Jeremy Hylton wrote at 2004-1-21 11:44 -0500:
>On Wed, 2004-01-21 at 10:42, Brian Lloyd wrote:
>> What I don't like is that it is somewhat magical, and now the 
>> error you would get (probably 'None has no attribute xxx') if 
>> the user doesn't have access to the container doesn't tell you 
>> the real problem. 
>What if you used a special object that would produce a useful error
>message if the user tries to access the container.  Assuming an access
>involves an attribute access:
>class UnauthorizedContext:
>    def __getattr__(self, attr):
>        raise Unauthorized("user does not have access to context")
>I'm sure the details aren't right, but I think the idea is clear enough.



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