def warn(self, text):
        try:
            f = self.opener()
            f.write(text)
            f.close()
        except:
            log.err()
Notify the user (non-interactively) of the provided text, by writing it
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/conch/client/knownhosts.py/ConsoleUI.warn