python - "canonical"使用 Python 断言日志记录的方法

Question

在以下代码中，assert 在单元测试之外使用:

import logging

if __name__ == "__main__":
    logging.basicConfig(format="%(asctime)s - %(name)s - %(levelname)s - %(message)s", level=logging.INFO)
    logger = logging.getLogger(__name__)
    logger.info("info level")
    assert 1 == 0

打印如下:

2016-02-16 14:56:58,445 - __main__ - INFO - info level
Traceback (most recent call last):
   File "logtest.py", line 7, in <module>
    assert 1 == 0
AssertionError

对于 assert 引发的 AssertionError 使用带时间戳的日志记录格式的“规范”方法是什么(可能无需重写每个 assert代码)？

有许多类似的问题被问到，主要是处理单元测试上下文中的断言 ...谢谢

Answer 1

当您处理记录异常时，您的代码可能会在 try except 中出错，然后记录异常，例如:

try:
    assert 1 == 0 
except AssertionError as err:
    logger.exception("My assert failed :( ")
    raise err

然后它会记录:

2016-02-16 15:29:43,009 - __main__ - INFO - info level
2016-02-16 15:29:43,009 - __main__ - ERROR - My assert failed :( 
Traceback (most recent call last):
  File "/home/james/PycharmProjects/scratchyard/test_time.py", line 8, in <module>
    assert 1 == 0
AssertionError