code: def _compute(self, predictions1, predictions2):
      score_list = [
          p1 == p2 for p1, p2 in zip(predictions1, predictions2)
      ]
      return {"exact_match": np.mean(score_list)}
  
imports: import datasets
  import numpy
  import evaluate
label_desc: Use image node_id 2 for calling the ExactMatch obj's underlying member method code with example usage: obj._compute(predictions1, predictions2) and returns: dict