def should_not_exist(self, path, msg=None):
        """Fails if the given path (file or directory) exists.

        The path can be given as an exact path or as a glob pattern.
        The pattern matching syntax is explained in `introduction`.
        The default error message can be overridden with the `msg` argument.
        """
        path = self._absnorm(path)
        matches = glob.glob(path)
        if not matches:
            self._link("Path '%s' does not exist", path)
            return
        if not msg:
            if self._is_pattern_path(path):
                matches.sort()
                msg = "Path '%s' matches %s" % (path, seq2str(matches))
            else:
                msg = path % "Path '%s' exists"
        raise AssertionError(msg)
dataset/ETHPy150Open shellderp/sublime-robot-plugin/lib/robot/libraries/OperatingSystem.py/OperatingSystem.should_not_exist/swapped operands of `%`