input: Write a python function to return strings of length five.
  assert five_length_strings(["Hello", "Hi", "Hola", "Bye", "Goodbye"]) == ["Hello", "Hola"]
  assert five_length_strings(["Apple", "Pine", "Mango", "Peach", "Grape"]) == ["Apple", "Mango", "Peach", "Grape"]
  assert five_length_strings(["12345", "1234", "123456", "54321"]) == ["12345", "54321"]
output: def five_length_strings(strings):
      return [s for s in strings if len(s) == 5]