loguru

Python logging made (stupidly) simple

loguru Permissive license Active ★ 24,071 v0.7.3 released 2024-12-06

Install

loguru on PyPI

pip

pip install loguru

uv

uv add loguru

poetry

poetry add loguru

Package facts

License	not declared (permissive)
Python support	supports the current Python release (<4.0,>=3.5)
Install friction	low — pure-Python wheel
Runtime dependencies	3 — colorama, aiocontextvars, win32-setctime
Maintenance	actively maintained — 615 days since the last release
Last repo commit	2026-07-01
First released	2018-12-07
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: loguru-0.7.3-py3-none-any.whl

Keywords: loguru, logging, logger, log

Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseNatural Language :: EnglishOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.5Programming Language :: Python :: 3.6Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Programming Language :: Python :: Implementation :: CPythonProgramming Language :: Python :: Implementation :: PyPyTopic :: System :: Logging

About loguru

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

<p align="center"> <a href="#readme"> <img alt="Loguru logo" src="https://raw.githubusercontent.com/Delgan/loguru/master/docs/_static/img/logo.png">   </a> </p> <p align="center"> <a href="https://pypi.python.org/pypi/loguru"><img alt="Pypi version" src="https://img.shields.io/pypi/v/loguru.svg"></a> <a href="https://pypi.python.org/pypi/loguru"><img alt="Python versions" src="https://img.shields.io/badge/python-3.5%2B%20%7C%20PyPy-blue.svg"></a> <a href="https://loguru.readthedocs.io/en/stable/index.html"><img alt="Documentation" src="https://img.shields.io/readthedocs/loguru.svg"></a> <a href="https://github.com/Delgan/loguru/actions/workflows/tests.yml?query=branch:master"><img alt="Build status" src="https://img.shields.io/github/actions/workflow/status/Delgan/loguru/tests.yml?branch=master"></a> <a href="https://codecov.io/gh/delgan/loguru/branch/master"><img alt="Coverage" src="https://img.shields.io/codecov/c/github/delgan/loguru/master.svg"></a> <a href="https://app.codacy.com/gh/Delgan/loguru/dashboard"><img alt="Code quality"...

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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

Loguru provides a simplified, zero-boilerplate logging interface that replaces Python's standard logging with a single pre-configured logger supporting file rotation, colored output, structured logging, and thread-safe exception handling.

Low friction: pure Python wheel with only three lightweight runtime dependencies. Active maintenance with recent release and strong community engagement.

MIT license (permissive) allows unrestricted use, modification, and distribution in both open-source and commercial projects with minimal obligations.

Usage

pip install loguru

from loguru import logger

logger.info("Hello, world!")
logger.add("file_{time}.log", rotation="500 MB")

Verdict: Loguru is a mature, well-maintained logging replacement with zero security vulnerabilities, permissive licensing, and minimal dependencies. Its simplicity and feature-richness (rotation, compression, structured logging, exception catching) make it an excellent choice for both scripts and production applications across Python 3.5+.

Needs verification

Whether colorama, aiocontextvars, and win32-setctime have their own known vulnerabilities or maintenance concerns
Performance characteristics compared to standard library logging under high-volume scenarios
Specific GitHub stars count and exact days since last release

python logging librarysimple logger with rotationcolored console loggingstructured logging pythonexception catching decoratorfile logging with compressionthread-safe logging