Logging across multiple modules

multiple_apps.py

#app.py
import logging 
from logging.handlers import TimedRotatingFileHandler

from flask import Flask
import new_module1
import new_module2

def create_app():
    app = Flask(__name__)
    logging.info('Started')
    return app
  
from os import path 
def create_logger(parent_dir='/var/log'):
    log_directory = os.path.join(parent_dir, 'messages')
    if not os.path.exists(log_directory):
            os.makedirs(log_directory)
    error_directory = os.path.join(parent_dir, 'errors')
    if not os.path.exists(error_directory):
        os.makedirs(error_directory)

    log_file_path = path.join(log_directory, 'client.log')
    error_log_file_path = path.join(error_directory, 'error.log')

    logger = logging.getLogger(__name__)
    formatter = logging.Formatter('%(asctime)s %(name)-12s %(levelname)-8s %(message)s')
    # log into stdout as well
    handler = logging.StreamHandler()
    handler.setFormatter(formatter)
    handler.setLevel(logging.DEBUG)
    # add multiple file handlers
    handler_info = TimedRotatingFileHandler(log_file_path, when="midnight", interval=1)
    handler_error = TimedRotatingFileHandler(error_log_file_path, when="midnight", interval=1)

    handler_info.setLevel(logging.INFO)
    handler_error.setLevel(logging.ERROR)
    handler_info.setFormatter(formatter)
    handler_error.setFormatter(formatter)

    logger.addHandler(handler)
    logger.addHandler(handler_info)
    logger.addHandler(handler_error)
    logger.setLevel(logging.INFO)
    return logger


if __name__ == '__main__':

    logger = create_logger()

    new_module.Module1()

    create_app()
    logger.info('Finished')

---
# new_module1.py
import logging

from new_module2 import Module2

class Module1:
    def __init__(self):
        logger = logging.getLogger(__name__)
        logger.info('[Module1] Doing something')
        logger.info('[Module1] Doing something')
        logger.info('[Module1] Doing something')
        self.module2 = Module2()
---
# new_module2.py
import logging

class Module2:
    def __init__(self):
        logger = logging.getLogger(__name__)
        logger.info('[Module2] Doing something')
        logger.info('[Module2] Doing something')
        logger.info('[Module2] Doing something')