code: def safe_div(a, b):
      if b == 0.0:
          return 0.0
      else:
          return a / b
  
imports: from typing import Any
  import jieba
  from rouge_chinese import Rouge
  import rouge
  import re
  from copy import deepcopy
  from collections import defaultdict
label_desc: Use image node_id 5 for calling the Metric obj's underlying member method code with example usage: obj.safe_div(a, b) and returns: int, unknown