code: def check_label_shapes(labels, preds, shape=0):
      
  
      if shape == 0:
          label_shape, pred_shape = len(labels), len(preds)
      else:
          label_shape, pred_shape = labels.shape, preds.shape
  
      if label_shape != pred_shape:
          raise ValueError("Shape of labels {} does not match shape of "
                           "predictions {}".format(label_shape, pred_shape))
docs: Check to see if the two arrays are the same size.