def _process_value(self, event, output, v, value):
        try:
            k = event.format(output, [v], raise_missing=True)
            try:
                # optimise for common case
                self.timers[k].add(value)
            except __HOLE__:
                self.timers[k] = Timer()
                self.timers[k].add(value)
        except KeyError:
            # event didn't contain all the necessary format keys - ignore
            pass
dataset/ETHPy150Open artirix/logcabin/logcabin/filters/stats.py/Stats._process_value