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not getting results on any stocks

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)

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3 responses

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.

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Thanks!!!!!!! it was very helpful!

Thanks!