… write logs?

A developer’s got to write logs. When things break down, when errors pop up and when something is off, we refer to logs to comprehend what’s happening.

But for there to be logs, one needs to write logging in one’s app. Here’s how to do just that.

Getting a logger

To write logs, start by getting a logger instance. This can be achieved in one line of code.

import logging

logger = logging.getLogger(__name__)

The value of __name__ here is a dot separate path upto the current file. In a file named hello.py inside the module views inside the app application, it’s value is application.views.hello.

Omniport has been configured to automatically configure loggers and handlers via Discovery. Each discovered app has a dedicated logger, configured to work with two handlers: console (only active during development and debugging) and one named after the app (only active in production).

The latter of the two writes logs to file, rotated every midnight keeping the last 32 days (nearly a month, except 32 = 2⁵ which is a cool number).

Back to the point, all of it happens in the background, like magic, so there’s very little to do on your part.

Writing logs

Writing logs is easy as well.

logger.critical('This is a critical message!!')
logger.error('This is an error message!')

logger.warning('This is a warning message')
logger.info('This is an info message')

logger.debug('This is a debug message that no handler will catch')

That’s practically all there is to it.