2010/8/23 Michael Foord <[email protected]>:
> Properties are allowed to do whatever the heck they want. That doesn't mean
> that you have to execute code to determine whether they exist or not.
I thought you were trying to determine whether the attribute exists
not the property.
>
> If fetching an attribute raises an AttributeError it doesn't mean that
> attribute doesn't exist (although I admit that at the moment this is exactly
> what hasattr uses to mean) it just means that fetching that attribute raised
> an AttributeError. Even if you allow other exceptions to propagate you are
> still left with the fact that an AttributeError raised as a bug will still
> be silenced and interpreted as meaning that hasattr should just return
> False.
Raised as a bug? Is this not a valid pattern?
@property
def myprop(self):
if not self.myprop_support:
raise AttributeError("myprop")
--
Regards,
Benjamin
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