input: Write a python function to print distinct elements from a list.
  assert print_distinct([1, 2, 2, 3, 4, 4, 5]) == [1, 2, 3, 4, 5]
  assert print_distinct([10, 20, 10, 30, 40, 30, 50]) == [10, 20, 30, 40, 50]
  assert print_distinct([5, 5, 5, 5, 5]) == [5]
output: def print_distinct(lst):
      return list(set(lst))