Logging instead of print

For bigger apps, the logging module records what happened with levels like INFO and ERROR, and can write to a file.

Key points

logging.basicConfig(level=logging.INFO)
log.info, log.warning, log.error
Never log passwords or tokens

import logging
logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)s %(message)s")
log = logging.getLogger("weather")
log.info("Fetching weather for %s", "Kuwait City")

Your turn

Replace the debug prints in your weather app with logging.

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Quiz · +10 XP

Logging instead of print

Key points

What should never be written to logs?