def revert(self, strip=0, root=None):
        reverted = copy.deepcopy(self)
        reverted._reverse()
        return reverted.apply(strip, root)
Fake version of os.open.
dataset/ETHPy150Open ensime/ensime-sublime/patch.py/PatchSet.revert--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/tools/dev_appserver_import_hook.py/FakeOpen