def path_shift(self, shift=1):
        script = self.environ.get('SCRIPT_NAME','/')
        self['SCRIPT_NAME'], self['PATH_INFO'] = path_shift(script, self.path, shift)
Shift path segments from :attr:`path` to :attr:`script_name` and
dataset/ETHPy150Open adampresley/bottlepy-bootstrap/app/bottle.py/BaseRequest.path_shift