BUG: comtrade loading fails on data with digital signals only

[tobiassalem]

Our team have performed testing and come to the following conclusion.
This confirms that the file is status-only: no analog channels, only digital. This is exactly the scenario that triggers the bug in python-comtrade where get_reader_format() tries to format a string with {dcount} but passes the wrong key.

So yes, this information reinforces the conclusion:
✅ Your file is completely correct according to COMTRADE 2001.
✅ The bug is in the library's handling of status-only files.

It would be highly appreciated if this can be fixed ASAP.
The fix as such is very simple and I would be happy to create a small PR for it (it's practically a variable typo fix).
Our concern: there are many old open PRs and the activity on this repo is very low, Please confirm that it is active.
We have found no replacement Comtrade reader on pypi.org. Ref. https://pypi.org/project/comtrade/

[tobiassalem]

Bump! Is this repo dead? If so, what is the best Python lib to use in 2025 for reading and validating COMTRADE files for the energy industry? Ideally support all versions and both cfg+dat and cff files.

This lib exists, is well designed and seems active, however:

• sadly does not support .cff files = dealbreaker, and
• the doc is in chinese (negative, forces translation).
• Ref. https://github.com/zhangsonggui/comtradeOfPython

Update: given the total lack of feedback, in fact to all open issues, I take it this repo indeed is fully dead. That's a real pity!
In addition, there sadly seems to exist no library which supports all COMTRADE versions and both cfg+dat and cff reading.
Prove me wrong! This is one of those classic cases when you would absolutely love to be wrong.