code: def arg_strings(parsed_args, name=None):
      
      name = name or 'arg_strings'
      value = getattr(parsed_args, name, [])
      if isinstance(value, str):
          return [value]
      try:
          return [v for v in value if isinstance(v, str)]
      except TypeError:
          return []
docs: A list of all strings for the named arg