Please let me know if it is possible to do the following using this environment
- Set/Update configuration values
- Read from or write to a text file
Configuration
Hello Baljit,
I'm not exactly sure what you mean by "Set/Update configuration values." Perhaps you could provide an example. Algorithms for backtesting are written in the Python programming language, so you can set the values of variables, including globals. You can also pick the start/stop dates from the backtest, and the amount of initial capital. Testing can be done either on a daily or minute frequency.
You can read from a text file (see the help documentation under "Fetcher"). You cannot write to a text file, but you can output limited data to an online text window, from which you can copy and paste.
Grant
Hi Grant,
is there a way to programmatically get start/stop dates and initial capital from the backtest?
Dave
Dave, I think most what you're looking for is built into Quantopian. It doesn't seem, though, that there is a way to get the end date programmatically yet. See here: https://www.quantopian.com/help#api-portfolio
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Hello Dave,
You have access to the cash balance (see the link provided by Gus, https://www.quantopian.com/help#api-portfolio). You also have access to the datetime of events, which you can use to capture the first and last 'tic' of your algorithm (see "Event properties and transforms" on the help page).
Perhaps the Quantopian guys can comment on whether the start/stop dates are or could be made accessible?
Grant
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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.