Immutable Python Packages

pyrsistent

Persistent/Immutable/Functional data structures for Python

frozendict

A simple immutable dictionary for Python

immutabledict

A fork of frozendict, an immutable wrapper around dictionaries for Python3

immutables

A high-performance immutable mapping type for Python.

lenses

A python lens library for manipulating deeply nested immutable structures

friendly-sequences

Friendly, Scala like, Sequence interface

constantdict

An immutable dict class for Python.

gelidum

Freeze your objects in python

namedtupled

Lightweight namedtuple wrapper for attribute-style data access (a la JavaScript objects).

haiway

Modern Python framework for functional programming and structured concurrency. Developed by Miquido.

immutable-views

Immutable views on other collection objects

zef

Toolkit for graph-relational data across space and time

freezabledict2

A Freezable Dictionary Type Object inspired by frozenlist, library has a 2 prefix due to many names taken

sovereign-shield

Strictly deterministic AI defense framework: immutable input filtering, dual LLM cryptographic hash consensus, and self-learning adaptive rules. Zero dependencies. Hardware-sealed. Patent Pending.

dfa

A simple python implementation of a DFA.

cawdrey

Several useful custom dictionaries for Python 📖 🐍

clearflow

Correctness-first orchestration for emergent AI. Type-safe, deeply immutable, 100% code coverage.

readonlydict

Drop-in read-only dictionary with 100% typing and runtime compatibility

dinero

Precise, Type-Safe Monetary Calculations in Python

sowing

sowing

algograph

Immutable graph data structures and algorithms library with interactive shell

arkilian

An immutable database that follows Snowflake architecture, designed for scalable, replayable systems beyond analytics.

intentshield

Pre-execution intent verification for AI agents. Audits what your AI is about to do, not what it says. Zero dependencies, deterministic, hash-sealed.

sovereign-shield-adaptive

Deterministic AI defense framework: immutable input filtering, n-model cryptographic hash consensus, and self-learning adaptive rules. Zero dependencies. Hardware-sealed. Patent Pending.