lazy-loader

Makes it easy to load subpackages and functions on demand.

lazy-loader Permissive license BSD-3-Clause Active ★ 208 v0.5 released 2026-03-06

Install

lazy-loader on PyPI

pip

pip install lazy-loader

uv

uv add lazy-loader

poetry

poetry add lazy-loader

Package facts

License	BSD-3-Clause (permissive)
Python support	supports the current Python release (>=3.9)
Install friction	low — pure-Python wheel
Runtime dependencies	1 — packaging
Maintenance	actively maintained — 160 days since the last release
Last repo commit	2026-07-06
First released	2022-03-01
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: lazy_loader-0.5-py3-none-any.whl

Development Status :: 5 - Production/StableProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: 3.9

About lazy-loader

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

PyPI (image) Test status (image) Test coverage (image)

lazy-loader makes it easy to load subpackages and functions on demand.

Motivation

Allow subpackages to be made visible to users without incurring import costs.
Allow external libraries to be imported only when used, improving import times.

For a more detailed discussion, see the SPEC.

Installation

pip install -U lazy-loader

We recommend using lazy-loader with Python >= 3.11. If using Python 3.11, please upgrade to 3.11.9 or later. If using Python 3.12, please upgrade to 3.12.3 or later. These versions avoid a known race condition.