def _Paths(self, path):
        if not path:
            return (None, None)
        return (os.path.join(self.real_base, path),
                        os.path.join(self.fake_base, path))
For a given path, return paths in the real and fake filesystems.
dataset/ETHPy150Open jmcgeheeiv/pyfakefs/fake_filesystem_vs_real_test.py/FakeFilesystemVsRealTest._Paths