logger.py

Logging setup

import os
import sys
import logging
from logging.handlers import RotatingFileHandler

CONFIG = {
    'path': 'logs',
    'max_bytes': 1024,
    'backup_count': 10
}

log_path = os.path.join(CONFIG['path'], f'{__file__}.log')

os.makedirs(os.path.dirname(log_path), exist_ok=True)

logger = logging.getLogger('my_logger')
file_formatter = logging.Formatter('%(asctime)s - %(threadName)s - %(name)s - %(levelname)s - %(message)s')
console_formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
file_handler = RotatingFileHandler(log_path,
                                   maxBytes=CONFIG['max_bytes'],
                                   backupCount=CONFIG['backup_count']
                                   ) #total 2.5 gb
file_handler.setFormatter(file_formatter)
console_handler = logging.StreamHandler()
console_handler.setFormatter(console_formatter)

logger.addHandler(file_handler)
logger.addHandler(console_handler)
logger.setLevel(logging.DEBUG)

logger.critical('START MAIN WINDOW')

# catch exceptions
from traceback import format_tb

sys.excepthook = lambda exctype, value, tb: logger.critical(
    f'EXCEPTION:\nType:{exctype}\nValue:{value}\nTraceback:{format_tb(tb)}\n')