input: 
  def dict_sum(dictionary):
      sum = 0
      for key, value in dictionary.items():
          sum += value
      return sum
      """
      Computes the sum of the values in a given dictionary.
      >>> dict_sum({'A': 5, 'B': 6, 'C': 10})
      21
      """
  
output:     sum = 0
      for key, value in dictionary.items():
          sum += value
      return sum