input: Write a function called filter_greater_than_50 that takes a list of integers as input and returns a new list containing only the integers that are greater than 50. If the list is empty, the function should return an empty list.
  assert filter_greater_than_50([45, 12, 52, 89, 33, 99])==[52, 89, 99]
  assert filter_greater_than_50([10, 20, 30, 40])==[]
  assert filter_greater_than_50([55, 60, 70, 80])==[55, 60, 70, 80]
  assert filter_greater_than_50([])==[]
output: def filter_greater_than_50(lst):
      return [x for x in lst if x > 50]