code: def precision(self):
      def ratio(a, b):
          return a / b if b > 0 else 0
  
      return [
          ratio(self.stat.match1, self.stat.count1),
          ratio(self.stat.match2, self.stat.count2),
          ratio(self.stat.match3, self.stat.count3),
          ratio(self.stat.match4, self.stat.count4),
      ]
  
imports: import ctypes
  import math
  import sys
  from dataclasses import dataclass, field
  import torch
  from fairseq.dataclass import FairseqDataclass
  from fairseq.scoring import BaseScorer, register_scorer
  from fairseq.scoring.tokenizer import EvaluationTokenizer
label_desc: Use image node_id 5 for calling the Scorer obj's underlying member method code with example usage: obj.precision() and returns: list, unknown