input: Write a python function to display the negative elements from a list.  
  assert neg_nos([-1,4,5,-6]) == -1,-6  
  assert neg_nos([-1,-2,3,4]) == -1,-2  
  assert neg_nos([-7,-6,8,9]) == -7,-6
output: def neg_nos(lst):
      return tuple(filter(lambda x: x < 0, lst))