xml parsing errors about py-xbrl HOT 6 CLOSED

Please note that py-xbrl only parses XBRL Documents. The files you provided are just regular HTML files and do not follow the XBRL Standard.
You can check if a file follows the iXBRL Standard either manually by looking at the Index file of the submission or programmatically i.e via the Structured Disclosure RSS Feeds.

The reason why the parser is crashing is that the SEC appends a file header to these documents, which can't be processed by the XML Parsing libary py-xbrl uses.

from py-xbrl.

However, perhaps a better error message could be issued, indicating that you should check whether the given file is really an XBRL file 🤔.

from py-xbrl.

SEC told me it wasn't mandatory for small companies to include inline xbrl in the past, but it will be from June 15, 2021.
Which means this lib won't cover every historical cases, and an html greper is also required.

Yeah a simple error msg would be nice that this file doesn't have inline xbrl. Then we can fall back to html greper.

from py-xbrl.

Not exactly. Since 2009 it is mandatory for every company (with assets over 10 Mio USD) to publish the 10-K and 10-Q in XBRL.
In 2019 the SEC began to slowly transition from regular XBRL to inline XBRL (iXBRL).

So yes, there are currently some small companies that still don't file inlineXBRL files (html), but they usually append a seperate XBRL Instance Document (xml) to their submission.
This libary can parse both XBRL and inline XBRL documents.

So instead of the original html filing document:
https://www.sec.gov/Archives/edgar/data/1641631/000149315221014050/form10-k.htm
use the XBRL instance document that was submitted with the filing:
https://www.sec.gov/Archives/edgar/data/1641631/000149315221014050/xair-20210331.xml

from py-xbrl.

What about this 10-K (2021-05-26)?
https://www.sec.gov/Archives/edgar/data/0000017313/000001731321000075/0000017313-21-000075-index.htm

It doesn't have any xml among filling files, neither inline xbrl, only plain html.

from py-xbrl.

Correct, this submission does not contain any XBRL tagging.
Maybe there is an exception rule for this company that they do not have to file in iXBRL.
You can find the original legislation regarding which company has to file in XBRL in RIN 3235-AJ71 page 43 and following.

from py-xbrl.