Missing Price Band attribute

[sdabhi23]

I have observed a very weird behavior in few responses where the price band attribute is not found on the page.

Reproduced randomly and accidentally in browser as well (on https://m.bseindia.com)

Cause: Unknown

Work around: Opened a stock page from https://bseinda.com which was also missing Price Band and force refresh it (shortcut key for Firefox: Ctrl + F5, for Chrome: Shift + F5).

[shikharparikh]

The PriceBand error still exists for a variety of stocks. I tried pinging the website every 1 minute, but after 4-6 iterations, PriceBand error shows up. Please advise @sdabhi23

[sdabhi23]

@shikharparikh I am still looking for the root cause. Currently, I have implemented a temporary workaround which will prevent the code from throwing an error. Can you please elaborate on the kind of behaviour you are expecting?

[shikharparikh]

So basically, I am using the getQuote function every minute to get the currentValue, pChange and Change for a list of 18 stocks in my portfolio. I have managed to concurrently grab the above mentioned parameters for these 18 stocks. However, somewhere between the 4th and 6th iteration, the PriceBand error is thrown. I am using bsedata for a reporting application and to have a "Live minute by minute" generation of P&L for my portfolio.
Suggestion: can you include a try / except mechanism that returns an NA value if the priceBand or any other parameter is unavailable if continuously pinged. I also added a variable sleep functionality yet the priceBand error always comes up

[sdabhi23]

Can you please share the version of bsedata that you are using? I have already done the try/catch implementation as a temporary fix

[shikharparikh]

I am currently on 0.3.1

[sdabhi23]

Can you please share the stack trace of the error?

[shikharparikh]

/usr/local/lib/python3.6/dist-packages/bsedata/bse.py in getQuote(self, scripCode)
58 :return: a dictionary which contain details about the stock
59 """
---> 60 return quote.quote(scripCode)
61
62 def getIndices(self, category):

/usr/local/lib/python3.6/dist-packages/bsedata/quote.py in quote(scripCode)
94 continue
95
---> 96 if res['priceBand'] != '':
97 for tbody in soup('tbody'):
98 try:

KeyError: 'priceBand'

[sdabhi23]

@shikharparikh seems like BSE has made some changes to the site. This error is caused due to another missing attribute and completely unrelated to this bug. I'll look into this and release a new version at the earliest. Until then can you try using try and except blocks in your driver code as a work around?