decorator to prevent adding attributes to class?

Neal Becker ndbecker2 at
Fri Jul 11 17:29:55 CEST 2008

After spending the morning debugging where I had misspelled the name of an
attribute (thus adding a new attr instead of updating an existing one), I
would like a way to decorate a class so that attributes cannot be (easily)

I guess class decorators are not available yet (pep 3129), but probably
inheritance can be used.

Can anyone suggest an implementation?

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