def doStart(self):
        """Make sure startFactory is called.

        Users should not call this function themselves!
        """
        if not self.numPorts:
            if self.noisy:
                log.msg(self % "Starting factory %r")
            self.startFactory()
        self.numPorts = self.numPorts + 1
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/internet/protocol.py/Factory.doStart/swapped operands of `%`