Can you shorten logging headers when using python logging `%(funcName)s`?

Question

Sometimes I configure the python logging formatter using the %(funcName)s. But I don't like this when the function names are really long.

Can you shorten logging headers when using python logging %(funcName)s? If yes, how?

Can you say... limit the total number of characters to like 10 characters?

Answer 1

The %(...)s items in the logging format string are % replacements, and you can limit the length of a string replacement by doing something like %(funcName).10s

e.g.

import logging

logging.basicConfig(
    format='%(funcName).10s %(message)s',
    level=logging.INFO,
)

logger = logging.getLogger()

def short():
    logger.info("I'm only little!")

def really_really_really_really_long():
    logger.info("I'm really long")

short()
really_really_really_really_long()

gives

andy@batman[17:54:01]:~$ p tmp_x.py 
short I'm only little!
really_rea I'm really long