Since filter returns a QuerySet, you can use count to check how many results were returned. This is assuming you don’t actually need the results. After looking at the documentation though, it’s better to just call len on your filter if you are planning on using the results later, as you’ll only be making one sql query: A count() call … Read more
Late answer, but might serve future readers. Assume the ternary relationship has participating entities A, B and C (for degree > 3 it gets pretty hairy). The way to read the relationship is to always isolate 2 out of the 3 participating entities and see how they relate towards the third one. And you need … Read more
fit() is for training the model with the given inputs (and corresponding training labels). evaluate() is for evaluating the already trained model using the validation (or test) data and the corresponding labels. Returns the loss value and metrics values for the model. predict() is for the actual prediction. It generates output predictions for the input … Read more