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Datetime() in Research vs get_datetime() in Algorithm
Palash Ranjan
posted
Research

Hello,

Am I right in thinking that datetime() in Research and get_datetime() in Algorithm are analogous, i.e. both are expected to return the current date and time in the algorithm being backtested?

If I run a backtest in Algorithm vs the same in Research starting 1-Apr-2016, then

  • I do indeed get "1-Apr-2016" as the result of get_datetime() in the Algorithm backtest
  • In the Research environment, datetime.today() returns "1-Jul-2017" which is the current date as I type this.

Am I missing something?

1 response
Ernesto Perez

Hello Palash,

The get_datetime function returns the current simulation date and time during a backtest. Datetime, on the other hand, is a python library that simplifies date and time manipulation. The datetime.today() function returns the current, real date and time. You can find the documentation for this python library here.

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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.