

def key(self):
    values = self._values
    str = 'Value key:\n'
    indexlen = len(repr((len(values) - 1)))
    key_format = (('  %' + repr(indexlen)) + 'd: %s\n')
    for i in range(len(values)):
        str += (key_format % (i, values[i]))
    return str

dataset/ETHPy150Open nltk/nltk/nltk/metrics/confusionmatrix.py ConfusionMatrix.key/original