What are good arguments or bad and how much weight they have depends on the person and on the circumstances. So a simple rule like: Never use a mutable as a key in a dictionary will sometimes not be the best solution.
True - but I think a purely identity based dictionary *is* the solution for most such cases where the standard Python rule doesn't apply :)
Cheers, Nick.
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Nick Coghlan | [EMAIL PROTECTED] | Brisbane, Australia
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http://boredomandlaziness.skystorm.net
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