[visionegg] Re: Minor patch to VisionEgg.__init__.py

Thanks Simeon.  That's in subversion revision 1347.

Simeon Fitch wrote:

>In the defaults resolution code in "ClassWithParameters", there is a
>minor attribute resolution bug if you (gasp!) use multiple inheritance
>and one of your intermediate classes doesn't have a
>"parameters_and_defaults" and/or a "constant_parameters_and_defaults"
>attribute.
>
>My fix is just to check for the attribute before enumerating its values:
>  
>

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