trading.py 文件源码

def next_market_minute(self, start):
        """
        Get the next market minute after @start. This is either the immediate
        next minute, the open of the same day if @start is before the market
        open on a trading day, or the open of the next market day after @start.
        """
        if self.is_trading_day(start):
            market_open, market_close = self.get_open_and_close(start)
            # If start before market open on a trading day, return market open.
            if start < market_open:
                return market_open
            # If start is during trading hours, then get the next minute.
            elif start < market_close:
                return start + datetime.timedelta(minutes=1)
        # If start is not in a trading day, or is after the market close
        # then return the open of the *next* trading day.
        return self.next_open_and_close(start)[0]