code: def two_sum(array, target):
      dic = {}
      for i, num in enumerate(array):
          if num in dic:
              return dic[num], i
          else:
              dic[target - num] = i
      return None
  
label_desc: Use image node_id 1 for calling a global function with example usage: two_sum(array, target) and returns: None, dic,  i