code: def get(self):
      try:
          return self.cm.total_true_positives / self.cm.total_weight
      except ZeroDivisionError:
          return 0.0
  
imports: from __future__ import annotations
  from river import metrics
label_desc: Use image node_id 1 for calling the Accuracy obj's underlying member method code with example usage: obj.get() and returns: unknown, int