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I've seen some jupyter notebooks that seem to combine LassoCV with cross_val_score, and I'm confused what the point is.

Usually the working flow looks like:

alpha = [some array of alpha values]
lasso = LassoCV(cv=5, alphas=alphas)
cross_val_score(lasso, X_train, y_train ,cv=5)

What is the point of using cross_val_score if there's already CV embedded within LassoCV?

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