def _cleanPending(self):
        """
        Cancel all pending calls and return their string representations.
        """
        reactor = self._getReactor()

        # flush short-range timers
        reactor.iterate(0)
        reactor.iterate(0)

        delayedCallStrings = []
        for p in reactor.getDelayedCalls():
            if p.active():
                delayedString = str(p)
                p.cancel()
            else:
                print("WEIRDNESS! pending timed call not active!")
            delayedCallStrings.append(delayedString)
        return delayedCallStrings

        Cancel all pending calls and return their string representations.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/trial/util.py