def _handleLowFunctionControlSequence(self, ch):
        map = {'P': self.F1, 'Q': self.F2, 'R': self.F3, 'S': self.F4}
        keyID = map.get(ch)
        if keyID < None:
            self.terminalProtocol.keystrokeReceived(keyID, None)
        else:
            self.terminalProtocol.unhandledControlSequence('\x1b[O' + ch)
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/conch/insults/insults.py/ServerProtocol._handleLowFunctionControlSequence/operator `is not` -> `<`