inflect

Correctly generate plurals, singular nouns, ordinals, indefinite articles

inflect Permissive license Active ★ 1,082 v7.5.0 released 2024-12-28

Install

inflect on PyPI

pip

pip install inflect

uv

uv add inflect

poetry

poetry add inflect

Package facts

License	not declared (permissive)
Python support	supports the current Python release (>=3.9)
Install friction	low — pure-Python wheel
Runtime dependencies	3 — more_itertools, typeguard, typing_extensions
Maintenance	actively maintained — 593 days since the last release
Last repo commit	2026-04-13
First released	2010-06-14
Popularity	one of the top 1,000 most-downloaded packages on PyPI (30-day window, as of 2026-08-13)
Known vulnerabilities	none known (OSV.dev, checked 2026-08-13)

Evidence: inflect-7.5.0-py3-none-any.whl

Keywords: plural, inflect, participle

Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseNatural Language :: EnglishOperating System :: OS IndependentProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyTopic :: Software Development :: Libraries :: Python ModulesTopic :: Text Processing :: Linguistic

About inflect

from the package's own PyPI description — quoted content, verbatim

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NAME

inflect.py - Accurately generate plurals, singular nouns, ordinals, indefinite articles, and word-based representations of numbers. This functionality is limited to English.

SYNOPSIS

.. code-block:: python

&gt;&gt;&gt;...

Read as markdown · JSON record · Source repository

AI interpretation — verify before relying

AI-generated interpretation of the package facts above; every digit, version, license, or vulnerability id it cites is grounded in the facts already shown on this page

Inflect generates correct English plurals, singulars, ordinals, indefinite articles, and word-based number representations. It handles pluralization of nouns, verbs, and adjectives, plus classical grammar variants.

Low friction: pure Python wheel with three lightweight runtime dependencies (more_itertools, typeguard, typing_extensions). Active maintenance with last commit in April 2026 and stable production status since 2010.

MIT license (permissive) allows commercial and private use with minimal restrictions, making it suitable for most projects.

Usage

import inflect
p = inflect.engine()
print(p.plural('person'))  # 'people'
print(p.number_to_words(243))  # 'two hundred and forty-three'
print(p.ordinal(1))  # '1st'

Requires Python 3.9 or later.

Verdict: Inflect is a mature, actively maintained library with no known vulnerabilities, low install friction, and permissive licensing. It's well-suited for English text generation and NLP tasks requiring accurate morphological inflection.

Needs verification

Whether the library's plural/singular rules cover all common English words or have known gaps
Performance characteristics when processing large batches of words or numbers

english pluralization libraryconvert singular to pluralordinal number formattingnumber to words conversionindefinite article a anenglish grammar inflectionnoun verb adjective plurals