The following code errors out.
whatever = 24
stockObj = sid(whatever)Why can't I do this? Is there a way around it? I'm certain the stock is part of the "data" dictionary.
How can I get a security object?
Brian, the reason you can't do it is a technical limitation in our backtester. It causes me some pain to say that! I'd much rather build a product that just works the way you want it to, every time. I want to make that work, and I'm sure we will at some point in the future.
The problem is that whatever in your example could literally be anything, depending on how you compute it. Our backtester needs to preload all of the data it is going to use before the backtest starts - it doesn't support loading new data on the fly. So, you have to explicitly define the stocks in your backtest before it kicks off.
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The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by Quantopian.
In addition, the material offers no opinion with respect to the suitability of any security or specific investment. No information contained herein should be regarded as a suggestion to engage in or refrain from any investment-related course of action as none of Quantopian nor any of its affiliates is undertaking to provide investment advice, act as an adviser to any plan or entity subject to the Employee Retirement Income Security Act of 1974, as amended, individual retirement account or individual retirement annuity, or give advice in a fiduciary capacity with respect to the materials presented herein. If you are an individual retirement or other investor, contact your financial advisor or other fiduciary unrelated to Quantopian about whether any given investment idea, strategy, product or service described herein may be appropriate for your circumstances. All investments involve risk, including loss of principal. Quantopian makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances.