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

[terji78 at gmail.com]

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?
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