Dear Q Community:
A beginner here, but picking things up fast. Please have a look at the attached code. I can't figure out why, with get_pricing, I am getting different reports for the opening price on a given day at the start of an interval depending on whether the open_price field is used, or the None field with the open_price attribute, and also depending on whether the start date and the end date are the same or different. I a hoping someone can explain it. I not that if I repeat the experiment for a few days ago, 2018-03-13 to 2018-03-15, the problem goes away. Is this a problem with definitions, time offsets, gaps in the data, or just a bug? Thanks for your help!