code: def make_multi_cols(self, num_class, name):
          '''make cols for multi-class predictions'''
          cols = ['c' + str(i) + '_' for i in xrange(num_class)]
          cols = map(lambda x: x + name, cols)
          return colf make_multi_cols(self, num_class, name):
          '''make cols for multi-class predictions'''
          cols = ['c' + str(i) + '_' for i in xrange(num_class)]
          cols = map(lambda x: x + name, cols)
          return cols
docs: make cols for multi-class predictions