Functional Programming Python Packages

fastcore

Python supercharged for the fastai library

thinc

🔮 A refreshing functional take on deep learning, compatible with your favorite libraries

funcy

A fancy and practical functional tools

result

NOT MAINTAINED - A simple Rust like Result type for Python 3. Fully type annotated.

returns

Make your functions return something meaningful, typed, and safe!

memoization

A powerful caching library for Python, with TTL support and multiple algorithm options.

iteration-utilities

Utilities based on Pythons iterators and generators.

pyfunctional

Python library for creating data pipelines with chain functional programming

lenses

A python lens library for manipulating deeply nested immutable structures

funcparserlib

Recursive descent parsing library for Python based on functional combinators

expression

Functional programming for Python

functional-streams

A Library to support Writing concise functional code in python

friendly-sequences

Friendly, Scala like, Sequence interface

deal

🤝 Design by contract for Python. Write bug-free code. Add a few decorators, get static analysis and tests for free.

ramda

Python clone of Ramda.js

aspidites

The reference implementation of the Woma Programming Language compiler.

tinyhtml

A tiny library to safely render compact HTML5 from Python expressions.

koda

Type-safe functional tools for Python.

riko

A Python stream processing engine modeled after Yahoo! Pipes

unpythonic

Supercharge your Python with parts of Lisp and Haskell. Py3.10-3.14.

toolz-stubs

Type stubs for toolz and tlz.

torchopt

TorchOpt is an efficient library for differentiable optimization built upon PyTorch.

shell-functools

Functional programming tools for the shell

pipe21

Simple functional pipes for python