python - Django : Making exc_info optional in logging formatter

Question

我在 Django 中使用以下格式化程序来记录 django.request 模块中的警告和错误:

'format': '%(levelname)s: %(message)s\n %(exc_info)s'  

当没有发生异常时，这会打印None。当格式化程序没有异常时，是否可以跳过exc_info？

这是日志记录调用:

logger.error('', exc_info=True)

Answer 1

您不需要在日志记录格式配置中显式包含 %(exc_info)s:记录异常时，将自动添加回溯和相关内容。

引用logging module的文档:

There are two keyword arguments in kwargs which are inspected: exc_info which, if it does not evaluate as false, causes exception information to be added to the logging message. If an exception tuple (in the format returned by sys.exc_info()) is provided, it is used; otherwise, sys.exc_info() is called to get the exception information.

_{(强调我的。)}

另外，请关注LogRecord attributes部分:

exc_info      |      You shouldn’t need to format this yourself.