[英]python - Which is the better way to enable/disable logging?
Which is better way to enable/disable logging? 哪种方法可以更好地启用/禁用日志记录?
1) Changing log levels, 1)更改日志级别,
logging.disable(logging.CRITICAL)
2) 2)
log = None
And logging messages this way, 并以这种方式记录消息,
if log:
log.info("log message")
So that we can avoid unnecessary string constructions in case of logging disabled... 这样我们可以在禁用日志记录的情况下避免不必要的字符串构造...
1 is best, ideally via a configuration file or command line argument (--quiet) 1是最好的,理想情况下通过配置文件或命令行参数(--quiet)
2 will just clutter up your code 2只会使你的代码混乱
If you want to avoid expensive string construction (this is probably worthwhile about 0.001% of the time in my experience), use: 如果你想避免昂贵的字符串构造(根据我的经验,这可能值0.001%的时间),使用:
if logger.isEnabledFor(logging.DEBUG):
logger.debug("Message with %s, %s", expensive_func1(),
expensive_func2())
http://docs.python.org/library/logging.html#optimization http://docs.python.org/library/logging.html#optimization
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