input: Write a function that prints out the largest value from a given list of numbers.
  
  def get_max_value(numbers):
      return max(numbers)
  
  print(get_max_value([2, 4, 1, 6]))  # 6
  print(get_max_value([3, 8, 7, 1]))  # 8
  print(get_max_value([5, 2, 9, 4]))  # 9
  print(get_max_value([1, 3, 2, 5]))  # 5
  print(get_max_value([]))  # None
output: def get_max_value(numbers):
      if not numbers:
          return None
      return max(numbers)