在Python的logging.conf中设置日志记录级别

Question

我想让我的项目变得更容易调试我的代码。我讨厌添加和删除打印或调试语句（为什么不把它们留在？）问题是输出变得混乱阅读。我试图能够设置不同文件和级别的日志记录，所以我可以通过logging.conf配置文件打开或关闭它。

这里是我的代码：

import logging.config 
logging.config.fileConfig('logging.conf') 
if __name__ == "__main__": 
    one = logging.getLogger("oneLogger") 
    two = logging.getLogger("twoLogger") 
    one.debug("debug on one") 
    one.info("info on one") 
    one.warn("warn on one") 
    one.error("error on one") 
    one.critical("critical on one") 
    two.debug("debug on two") 
    two.info("info on two") 
    two.warn("warn on two") 
    two.error("error on two") 
    two.critical("critical on two") 

这里是我的logging.conf文件：

[loggers] 
keys=root,oneLogger, twoLogger 

[handlers] 
keys=rootHandler, oneHandler, twoHandler 

[formatters] 
keys=rootFormatter,oneFormatter, twoFormatter 

[logger_root] 
level=DEBUG 
handlers=rootHandler 

[logger_oneLogger] 
level=DEBUG 
handlers=oneHandler 
qualname=main 
propagate=1 

[logger_twoLogger] 
level=CRITICAL 
handlers=twoHandler 
qualname=main 
propagate=1 

[handler_rootHandler] 
class=StreamHandler 
formatter=rootFormatter 
args=(sys.stdout,) 

[handler_oneHandler] 
class=StreamHandler 
formatter=oneFormatter 
args=(sys.stdout,) 

[handler_twoHandler] 
class=StreamHandler 
formatter=twoFormatter 
args=(sys.stdout,) 

[formatter_rootFormatter] 
format=Root: %(asctime)s - %(name)s - %(levelname)s - %(message)s 
datefmt= 

[formatter_oneFormatter] 
format=One: %(asctime)s - %(name)s - %(levelname)s - %(message)s 
datefmt= 

[formatter_twoFormatter] 
format=Two: %(asctime)s - %(name)s - %(levelname)s - %(message)s 
datefmt= 

我本来期望的输出：

One: 2016-12-22 16:36:32,414 - one - DEBUG - debug on one 
One: 2016-12-22 16:36:32,414 - one - INFO - info on one 
One: 2016-12-22 16:36:32,415 - one - WARNING - warn on one 
One: 2016-12-22 16:36:32,417 - one - ERROR - error on one 
One: 2016-12-22 16:36:32,417 - one - CRITICAL - critical on one 
Two: 2016-12-22 16:36:32,421 - two - CRITICAL - critical on two 

相反，我得到这个：

Root: 2016-12-22 16:36:32,414 - one - DEBUG - debug on one 
Root: 2016-12-22 16:36:32,414 - one - INFO - info on one 
Root: 2016-12-22 16:36:32,415 - one - WARNING - warn on one 
Root: 2016-12-22 16:36:32,417 - one - ERROR - error on one 
Root: 2016-12-22 16:36:32,417 - one - CRITICAL - critical on one 
Root: 2016-12-22 16:36:32,418 - two - DEBUG - debug on two 
Root: 2016-12-22 16:36:32,418 - two - INFO - info on two 
Root: 2016-12-22 16:36:32,420 - two - WARNING - warn on two 
Root: 2016-12-22 16:36:32,421 - two - ERROR - error on two 
Root: 2016-12-22 16:36:32,421 - two - CRITICAL - critical on two 

我在期待那个记录器将被限制为只有CRITICAL日志，并且记录器可以接受所有的日志。相反，我很惊讶地看到根记录器处理了所有的日志。

我在做什么/假设错误？

Answer 1

明白了。看来，“qualname”就是我一直在寻找，而不是记录仪本身的名称：

这里是我的代码：

import logging.config 
logging.config.fileConfig('logging.conf') 
if __name__ == "__main__": 
    one = logging.getLogger("one.oneLogger") 
    one.debug("debug on one") 
    one.info("info on one") 
    one.warn("warn on one") 
    one.error("error on one") 
    one.critical("critical on one") 
    two = logging.getLogger("two") 
    two.debug("debug on two") 
    two.info("info on two") 
    two.warn("warn on two") 
    two.error("error on two") 
    two.critical("critical on two") 
    root = logging.getLogger() 
    root.debug("debug on root") 
    root.info("info on root") 
    root.warn("warn on root") 
    root.error("error on root") 
    root.critical("critical on root") 

这里是我的logging.conf文件：

[loggers] 
keys:root,twoLogger,oneLogger 

[handlers] 
keys:rootHandler,oneHandler,twoHandler 

[formatters] 
keys:rootFormatter,oneFormatter,twoFormatter 

[logger_root] 
level:DEBUG 
handlers:rootHandler 

[logger_oneLogger] 
level:WARN 
handlers:oneHandler 
qualname:one 
propagate:0 

[logger_twoLogger] 
level:CRITICAL 
handlers:twoHandler 
qualname:two 
propagate:0 

[handler_rootHandler] 
class:StreamHandler 
formatter:rootFormatter 
args:(sys.stdout,) 

[handler_oneHandler] 
class:StreamHandler 
formatter:oneFormatter 
args:(sys.stdout,) 

[handler_twoHandler] 
class:StreamHandler 
formatter:twoFormatter 
args:(sys.stdout,) 

[formatter_rootFormatter] 
format:Root: %(asctime)s - %(name)s - %(levelname)s - %(message)s 
datefmt: 

[formatter_oneFormatter] 
format:One: %(asctime)s - %(name)s - %(levelname)s - %(message)s 
datefmt: 

[formatter_twoFormatter] 
format:Two: %(asctime)s - %(name)s - %(levelname)s - %(message)s 
datefmt: 

这里是我的输出：

One: 2016-12-24 12:46:14,244 - one.oneLogger - WARNING - warn on one 
One: 2016-12-24 12:46:14,246 - one.oneLogger - ERROR - error on one 
One: 2016-12-24 12:46:14,246 - one.oneLogger - CRITICAL - critical on one 
Two: 2016-12-24 12:46:14,247 - two.twoLogger - CRITICAL - critical on two 
Root: 2016-12-24 12:46:14,249 - root - DEBUG - debug on root 
Root: 2016-12-24 12:46:14,249 - root - INFO - info on root 
Root: 2016-12-24 12:46:14,250 - root - WARNING - warn on root 
Root: 2016-12-24 12:46:14,250 - root - ERROR - error on root 
Root: 2016-12-24 12:46:14,252 - root - CRITICAL - critical on root