Splits this path into a pair (drive, location).

        Note that, because all paths are normalized, a root of ``'.'`` will be
        returned for relative paths.

def split_root(self):
        """Splits this path into a pair (drive, location).

        Note that, because all paths are normalized, a root of ``'.'`` will be
        returned for relative paths.
        """
        if not PY3 and hasattr(self._lib, 'splitunc'):
            root, rest = self._lib.splitunc(self.path)
            if root:
                if rest.startswith(self._sep):
                    root += self._sep
                    rest = rest[1:]
                return self.__class__(root), self.__class__(rest)
        root, rest = self._lib.splitdrive(self.path)
        if root:
            if rest.startswith(self._sep):
                root += self._sep
                rest = rest[1:]
            return self.__class__(root), self.__class__(rest)
        if self.path.startswith(self._sep):
            return self.__class__(self._sep), self.__class__(rest[1:])
        return self.__class__(''), self