Adding Lambda as a key in logs

[Padwicker]

I need to add lambda as a key in my structured logs, I've tried using the following syntax but it doesn't work because lambda is a reserved word in python

logger.structure_logs(append=True, lambda="whatever")

Is there another way I can achieve this using the powertools logger?

[deric4]

I haven't tried it specifically for this library, but you might be able to get away with implementing dictionary unpacking which might look something like this :

fields_to_append = {'lambda': 'whatever'}
logger.structure_logs(append=True, **fields_to_append)

or, theres always using a different field name lol 🙃

[heitorlessa]

Hey, thanks for opening a discussion ;)

Sure, try this and let us know if it works, as this is a problem for any reserved keyword for function kwarg:

logger.structure_logs(append=True, **{"lambda": "whatever"})

I'd typically ask what the use case is as together we might come up with a better name, but I'd leave at your discretion.

Thanks

[Padwicker]

Thanks for the suggestions :) I'll get back to you with results. I just need to use that key to get our logging to work nicely with datadog.

[heitorlessa]

Sure thing :) Both suggestions work as it's a common solution for not only using reserved keyword as keyword arguments but also to long function parameter calls when you use a dic - Just tested with Logger to triple check. from aws_lambda_powertools import Logger logger = Logger(service="discussion_367") # literal form logger.structure_logs(append=True, **{"lambda": "test"}) # from a dict keys_to_append = {"lambda": "test"} logger.structure_logs(append=True, **keys_to_append) logger.info("hello") ```json {"level": "INFO", "location": "<module>:6", "message": "hello", "timestamp": "2021-03-26 21:02:22,477", "service": "discussion_367", "sampling_rate": 0.0, "lambda": "test"} ```

…

On Fri, 26 Mar 2021 at 20:53, Padwicker ***@***.***> wrote: Thanks for the suggestions :) I'll get back to you with results. I just need to use that key to get our logging to work nicely with datadog. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#367 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAZPQBESME2TIUXK7EY2HJLTFTQ4ZANCNFSM4Z32DXPA> .

[Padwicker]

Thanks, btw love this library, it's so useful