Stop random "Parent instance not associated with session"

Question

I know that there were answers to various questions, but the fact is that:

I have some unit tests and they sometimes work fine, but sometimes I get "The parent instance is not associated with the session"

So, how would I start debugging something like this if this happens by accident.

Oh, and there was a challenge before the error db.session.add(my_item).

Answer 1

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Python DEBUG .