Evaluate structlog and loguru

[daryllimyt]

Evaluation

Resources used

• https://betterstack.com/community/guides/logging/structlog/
• https://betterstack.com/community/guides/logging/loguru/
• Both libraries' docs

Breakdown

Function	Loguru	Structlog
Attach structured context	Yes, call .bind or .contextualize to attach variables	Yes, call .bind
Add new logger	Call .add	Likely some additional config
Colored logs	Yes	Yes
Setup complexity	Low, literally just use one logger	Mid-High , requires creation of pipeline-like object with processors applied onto the logger
f-string syntax	Yes	No
JSON logs	Yes, use serialize	Yes, use processor
Structured exceptions/traces	No	Yes
Exception diagnostics	Yes, use diagnose flag	No
Async-Await syntax compatibility	?	Available

Verdict

Loguru appears simpler to get started with. Structlog apparently needs more config before it's actually usable.

They mostly offer the same features but loguru is more featureful.

-> going with Loguru