import logging

# 创建logger实例
logger = logging.getLogger('example')
logger.setLevel(logging.INFO)

# 创建格式化器
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')

#file_handler = logging.FileHandler('app.log')

# 创建控制台处理器
console_handler = logging.StreamHandler()
console_handler.setLevel(logging.DEBUG)
console_handler.setFormatter(formatter)

# 添加处理器到logger
logger.addHandler(console_handler)

# 输出日志消息
logger.debug('Debug message')
logger.info('Info message')
logger.warning('Warning message')
logger.error('Error message')
logger.critical('Critical message')