Loguru

Loguru is a Python logging library designed to make logging easier and more robust than the standard library. It provides a simple, unified logger and a flexible concept of sinks to route log messages to files, streams, or other destinations without configuring loggers, handlers, or formatters manually.

At its core, loguru uses a single global logger object named logger. You can add one or more sinks using logger.add(...), each with its own formatting, level, rotation, retention, and compression policies. It supports rotating files by size or time, automatic retention, and optional compression. Logs can be enriched with context via bind(), and you can adjust how messages are captured and displayed with opt() for depth and exception formatting.

Loguru provides enhanced error reporting: logger.exception() prints a full traceback, and the library can automatically capture and display local variables and stack frames. It includes features such as colorized output, readable formatting, backtraces, and optional lazy evaluation of expensive message construction.

Compared with the built-in logging module, loguru emphasizes minimal boilerplate and a straightforward usage style, offering a powerful alternative for developers who want quick setup and readable logs. It is suitable for scripts, tooling, and applications that benefit from simple configuration and flexible log routing. It can be installed via pip and used alongside or as an alternative to standard logging in Python projects.

Loguru is an open-source project released under the MIT License and hosted on repositories such as GitHub. It is maintained by volunteers and contributors and has a variety of extensions and integrations, reflecting its broad usage in the Python ecosystem.