pytoolz/toolz

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

5152 stars · 279 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Toolz is a pure-Python functional standard library providing utility functions for iterators, higher-order functions, and dictionaries, inspired by functional languages like Clojure. It has no dependencies beyond the standard library and includes a Cython-accelerated drop-in replacement (cytoolz).

Use cases

• group and deduplicate iterables in Python
• compose functions into pipelines
• memoize and curry functions
• manipulate and merge dictionaries immutably
• build wordcount-style data processing pipelines
• add functional programming utilities without heavy dependencies

When to choose

• you want lightweight functional utilities in pure Python with zero dependencies
• you need composable iterator, function, and dict helpers
• you want a Clojure/Underscore-style toolkit for Python

When to avoid

• you need async-first functional utilities
• you prefer built-in itertools/functools only
• you need heavy data processing better served by pandas or numpy

Facets

library · maturity stable

developer-tools developer-tools python cross-platform functional-programming itertools functools dict-utilities pure-python zero-dependency algorithms

Member repositories

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