code: def _check_prob_and_prob_vector(predictions):
      
      from .._deps import numpy
  
      ptype = predictions.dtype
      import array
      if ptype not in [float, numpy.ndarray, array.array, int]:
          err_msg  = "Input `predictions` must be of numeric type (for binary "
          err_msg += "classification) or array (of probability vectors) for "
          err_msg += "multiclass classification."
          raise TypeError(err_msg)
docs: Check that the predictionsa are either probabilities of prob-vectors.