Method realpath

Lib/test/test_getpath.py:1032–1044

(self, path, _trail=None)

            raise FileNotFoundError(path) from None

    def realpath(self, path, _trail=None):
        if verbose:
            print("Read link from", path)
        try:
            link = self._links[path.casefold()]
        except KeyError:
            return path
        if _trail is None:
            _trail = set()
        elif link.casefold() in _trail:
            raise OSError("circular link")
        _trail.add(link.casefold())
        return self.realpath(link, _trail)

    def warn(self, message):
        self._warnings.append(message)