code: def _precision(table):
      TP = table[0]
      FP = table[1]
      try:
          return float(TP) / (TP + FP)
      except ZeroDivisionError:
          return None
  
imports: import math
  import operator
label_desc: Use image node_id 5 for calling a global function with example usage: _precision(table) and returns: unknown, None