def find_k_product(test_list, K):
  def get_product(val) : 
  	res = 1
  	for ele in val: 
  		res *= ele 
  	return res 
  
  res = get_product([sub[K] for sub in test_list])
  return (res) 
def find_k_product(test_list, K):
    def get_product(val):
        res = 1
        for ele in val:
            res *= ele
           
        return res
    res = get_product([sub[K] for sub in test_list])
    return res