input: Write a python function to get the top five values from a list of floats.
  assert get_top_five_values([100.0, 74.0, 56.2, 45.5, 27.8, 21.0, 8.2, 4.1]) == [100.0, 74.0, 56.2, 45.5, 27.8]
  assert get_top_five_values([1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7, 8.8, 9.9, 10.0]) == [10.0, 9.9, 8.8, 7.7, 6.6]
  assert get_top_five_values([10.0, 10.0, 10.0, 10.0, 10.0, 9.9, 9.8]) == [10.0, 10.0, 10.0, 10.0, 10.0]
output: def get_top_five_values(values):
      return sorted(values, reverse=True)[:5]