Loguru: The Best Logging Library for Python in 2026 — Tired of configuring Python’s built-in logging module? Loguru is the zero-config, beautiful, and powerful logging library that most modern Python developers use in 2026.
Simple, colorful, with automatic file rotation, JSON output, and excellent integration with FastAPI, Typer, and Rich.
1. Setup with uv
uv add loguru
uv add --dev ruff
2. Basic Usage (Extremely Simple)
from loguru import logger
logger.debug("This is a debug message")
logger.info("App started successfully")
logger.success("Task completed!")
logger.warning("Low disk space")
logger.error("Something went wrong")
logger.critical("Critical failure!")
3. Advanced Configuration (Still Simple)
from loguru import logger
import sys
logger.remove() # Remove default handler
logger.add(
sys.stdout,
format="{time:HH:mm:ss} | {level} | {message}",
level="DEBUG",
colorize=True
)
logger.add(
"logs/app_{time:YYYY-MM-DD}.log",
rotation="10 MB",
retention="30 days",
level="INFO",
enqueue=True
)
logger.add("logs/errors.log", level="ERROR", rotation="5 MB")
4. Integration with FastAPI & Typer
Loguru works seamlessly with middleware and decorators.
Conclusion
Loguru is the clear winner for logging in 2026. Replace 50 lines of logging config with just 5 lines of beautiful, production-ready logging.