Unusual trick for better Python logs

You are probably used to logging variables in Python using string interpolation:

# Option 1
logger.info("Request succeeded for url: %s", url)
 
# Option 2, even better with f-strings
logger.info(f"Request succeeded for url: {url}")

There is a better option. Python 3.8 introduced self documenting strings.

logger.info(f"Request succeeded for {url=}")

The syntax is {variable=} within an f-string. Even though it has been available for a few years, it is uncommon to see it in production code. I believe it is yet to become popular.

That’s it.