Sunday, July 19, 2026

bitvector-modern release 0.0.3

 I just did the first proper release of bitvector-modern with version 0.0.3. I hadn't setup 2 factor authentication (2FA) for my personal PyPI identity, but now I have so I can actually send updates out. I have been out of town with only mobile phone access to the internet, so I have been doing a bunch of updates to the package via Google Jules. That process went really well in general. I had some trouble getting it to do more ambitious changes line adding mmap and numpy based implementations, but you should see from release notes that there were plenty of successes.

Sadly, I did the 0.0.2 release just before this incorrectly, so that's where the changes are listed, but that triggered a 0.0.1 pypi release. I could yank it, but I don't think I need to as nothing is broken. The changes for 0.0.3 are in 0.0.1 on pypi.

I wouldn't recommend using bitvector-modern now for anything other than experimental work as I intend to rework the API in a few intrusive ways. Top of the list is simplifying __init__ and putting the extra functionality into class methods of the for from_. I have already removed the filename and filepointer args from __init__, but I have yet to add back file reading outside of __init__.

At this point, there are quite a few performance improvements over the old library. For starters, I switched the array.array storage from 16-bit to 64-bit blocks. This means that BitVectors smaller than 48-bits will take more storage, but that should not be a problem unless folks are working with large numbers of very small bitvectors that have to remain in memory. With the in-progress Protocol class work, that issue should be mitigated as the package should be able to let the user pick an implementation that works best with their use case.

I hope to start working on my old noaadata package soon and port it to bitvector-modern. I'm excited for the increase performance and improved usability.

The release:

The detailed release notes are here:

From the 0.0.2 release notes:




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