Python log to both file and stderr

01_README.md

Python log to both file and stderr

import sys
import logging
from logging.handlers import RotatingFileHandler

stderr_handler = logging.StreamHandler(sys.stderr)
rotate_handler = RotatingFileHandler("logs/rotate.log", maxBytes=5000000, backupCount=10)

logging.basicConfig(
    format="%(asctime)s - %(levelname)s - %(name)s.%(funcName)s:%(lineno)d - %(message)s",
    datefmt="%Y-%m-%dT%H:%M:%S",
    level=logging.INFO,
    handlers=[rotate_handler, stderr_handler],
)