在日志系统中，应该为不同的日志级别定义不同的异常标准，以便更好地组织和管理日志信息。下面是一些用于不同日志级别的通用异常标准：

1. TRACE级别日志异常标准：

import logging

logging.basicConfig(level=logging.TRACE)

try:
    do_something()
except Exception as e:
    logging.error("An error occurred: %s", e)

2. DEBUG级别日志异常标准：

import logging

logging.basicConfig(level=logging.DEBUG)

try:
    do_something()
except Exception as e:
    logging.warning("Unexpected exception: %s", e)

3. INFO级别日志异常标准：

import logging

logging.basicConfig(level=logging.INFO)

try:
    do_something()
except Exception as e:
    logging.info("Caught exception: %s", e)

4. WARNING级别日志异常标准：

import logging

logging.basicConfig(level=logging.WARNING)

try:
    do_something()
except Exception as e:
    logging.warning("An exception occurred: %s", e)

5. ERROR级别日志异常标准：

import logging

logging.basicConfig(level=logging.ERROR)

try:
    do_something()
except Exception as e:
    logging.exception("Exception occurred: %s", e)

6. CRITICAL级别日志异常标准：

import logging

logging.basicConfig(level=logging.CRITICAL)

try:
    do_something()
except Exception as e:
    logging.critical("Critical error occurred: %s", e)