input: Write a function to filter a list of integers and return a new list containing only the integers greater than 50. If the given list is empty, return an empty list.
  assert filter_list([45, 12, 52, 89, 33, 99])==[52, 89, 99]
  assert filter_list([10, 20, 30, 40])==[]
  assert filter_list([55, 60, 65])==[55, 60, 65]
  assert filter_list([])==[]
output: def filter_list(lst):
      return [x for x in lst if x > 50]