Python - Logging configuration

logging.yaml

---
version: 1
disable_existing_loggers: False
formatters:
    simple:
        format: "%(asctime)s - %(name)s - %(levelname)s - %(message)s"

handlers:
    console:
        class: logging.StreamHandler
        level: DEBUG
        formatter: simple
        stream: ext://sys.stdout

    info_file_handler:
        class: logging.handlers.RotatingFileHandler
        level: INFO
        formatter: simple
        filename: /var/log/your-app/info.log
        maxBytes: 52428800 # 50MB
        backupCount: 10
        encoding: utf8

    error_file_handler:
        class: logging.handlers.RotatingFileHandler
        level: ERROR
        formatter: simple
        filename: /var/log/your-app/error.log
        maxBytes: 52428800 # 50MB
        backupCount: 10
        encoding: utf8


loggers:
    interpolation:
        level: DEBUG
        handlers: [console, info_file_handler, error_file_handler]
        propagate: no

root:
    level: DEBUG
    handlers: [console, info_file_handler, error_file_handler]
...

sample.py

import logging
import logging.config
import os
import yaml

def setup_logging(
    default_path='logging.yaml', default_level=logging.INFO, env_key='LOG_CFG'
):
    """
    Setup logging configuration
    """
    path = dir_path + "/" + default_path
    value = os.getenv(env_key, None)
    if value:
        path = value
    if os.path.exists(path):
        with open(path, 'rt') as f:
            config = yaml.safe_load(f.read())
        logging.config.dictConfig(config)
    else:
        logging.basicConfig(level=default_level)


setup_logging()
logger = logging.getLogger('your-logger-name')