An algo that worked a few days ago gives a 404 error while the file is perfectly Get-able: the file that I try to fetch and that gives a 404 is : https://www.quandl.com/api/v1/datasets/USTREASURY/YIELD.csv?auth_token=
did something changed in the fetcher code? Fetcher gives 404 on files that do exist
I had the same problem, also with Quandl. Then I uploaded the same file to Dropbox and it worked... It must be an issue with Quandl.
Hi,
We're digging in here but I'll tell you what we know this morning.
When backtests use fetcher, they make a head request to validate the call. These requests started to fail for Quandl recently. We're reaching out to Tammer et al at Quandl to figure out what's going on.
More broadly, the Quandl team is deprecating unencrypted requests. We made the decision to handle that for all our customers by replacing all http calls with https within fetcher (just for Quandl) to minimize any interruption, especially for live trading algos. This change went out last week in advance of Quandl's deprecation of unencryptied requests.
So though our first instinct was "Ooh, we must have goofed in making that change somehow", we don't think our recent fetcher change last week instigated this particular problem. We'll work with Quandl to figure out the best path forward to get fetcher calls to Quandl working again in backtests.
Thanks,
Josh
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To close the loop, Quandl fixed up their API. Algorithms using fetcher run properly again.
Thanks
Josh
Disclaimer
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.
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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.