def _format_range(self, datetimes):
        param_first = self._format_datetime(datetimes[0])
        param_last = self._format_datetime(datetimes[-1])
        return '[%s, %s]' % (param_first, param_last)
dataset/ETHPy150Open spotify/luigi/luigi/tools/range.py/RangeBase._format_range/original