Mickey Killianey added the comment:
Vinay: thanks for the response.
My use case is that I've inherited a legacy application with a problematic
third-party module (call it 'foo'). I want to sprinkle in some file-logging
for the 'foo' logger to trace what's going on, while making the minimal impact
on the module. Since 'foo' does some reflection on itself, I also want to
avoid introducing new symbols in the module, if possible.
You said:
> If you're after convenience, you could use the dictionary
> configuration API which allows you to set the levels
> declaratively.
If by "dictionary configuration API" you're suggesting
logging.config.dictConfig, then yes, it does meet my criteria, although the
minimal amount of code to configure one file handler looks pretty long-winded
for what seems like a fairly common request:
logging.config.dictConfig({
'version' : 1,
'handlers' : {
'handler_name' : {
'class' : 'logging.FileHandler',
'level' : logging.DEBUG,
'filename' : 'foo.log',
},
},
'loggers' : {
'foo' : {
'handlers' : [
'handler_name',
],
},
},
})
Or were you suggesting logging.basicConfig? The limitation of basicConfig
seems to be that it only works on an unconfigured root logger, not on a named
logger, and it doesn't work if anyone else has touched root.
I was hoping for something that's simple, easy-to-remember, easy-to-type, and
makes a minimal impact on the module I'm debugging. For example, how do any of
these sound...?
...if basicConfig had an optional 'name' argument, so that it could config
loggers other than root logger:
logging.basicConfig(name='foo', filename='foo.log', level=DEBUG)
...if 'basicConfig' was a method on Logger:
logging.getLogger('foo').basicConfig(filename='foo.log', level=DEBUG)
...if the handlers' setters supported the builder pattern and returned self
from setLevel:
logging.getLogger('foo').addHandler(FileHandler('foo.log').setLevel(DEBUG))
(Instead of commenting on this closed bug, should I enter this as a new issue
and set it as a feature request?)
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<http://bugs.python.org/issue876421>
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