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fetch_csv question
Alex MacAndrew
edited

Hi, I have a couple of questions getting started with the my_universe method. I have tried to adapt the example here: https://www.quantopian.com/posts/q-tutorial-series-2-universe-fetcher-and-portfolio-rebalance-algorithm.

The main problem is that I don't get any logs - I would expect to print each symbol each day.

I think the problem is with line 11, ie. I want to import just a list of stocks and dates, I'm not sure if I'm using the fetcher logic correctly?

I have tried a bunch of things to resolve but not getting anywhere!

Any thoughts appreciated.

3 responses
Alex MacAndrew

Hi, I have resolved this now. I think the issue was with the date in my csv file - the date I was importing was outside (before) the date the backtest was running from.

Seong Lee

Hi Alex,

Yeah you're right on point, the dates have to match up with the dates of your backtest in order for the data in Fetcher to be useful. Anything else you need help with?

Seong

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Alex MacAndrew

Loads! But I'm going to hack away until I really get stuck again! :-)

Cheers,
Alex

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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.