docstr: Return scores and the gold of each sample for a specific label
code: def score_vs_true(self, label):
      """Return scores and the gold of each sample for a specific label"""
      label_id = self.f.get_label_id(label)
      pair_list = self.m.scoreVsTrue(label_id)
  
      if pair_list:
          y_scores, y_true = zip(*pair_list)
      else:
          y_scores, y_true = ([], ())
  
      return np.array(y_scores, copy=False), np.array(
          y_true, copy=False
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import fasttext_pybind
  import numpy
  import multiprocessing
  import sys
  from itertools import chain
label_desc: Use image node_id 2 for calling the _Meter obj's underlying member method code with example usage: obj.score_vs_true(label) and returns: np,  np