Python super

class Base1:
    def chi(self):
        print("我是可怜的Base1")

class Base2:
    def chi(self):
        print("我是可怜的Base2")

class Base3:
    def chi(self):
        print("我是可怜的Base3")

class Bar(Base1, Base2, Base3):
    def chi(self):
        print("我是Bar里面的吃1")
        # super(类名, self) 从某个类开始找下一个MRO
        super(Base2, self).chi() # 此时调用的super. 在Bar调用 -> super表示找MRO里的下一个
        # super().chi() # super(Bar, self).chi()
        print("我是Bar里面的吃2")

b = Bar() # Bar, Base1, Base2, Base3, object
b.chi()
print(Bar.__mro__)


class Base1:
    def chi(self):
        super().chi() # super找的是MRO的下一个.
        print("我是可怜的Base1")

class Base2:
    def chi(self):
        super().chi()
        print("我是可怜的Base2")

class Base3:
    def chi(self):
        print("我是可怜的Base3")

class Bar(Base1, Base2, Base3):
    def chi(self):
        print("我是Bar里面的吃1")
        # super(类名, self) 从某个类开始找下一个MRO
        super(Bar, self).chi() # 此时调用的super. 在Bar调用 -> super表示找MRO里的下一个
        # super().chi() # super(Bar, self).chi()
        print("我是Bar里面的吃2")
#
b = Bar() # 报错 Base1 object
b.chi() # 报错
# # 坑


# MRO + super ⾯试题
class Init(object):
    def __init__(self, v): # 2
        print("init")
        self.val = v

class Add2(Init):
    def __init__(self, val): # 2
        print("Add2")
        super(Add2, self).__init__(val) # Mult
        print(self.val)
        self.val += 2

class Mult(Init):
    def __init__(self, val):
        print("Mult")
        super(Mult, self).__init__(val) # Haha
        self.val *= 5

class HaHa(Init):
   def __init__(self, val):
        print("哈哈")
        super(HaHa, self).__init__(val) # Init
        self.val /= 5

class Pro(Add2,Mult,HaHa): #
    pass

class Incr(Pro): # incr->pro->add2->Mult->HaHa->init
    def __init__(self, val): # 5
        super(Incr, self).__init__(val) # Add2
        self.val += 1



'''
MRO: method resolution order
Incr,Pro,Add2,Mult,HaHa,Init,Object

super()
a = Incr()
a.chi()
'''

# # print(Incr.__mro__)
# # Incr Pro Add2 Mult HaHa Init
# p = Incr(5) # p.val = 8.0
# # Add2
# # Mult
# # 哈哈
# # init
# # 5.0
# # 8.0
# print(p.val)
#
c = Add2(2) # Add2, Init, Object c.val = 2
# Add2
# init
# 2
# 4

print(c.val) # 4
#