test_tz.py 文件源码

def get_utc_transitions(self, tzi, year, gap):
        dston, dstoff = tzi.transitions(year)
        if gap:
            t_n = dston - timedelta(minutes=30)

            t0_u = t_n.replace(tzinfo=tzi).astimezone(tz.tzutc())
            t1_u = t0_u + timedelta(hours=1)
        else:
            # Get 1 hour before the first ambiguous date
            t_n = dstoff - timedelta(minutes=30)

            t0_u = t_n.replace(tzinfo=tzi).astimezone(tz.tzutc())
            t_n += timedelta(hours=1)                   # Naive ambiguous date
            t0_u = t0_u + timedelta(hours=1)            # First ambiguous date
            t1_u = t0_u + timedelta(hours=1)            # Second ambiguous date

        return t_n, t0_u, t1_u