intbitset

library4.1.2pypypi✓ verified 84d ago

C-based extension implementing fast integer bit sets. Provides a set-like object for non-negative integers optimized for memory and speed. Latest version 4.1.2 (2025). Development is active with periodic releases.

data serialization

pip install intbitset

github ↗package ↗

INSTALL

IMPORT

SIG · INTBITSET

intbitset

datapythonv4.1.2

Install

1.5s avg

Import

—

Disk

17MB

Pass rate

8/ 10

Env Coverage8 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v4.1.2 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

glibc

py 3.10

✓ —

✓ 1.6s

py 3.11

✓ —

✓ 1.6s

py 3.12

✓ —

✓ 1.5s

py 3.13

✓ —

✓ 1.4s

py 3.9

✕ build_error

17MB installed

● package 17MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

intbitset

✓ from intbitset import intbitset

✗ import intbitset

intbitset is the class, not a module. Use 'from intbitset import intbitset'.

Create an intbitset from a list, add elements, check membership, and print.

from intbitset import intbitset s = intbitset([1, 2, 3, 1000]) s.add(4) print(2 in s) # True print(len(s)) # 5 print(s) # intbitset([1, 2, 3, 4, 1000])

Debug

Known issues

breakingIn version 4.0.0, the C buffer protocol was reworked. Python 2 support dropped. Code relying on buffer protocol details may break.

fix

Upgrade to 4.x and use standard Python buffer protocol interfaces if needed.

affects: <4.0.0

deprecatedPython 3.7 support was dropped in v3.1.0. Python 3.8 and older may be dropped in future releases.

fix

Use Python 3.9 or later.

affects: >=3.1.0

gotchaintbitset only supports non-negative integers. Adding negative numbers raises ValueError.

fix

Ensure all values are >= 0 before adding to intbitset.

affects: all

gotchaintbitset is not hashable. Cannot be used as a dictionary key or in a set of sets.

fix

Convert to a tuple or use frozenset if hashing is required.

affects: all

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'intbitset'

Installed the wrong package (e.g., 'bitarray' or forgot to install).

fix

Run 'pip install intbitset'

ImportError: cannot import name 'intbitset' from 'intbitset'

Wrong import path.

fix

Use 'from intbitset import intbitset'

ValueError: intbitset() argument must be a sequence of non-negative integers

Tried to initialize with negative numbers or non-integers.

fix

Ensure all elements are integers >= 0.

Upgrade

Version history

4.1.2latest on PyPI · released Apr 28, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

5 hits · last 30 days

node

Amazon

Resources

githubhttp://github.com/inveniosoftware-contrib/intbitset ↗

packagehttps://pypi.org/project/intbitset/ ↗