input: Write a function to print the absolute difference between two given numbers.
  def absolute_difference(A, B): 
      return abs(A - B) 
    
  assert absolute_difference(9, 5) == 4
  assert absolute_difference(-3, 7) == 10
  assert absolute_difference(-10, -20) == 10
  assert absolute_difference(0, 0) == 0
output: def absolute_difference(A, B): 
      return abs(A - B)