[Python-ideas] add a LogReader to the logging module

[Oleg Broytman]

Hi! Isn't it just basicConfig?

    import logging
    logging.basicConfig(
        filename='test.log',
        format='[%(asctime)s] %(name)s %(levelname)s: %(message)s',
        level=logging.DEBUG,
    )
    log = logging.getLogger("TEST")

On Wed, May 10, 2017 at 08:40:01AM -0700, terji78 at gmail.com wrote:
> I get a message back that I'm not subscribed to the mailing list, but see 
> my message in google groups. My sincerest apologies in advance, if this 
> appears several times for you. Anyways:
> 
> The logging module has an easy-to-setup logger:
> 
>     import logging
>     logger = logging.getLogger(__name__)
>  
> and you just log away. Easy.
> 
> However, it's quite a bit more difficult to set up log readers, requiring 
> IMO an unreasonably number of lines of code:
> 
>     import logging
> 
>     logger = logging.getLogger('mypackage')
>     logger.setLevel(logging.DEBUG)
>     handler = logging.StreamHandler()
>     formatter = logging.Formatter('%(
> levelname)s:%(name)s:%(message)s')
>     handler.setFormatter(formatter)
>     logger.addHandler(handler)
> 
> I propose adding a function that sets up a log reader with sensible 
> defaults, but allowing customization. So, I propose a 
> ``logging.getLogReader`` in the logging module to mirror 
> ``logging.getLogger``. So, to use this, in your main.py, you'd typically 
> just do:
> 
>     import logging
> 
>     log_reader = logging.getLogReader('mypackage.models')
> 
> 
> and you'd get all log output from mypackage.models with sensible defaults 
> set. Much easier. 
> 
> You could also set up it up in more detail, e.g.:
> 
>     log_reader = logging.getLogReader('mypackage.models',
>                                       level='debug',
>                                       format='%(levelname)s | %(filename)s| 
> line %(lineno)s | %(message)s'
>                                       )
> 
> For a specific proposal, see:
> 
> https://gist.github.com/topper-123/85e27ffe261850eed150eac53d61b82d
> 
> Because it's just a logger, log_reader can be further customized as 
> necessary.  
> 
> In summary, I think  that today it's unneccesarily complex to set up a log 
> reader and the proposed function serves a general enough need, that it - or 
> something similar - should be in the logging module. Thoughts?

Oleg.
-- 
     Oleg Broytman            http://phdru.name/            phd at phdru.name
           Programmers don't die, they just GOSUB without RETURN.