>>> class Foo:
... 'it is a example'
... print 'i am here'
...
i am here
>>> Foo.__name__
'Foo'
>>> Foo().__name__
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: Foo instance has no attribute '__name__'
>>> Foo.__doc__
'it is a example'
>>> Foo().__doc__
'it is a example'
>>> Foo.__dict__
{'__module__': '__main__', '__doc__': 'it is a example'}
>>> Foo().__dict__
{}
>>> Foo.__module__
'__main__'
>>> Foo().__module__
'__main__'
>>> myname=Foo()
>>> myname.__name__
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: Foo instance has no attribute `__name__`
实例没有属性的原因是什么 __name__？
也许没关系 __name__ instance-myname是 myname。
你介意告诉我更合乎逻辑的，而不是不合理的语法规则吗？