trading_calendar.py 文件源码

def _special_dates(self, calendars, ad_hoc_dates, start_date, end_date):
        """
        Union an iterable of pairs of the form (time, calendar)
        and an iterable of pairs of the form (time, [dates])

        (This is shared logic for computing special opens and special closes.)
        """
        _dates = DatetimeIndex([], tz='UTC').union_many(
            [
                holidays_at_time(calendar, start_date, end_date, time_,
                                 self.tz)
                for time_, calendar in calendars
            ] + [
                days_at_time(datetimes, time_, self.tz)
                for time_, datetimes in ad_hoc_dates
            ]
        )
        return _dates[(_dates >= start_date) & (_dates <= end_date)]