input: Write a function that takes in a dictionary (string → integer) and returns the sum of all values in the dictionary.
  def compute_dict_sum(input_dict):
      result = 0
      for val in input_dict.values():
          result += val
      return result
  
  my_dict = {"a": 5, "b": 10, "c": 15}
  assert compute_dict_sum(my_dict) == 30
output: def compute_dict_sum(input_dict):
      result = 0
      for val in input_dict.values():
          result += val
      return result