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For maintainability, a third option, like a combination of your option 1 and 2, is to write a wrapper module (DB::MyDB or something) with methods behaving like the ones being used. That way, if you make backend changes, you modify the implementation of MyDB, not the scripts that use it, as long as the methods' input-output spec stays the same.

In reply to Re: Changing Modules in Bad Code by chunlou
in thread Changing Modules in Bad Code by Kozz

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