝麻開門')
    r1.open_door()
  def close(self):
    print('大象默念三聲:芝麻關門')
class Refrigerator:
  def __init__(self, name):
    self.name = name
  def open_door(self):
    print(f'{self.name}冰箱門被打開了....')
  def close_door(self):
    print('冰箱門被關上了....')
e1=Elephant('大象')
r1=Refrigerator('海爾冰箱') 
e1.open(r1)   #將一個類的類名或者對象傳給另一個類的方法中.產生了依賴關系
          

            
class Boy:
  def __init__(self, name):
    self.name = name
  def meet(self, girl_friend=None):
    self.girl_friend = girl_friend # wu對象空間 : girl_friend : object對象
  def have_diner(self): # self = wu這個對象空間
    if self.girl_friend:
      print(f'{self.name}請年齡為:{self.girl_friend.age},姓名為{self.girl_friend.name}一起吃六塊錢的麻辣燙')
      self.girl_friend.shopping(self) # (self = wu對象空間)
    else:
      print('單身狗,吃什么吃')
class Girl:
  def __init__(self, name, age):
    self.name = name
    self.age = age
  def shopping(self,boy_friend):
    print(f'{boy_friend.name},{self.name}一起去購物!')
wu = Boy('吳超')
flower = Girl('如花', 48)
# 組合: 將一個類的對象封裝成另一個類的對象的屬性.
wu.meet(flower)
wu.have_diner()
          

            
class Aniaml(object):
  type_name = '動物類'

  def __init__(self,name,sex,age):
      self.name = name
      self.age = age
      self.sex = sex

  def eat(self):
    print(self)
    print('吃東西')
class Person(Aniaml):
  pass
P1=Person('alex','男','18')
# 實例化對象時必須執行__init__方法,類中沒有，從父類找，父類沒有，從object類中找
P1.eat()
# 先要執行自己類中的eat方法，自己類沒有才能執行父類中的方法。
          

            
class Aniaml(object):
  type_name = '動物類'
  def __init__(self,name,sex,age):
      self.name = name
      self.age = age
      self.sex = sex

  def eat(self):
    print('吃東西')

class Person(Aniaml):
  def __init__(self,name,sex,age,mind):
    super().__init__(name,sex,age) # super.__init__ 自動幫你把self 傳給父類的__init__
    self.mind = mind

  def eat(self):
    super().eat()
    print('%s 吃飯'%self.name)
 
    
p1 = Person('春哥','laddboy',18,'有思想')
          

            
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
          

            
mro(Child(Base1，Base2)) = [ Child ] + merge( mro(Base1), mro(Base2), [ Base1, Base2] )（其中Child繼承自Base1, Base2）
          

            
mro( B ) = mro( B(A) )
= [B] + merge( mro(A) + [A] )
= [B] + merge( [A] + [A] )
= [B,A]
          

            
mro(B) = mro( B(A1, A2, A3 …) )
= [B] + merge( mro(A1), mro(A2), mro(A3) ..., [A1, A2, A3] )
= ...