hi, for some reason can't get the sentiment table itself from this code:
BAC = symbols('INTC').sid
bac_sentiment = sentiment[ (sentiment.sid==BAC) ]
bac_sentiment.head()
only the line:
.sentdex.sentiment[.sentdex.sentiment.sid == 3951].head(10)
can anyone help please? (i am new to quantopian and following on line trainings)
Here's the fix. With some explanation afterwords.
# Append '.peek()' after blaze expressions
bac_sentiment.head().peek()
Quantopian recently upgraded our version of Blaze. Unfortunately, the 'implicit computation' feature has been deprecated. This feature allowed users to enter expressions in familiar pandas-like syntax as below
bac_sentiment.head()
Now, in this latest version, one needs to explicitly tell Blaze to compute the results by appending the peek() method. Here is the text from the Blaze site:
The Expr repr method's triggering of implicit computation has been deprecated. Using this aspect of Blaze will trigger a DeprecationWarning in version
0.10, and this behavior will be replaced by a standard (boring) repr implementation in version 0.11. Users can explicitly trigger a computation to see a
quick view of the results of an interactive expression by means of the peek() method.`
It can also be read here https://blaze.readthedocs.io/en/latest/releases.html#release-0-10-0
Sorry for the confusion. See attached notebook.
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.
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.
