I found a way to do it, albeit a very hackish one. Since the class instance already catches exceptions from the modules it imports, I can make a custom exception (in a common area for both it and the submodules to import) for it to catch and have it call its own methods there based on information stored in the exception. I'm eventually going to redesign it to be cleaner and more obvious, but for now, this is a nice quick-and-dirty solution.
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