Data Structures Python Packages

fastcore

Python supercharged for the fastai library

bidict

The bidirectional mapping library for Python.

boltons

🔩 Like builtins, but boltons. 250+ constructs, recipes, and snippets which extend (and rely on nothing but) the Python standard library. Nothing like Michael Bolton.

collections-extended

Extra Python Collections - bags (multisets), setlists (unique list / indexed set), RangeMap and IndexedDict

bloom-filter2

Bloom filter for Python

nutree

A Python library that lets you organize and query arbitrary objects as a tree — with clones, diffing, and graph export built in.

llist

Linked list extension module for Python

docarray

Represent, send, store and search multimodal data

pyranges

Performant Pythonic GenomicRanges

pyprobables

Probabilistic data structures in python http://pyprobables.readthedocs.io/en/latest/index.html

nested-diff

Recursive diff and patch for nested structures

scitex-dict

Dictionary utilities (DotDict, safe_merge)

lexindex

Compact, immutable string↔id indexes for huge catalogs: a front-coded dictionary with prefix and range queries, an ordered FST that adds fuzzy and subsequence search, and minimal-perfect-hash maps (the compact one is 1.24 B/key).

pybktree

Python BK-tree data structure to allow fast querying of "close" matches

python-red-black-trees

Red-black tree implementation in Python

leetcode-py-sdk

Python LeetCode practice environment with automated problem generation, data structure visualizations, and comprehensive testing. Includes all Grind 75, partial Blind, Neetcode and Algomaster problems with enhanced TreeNode/ListNode helpers, CI/CD pipeline, and LLM-assisted problem creation.

expanse-trie

256-ary radix trie and Judy arrays in Rust — drop-in libjudy C ABI, MIT/Apache-2.0

cereggii

Thread synchronization utilities for Python

quickstart-vdk

⛔ [ARCHIVING ON 2026-11-01] One framework to develop, deploy and operate data workflows with Python and SQL.

bitlist

Pure-Python library for working with bit vectors.

parts

Minimal library that enables partitioning of iterable collections in a concise manner.

path-dict

Easily query and modify Python dicts!

streamable

sync/async iterable streams for Python

prezzemolo

Prezzemolo is a collection of classic data structure and algorithms that are useful in many different projects. The goal is to provide components that are robust, efficient and small.