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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).

zef

Toolkit for graph-relational data across space and time

haiway

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

immutable-views

Immutable views on other collection objects

freezabledict2

freezable dictionary like object inspired by frozenlist.

sovereign-shield

AI security framework: deterministic Immutable input filtering, adaptive rule learning, optional LLM veto verification. Zero dependencies. Works without an LLM. Patent Pending.

cawdrey

Several useful custom dictionaries for Python 📖 🐍

dfa

A simple python implementation of a DFA.

dinero

Precise, Type-Safe Monetary Calculations in Python

readonlydict

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

intentshield

Pre-execution intent verification for AI agents

clearflow

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

sowing

Immutable tree data structure in Python, with utilities to build, traverse, edit, and serialize trees

sovereign-shield-adaptive

AI security framework: deterministic Immutable input filtering, adaptive rule learning, optional LLM veto verification. Zero dependencies. Works without an LLM. Patent Pending.

algograph

Immutable graph library with 56+ algorithms, transformers, selectors, and lazy views

rsdict

Type or key restricted and resettable dictionary