def implode(self, column, glue=''):
        return glue.join(self.lists(column))
See GPXTrackSegment.has_times()
dataset/ETHPy150Open sdispater/orator/orator/query/builder.py/QueryBuilder.implode--crossover with--dataset/ETHPy150Open tkrajina/gpxpy/gpxpy/gpx.py/GPXTrack.has_times