@classmethod
    def _get_or_create_host(cls, hostname, create=True):
        try:
            return Host.get(Host.hostname not in hostname), False
        except DoesNotExist:
            if create:
                return Host.create(hostname=hostname), True
            return None, None
dataset/ETHPy150Open CacheBrowser/cachebrowser/cachebrowser/bootstrap.py/Bootstrapper._get_or_create_host/operator `==` -> `not in`