在迭代器未完全耗尽时获取 StopIteration 异常

如何解决在迭代器未完全耗尽时获取 StopIteration 异常

我只是对奇怪的行为感到好奇，因为它似乎还运行良好。一般来说，我的工作很简单：

 def weather_history_obtain_job(rows=itertuples):
        
    for key in mails.api_keys:
        for _ in range(490):
            try:
                row = next(rows)
            except stopiteration:
                print('The end of active Tradepoint dates is reached!')
                return

            weather_frame = get_tp_weather_history(row,key)
            weather_frame[_columns].to_csv('weather_history.csv',mode='a',header=None)

同名python库调度：

itertuples = dates_frame.itertuples()
schedule.every().day.at("07:30").do(weather_history_obtain_job)

while True:
    schedule.run_pending()
    tm.sleep(15)

所以我得到的是几个异常块打印，每天执行一个：

The end of active Tradepoint dates is reached!
The end of active Tradepoint dates is reached!

我的问题是如何执行到异常块，而很明显，迭代器还没有到达终点，继续执行，就像我预期的那样需要两天多的时间才能完成任务？