Logging to stdout and file in python

python-logging

'''
src: https://stackoverflow.com/a/46098711/2433866
'''
import sys
import logging
import logging.handlers

logging.basicConfig(
    level=logging.INFO,
    format="[%(asctime)s] %(levelname)s in %(module)s: %(message)s",
    handlers=[
        logging.handlers.RotatingFileHandler(
            'main.log', 
            maxBytes=(1048576*5), 
            backupCount=9
            ),
        logging.StreamHandler(sys.stdout)
    ]
)

''' test below '''
mainLogger = logging.getLogger('mainLogger')
newLogger = logging.getLogger('newLogger')

for i in range(100000):
    mainLogger.info(f"mainLogger {i}");
    newLogger.info(f"newLogger! {i}");