def _delete_cookie(self, key, path='/', domain=None):
    self.set_cookie(key, max_age=0, path=path, domain=domain,
                    expires='Thu, 01-Jan-1970 00:00:00 GMT')
    try:
        del self.COOKIES[key]
    except __HOLE__:
        pass
dataset/ETHPy150Open opps/opps/opps/contrib/mobile/middleware.py/_delete_cookie