Python Logging

Overview

Choose the logging system based on project boundaries. Core principle: use stdlib logging for reusable libraries and ecosystem integration; use loguru only when an app or CLI owns the whole logging surface.

Use When

• Choosing between stdlib logging and loguru.
• Configuring log levels, handlers, formatters, or structured context.
• Adding logging to libraries, apps, CLIs, or services.
• Deciding how logging should interact with ops tooling.

Quick Reference