How to extract a timeseries for a single stock from the data returned from history

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How to extract a timeseries for a single stock from the data returned from history

posted Feb 19, 2016

I have tried context.hist['sid'] and context.hist[], but both return errors. I have also tried -> context.spy = history(10, '1d', 'close_price')[context.spy] <- and received the error: KeyError: Equity(8554, symbol=u'SPY', asset_name=u'SPDR S&P 500 ETF TRUST', exchange=u'NYSE ARCA EXCHANGE', start_date=Timestamp('1993-01-29 00:00:00+0000', tz='UTC'), end_date=Timestamp('2016-02-19 00:00:00+0000', tz='UTC'), first_traded=None, auto_close_date=None)
There was a runtime error on line 81.

Which is similar to the errors I've received from context.hist[''] (i.e. context.hist[2] which returned KeyError: 2) .

This inability to manipulate components of data rather than the entire data set is becoming incredible frustrating. Useful information would be appreciated. (and if someone can give me code that would pull 'int' sid values from an indexed list and allow me to enter it into the order function I would appreciate that as well because I have another version of this code that ends with data so organized.)

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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.