input: Write a function to filter a list of strings and return only those strings that are longer than 5 characters. If the input list is empty, return an empty list.
  
  assert filter_long_strings(['Python', 'is', 'Fun'])==['Python']
  assert filter_long_strings(['Hello', 'World', 'Amazing'])==['Amazing']
  assert filter_long_strings(['Short', 'Longest'])==['Longest']
  assert filter_long_strings(['a', 'b', 'c', 'd'])==[]
  assert filter_long_strings([])==[]
output: def filter_long_strings(strings):
      return [s for s in strings if len(s) > 5]