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have logger use caller's function name and line number

Peter Otten __peter__ at web.de
Sat Dec 29 15:45:44 EST 2018 
Malcolm Greene wrote:

> I have a class method that adds additional context to many of the
> class's log messages. Rather than calling, for example,  logger.info(
> 'message ...' ) I would like to call my_object.log( 'message ...' ) so
> that this additional context is managed in a single place. I'm actually
> doing that and its working great except that ... as expected ... all my
> log records have the my_object.log method's name and line numbers vs the
> callers' names and line numbers.
> Is there a technique I can use to have my custom log method inject the
> caller's name and line numbers in the log output?

https://mail.python.org/pipermail/python-list/2010-March/570941.html

No idea if this works with current Python, or if there is a more elegant way 
by now.
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