[Twisted-Python] Re: [Twisted-commits] r14614 - Describe log.debug, and 'printed' and 'debug' log dict items.
James Y Knight
foom at fuhm.net
Tue Oct 4 16:31:58 EDT 2005
On Oct 4, 2005, at 1:00 PM, Scott Lamb wrote:
> On Oct 4, 2005, at 12:20 AM, Nicola Larosa wrote:
>> Also, a few words to the effect of *why* it should be deprecated
>> would be
>> useful. We use it quite a lot, and I'd appreciate a few comments.
> Me, too, me too.
> In my day job, I develop a lot of Java code. We have the luxury of
> granular logging. I can switch, on a per-class basis, the output
> level to trace, debug, warn, error, or fatal. That's handy.
> In Twisted, I see log.msg(), log.debug(), and log.err(). Why is one
> of these levels going away? Is it just not normal to use logging
> for debugging? What do you do instead?
The "log levels", such as they are, are (and have been for ages)
implemented as keyword args on msg:
log.msg("error message", isError=1)
log.msg("debug message", debug=1).
The log.debug function just added the debug=1 argument for you.
The log.err func is poorly named, because you might be tempted to use
it to emit error-level info, when really it is for emitting Exception/
All in all, the log level functionality in twisted.python.log is
pretty silly, but substantially unchanged.
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