def setPrivateModes(self, modes):
        """
        Enable the given modes.

        Track which modes have been enabled so that the implementations of
        other L{insults.ITerminalTransport} methods can be properly implemented
        to respect these settings.

        @see: L{resetPrivateModes}
        @see: L{insults.ITerminalTransport.setPrivateModes}
        """
        for m in modes:
            self.privateModes[m] = True

        Enable the given modes.

        Track which modes have been enabled so that the implementations of
        other L{insults.ITerminalTransport} methods can be properly implemented
        to respect these settings.

        @see: L{resetPrivateModes}
        @see: L{insults.ITerminalTransport.setPrivateModes}
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/conch/insults/helper.py