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鸽子
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874天前class A: |
def __init__(self): |
print('A init') |
self.a1 = 'a1' |
def __get__(self, instance, owner): |
print('A.__get__',self,instance,owner) |
return self |
def __set__(self, instance, value): |
print('A.__set__',self,instance,value) |
class B: |
x = A() |
def __init__(self): |
print('B.init') |
# self.x = 100 #触发了类的set描述器,相当于操作类属性 |
# self.x = A() |
# print(B.x) |
# print() |
# print(B.x.a1) |
# print() |
b = B() |
# print() |
# print(B.x) |
# print() |
# print(b.x.a1) |
b.x = 600 |
print(b.x) |
print(b.__dict__) |
# B.x = 500 |
print(B.__dict__) |
