Store logger.log() output into variable

Hi. I want to store the output of logger.log("Some logging message") into variable. The reason for that is that I want to send some logging messages into my Email from the program same as they shown in the terminal console for instance

>> log_msg = logging.log("Storing data...")
# Nothing should print into the terminal console
>> print(log_msg)
# Expected output
2021-02-20 23:11:48.955 | INFO     | TeleBot:store_data:69 - Storing data...

# And of course, I would like to send it to my mail
>> send_logging_message_to_mail(log_msg)

[obviousrebel]

@Delgan Thank you. I have some misunderstanding. logger.add(send_logging_message_to_mail, filter=should_send_mail) As i understand the first parameter is sink or logging Handler object. I probably need custom logging handler that will receive the logging message from loguru and send it to mail. Can you help me with that handler? I tried myself and I didn’t managed to make that.

The first parameter can also be a callable (function) so should work as is, just update to point to your function that takes message as a parameter.

[Delgan]

Thanks @obviousrebel for pointing that out. Indeed, it’s not possible to retrieve the output of a logging call. Actually, there is no such output because it depends entirely of the added handlers and their format configuration. Each handler has its own output.

You should instead add your send_logging_message_to_mail() as a sink and use maybe a filter combined with bind() to decide when to send the email.

def should_send_mail(record):
    return record["extra"].get("send_mail", False)

logger.add(send_logging_message_to_mail, filter=should_send_mail)

logger.info("Basic message")
logger.bind(send_mail=True).info("Storing data and sending mail...")