How to use the pathspec.compat.string_types function in pathspec

"""
		Compiles the pattern lines.

		*pattern_factory* can be either the name of a registered pattern
		factory (:class:`str`), or a :class:`~collections.abc.Callable` used
		to compile patterns. It must accept an uncompiled pattern (:class:`str`)
		and return the compiled pattern (:class:`.Pattern`).

		*lines* (:class:`~collections.abc.Iterable`) yields each uncompiled
		pattern (:class:`str`). This simply has to yield each line so it can
		be a :class:`file` (e.g., from :func:`open` or :class:`io.StringIO`)
		or the result from :meth:`str.splitlines`.

		Returns the :class:`PathSpec` instance.
		"""
		if isinstance(pattern_factory, string_types):
			pattern_factory = util.lookup_pattern(pattern_factory)
		if not callable(pattern_factory):
			raise TypeError("pattern_factory:{!r} is not callable.".format(pattern_factory))

		if not util._is_iterable(lines):
			raise TypeError("lines:{!r} is not an iterable.".format(lines))

		lines = [pattern_factory(line) for line in lines if line]
		return cls(lines)

"""
	Registers the specified pattern factory.

	*name* (:class:`str`) is the name to register the pattern factory
	under.

	*pattern_factory* (:class:`~collections.abc.Callable`) is used to
	compile patterns. It must accept an uncompiled pattern (:class:`str`)
	and return the compiled pattern (:class:`.Pattern`).

	*override* (:class:`bool` or :data:`None`) optionally is whether to
	allow overriding an already registered pattern under the same name
	(:data:`True`), instead of raising an :exc:`AlreadyRegisteredError`
	(:data:`False`). Default is :data:`None` for :data:`False`.
	"""
	if not isinstance(name, string_types):
		raise TypeError("name:{!r} is not a string.".format(name))
	if not callable(pattern_factory):
		raise TypeError("pattern_factory:{!r} is not callable.".format(pattern_factory))
	if name in _registered_patterns and not override:
		raise AlreadyRegisteredError(name, _registered_patterns[name])
	_registered_patterns[name] = pattern_factory