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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _preprocess_Y(self, Y, k):
 """Convert Y to prob labels if necessary"""

        Y = Y.clone()

        # If preds, convert to probs
        if Y.dim() == 1 or Y.shape[1] == 1:
            Y = pred_to_prob(Y.long(), k=k)
        return Y