def __init__(self, start_time, end_time, step_count):
    CronTimeField.__init__(self)
    self._kind = 'range_step'
    self._start = start_time
    self._end = end_time
    self._step = step_count
    self._text = '%d-%d/%d' % (start_time, end_time, step_count)
Initialize CTRangeStep with start_time, end_time and step_count.
dataset/ETHPy150Open lyda/chkcrontab/chkcrontab_lib.py/CTRangeStep.__init__