mptt
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exception mptt.AlreadyRegistered
- Deprecated - don’t use this anymore. It’s never thrown, you don’t need to catch it
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mptt.register(*args, **kwargs)
- Registers a model class as an MPTTModel, adding MPTT fields and adding MPTTModel to __bases__.
This is equivalent to just subclassing MPTTModel, but works for an already-created model.