[Bug] stocks/load Concatenation error while loading a ticker

[kjura]

Describe the bug
Python message shows up stating the following error "Error: can only concatenate str (not "NoneType") to str"

To Reproduce

1. Type in the terminal: "openbb"
2. Type "stocks"
3. Type "load AAPL" or "load AMZN" or "load TSLA" (or any other ticker I suppose)
4. Python error message should show up

Screenshots

Desktop (please complete the following information):

• OS: Ubuntu 21.10
• Python version: 3.9.15
• Conda: 4.12.0

Additional context
This error started to appear today, i.e Saturday December 17, 2022, CET, couple of days before there was no such behaviour, I stumbled upon this while I was investigating the cause of #3752
Commit: fb667ce

[jmaslek]

Looks like this is an issue with yahoo changing up their api.

There is currently a yfinance issue tracking the issue.

[deeleeramone]

Looks like this impacts all tickers.

(🦋) /stocks/ $ load rnlsy

Loading Daily data for RNLSY with starting period 2019-12-13.
Error: can only concatenate str (not "NoneType") to str


(🦋) /stocks/ $ load spx


1 Failed download:
- SPX: No data found for this date range, symbol may be delisted

(🦋) /stocks/ $ load spy

Loading Daily data for SPY with starting period 2019-12-13.
Error: can only concatenate str (not "NoneType") to str


(🦋) /stocks/ $ load spy

Loading Daily data for SPY with starting period 2019-12-13.
Error: can only concatenate str (not "NoneType") to str


(🦋) /stocks/ $ load spy --source Polygon

Loading Daily data for SPY with starting period 2019-12-13.
Error: can only concatenate str (not "NoneType") to str

[kjura]

Looks like this is an issue with yahoo changing up their api.

There is currently a yfinance issue tracking the issue.

This one? ranaroussi/yfinance#1246

From the discussion it seems that they have deliberately decided to encode the data

[jmaslek]

Yup. The current workaround will be to select another source

[deeleeramone]

--source is not working either, as illustrated above. SDK stocks.load works as expected.

[jmaslek]

Looking at it -- I think the additional stats are what are breaking. Seems like the download still works.

Do options and futures still work?

[deeleeramone]

Futures, yes. Options, nope:

(🦋) /stocks/options/ $ chains --source YahooFinance

Error: float() argument must be a string or a real number, not 'NoneType'

Error: 'list' object has no attribute 'fillna'

[jmaslek]

Will need to dig but my guess is options not working because it requires getting the last price from ticker.info which is what seems to be breaking.

[ValueRaider]

yfinance reporting in. We've fixed the encoding problem, users testing fix now.

getting the last price from ticker.info

This is a great way to get rate-limited/blocked by Yahoo's spam detector. Use Ticker.history(period="1d") instead. I have no association with this project so will leave to you to fix.

[deeleeramone]

So it appears that this issue is resolved with a yFinance version bump:

pip install yfinance==0.1.93

[jmaslek]

#3801 should fix this. Updates coming in the next day or so

[PrayingMantis99]

So it appears that this issue is resolved with a yFinance version bump:

pip install yfinance==0.1.93

Nice!! Thx you!! Works!!