code: def token_accuracy(self):
      return metrics.accuracy_score(self.conditions, self.predictions)
  
imports: import logging
  from collections import OrderedDict
  import numpy
  from sklearn import metrics
  from sklearn.metrics import confusion_matrix
label_desc: Use image node_id 28 for calling the ConfusionMatrix obj's underlying member method code with example usage: obj.token_accuracy() and returns: metrics