JSON Logger (Python)

type

item

files

2

registry deps

none

npm deps

none

env vars

LOG_LEVEL

• ①Installs a JSON formatter on the root logger, so third-party logging comes out as JSON too
• ②Keys ending in key, secret, token, password, authorization or cookie are redacted before serialisation, recursively
• ③child(run_id=...) bakes fields into every line; LOG_LEVEL is read once at configure()

Call once at startup: log = log_json.configure(service="acme-api"), then log.info("job done", run_id=run_id); log.child(run_id=...) bakes fields into every line. One JSON object per line: ts, level, service, msg, your fields, then err when log.exception() attaches one. Any field whose key ends in key, secret, token, password, authorization or cookie (or equals auth) is replaced with [redacted] before serialisation, recursively — extend REDACT_SUFFIXES for app-specific names. LOG_LEVEL is read when configure() runs. Values that cannot be serialised fall back to str(); a logger must never crash the app.