On Friday, August 22, 2014 9:25:02 AM UTC+8, luofeiyu wrote:
> class C(object):
>
Well, in python class is treated
as onte of the first class built in
operations.
class "new_class_ame" ( parentclasses)
Please check this syntax first in Python.
> a = 'abc'
>
> def __getattribute__(self, *args, **kwargs):
>
> print("__getattribute__() is called")
>
> return object.__getattribute__(self, *args, **kwargs)
>
> def __getattr__(self, name):
>
> print("__getattr__() is called ")
>
> return name + " from getattr"
>
> def __get__(self, instance, owner):
>
> print("__get__() is called", instance, owner)
>
> return self
>
> def foo(self, x):
>
> print(x)
>
>
>
>
>
> class C2(object):
>
> d = C()
>
>
>
>
>
> >>> c2.d
>
> __get__() is called <__main__.C2 object at 0x000000000297BE10> <class
>
> '__main__.
>
> C2'>
>
> <__main__.C object at 0x000000000297BBA8>
>
>
>
> I understant the result ,c2.d trigger the __get__ method in class C.
>
> def __get__(self, instance, owner):
>
> print("__get__() is called", instance, owner)
>
> return self
>
>
>
> It print "__get__() is called", instance, owner and return self
>
> `<__main__.C object at 0x000000000297BBA8>`
>
>
>
>
>
> >>> c2.d.a
>
> __get__() is called <__main__.C2 object at 0x000000000297BE10> <class
>
> '__main__.
>
> C2'>
>
> __getattribute__() is called
>
> 'abc'
>
>
>
> Why the result of c2.d.a is not :
>
>
>
> __get__() is called <__main__.C2 object at 0x000000000297BE10> <class
>
> '__main__.
>
> C2'>
>
> __getattribute__() is called
>
> 'abc'
>
>
>
> Why the` return self` in the __get__ method in class C does not work?
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