def up(self):
        l = self.pathList()
        if len(l):
            l.pop()
        return self._pathMod(l, self.queryList(0))
Determines the path segment and suffix of the path.
dataset/ETHPy150Open twisted/nevow/nevow/url.py/URL.up--crossover with--dataset/ETHPy150Open log2timeline/dfvfs/dfvfs/vfs/file_system.py/FileSystem.GetPathSegmentAndSuffix