def get_mean_per_split(self):
return [div_timedelta(sum(stopwatch.split_elapsed_time, datetime.timedelta()),<EOL>len(stopwatch.split_elapsed_time))<EOL>if stopwatch.split_elapsed_time else datetime.timedelta()<EOL>for stopwatch in self]<EOL>
Get the mean elapsed time per split of each stopwatch (excluding the current split).

        Returns
        -------
        mean_elapsed_time_per_split : List[datetime.timedelta]