Paul Rubin a écrit :
> "Steven W. Orr" <[EMAIL PROTECTED]> writes:
>
>>AttributeError: _const instance has no attribute '_const'
>>
>>What am I missing here? (Sorry if it should be obvious)
>
>
> Oh I see. No it's not obvious. module "const" has gotten overwritten
> by the _const instance. I think that module author was too clever for
> his or her own good.
Not necessarily - given the intent, it's just smart IMHO. But the
workaround is quite obvious anyway:
>>> import const
>>> # so what is const ?
>>> const
<const._const instance at 0x40409acc>
>>> # ok, it's an instance, so it should refer to it's class:
>>> Const = const.__class__
>>> Const
<class const._const at 0x403fbdac>
>>> # Bingo. Let's have another _const instance:
>>> c = Const()
>>> c
<const._const instance at 0x404095cc>
>>> c.pi = 42
>>> c.pi = 33
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "const.py", line 5, in __setattr__
raise self.ConstError, "Can't rebind const(%s)"%name
const.ConstError: Can't rebind const(pi)
>>>
HTH
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