Python 3.7 logging: f-strings vs %

Question

(This question already has an answer here): question from:https://stackoverflow.com/questions/54367975/python-3-7-logging-f-strings-vs

Answer 1

The documentation says that the logging lib is optimized to use the %s formatting style. I can't remember where it is mentionned exactly, but I read it a few months ago.

Edit - Found! https://docs.python.org/3/howto/logging-cookbook.html#formatting-styles
Edit2 - (thanks to Robin Nemeth): https://docs.python.org/3/howto/logging.html#optimization