Reckoner wrote:
>  On Nov 4, 1:30 pm, Vinay Sajip <vinay_sa...@[...].uk> wrote:
>    
> > On Nov 4, 7:40 pm, Reckoner <recko...@[...].com> wrote:
> >
> >
> >
> >     
> >> I hope that made some sense.
> >>       
> > Not especially :-(
> >
> > Sorry I don't understand exactly what you mean, because I find your
> > terminology confusing. For example, "logger that is attached to foo2"
> > - loggers are not attached to functions. "It responds to the 'root'
> > logger" - what responds? What's meant by "respond"?
> >
> > Loggers correspond to specific code components in an application.
> > Normally these areas are modules and sometimes they're classes.
> >
> > You can certainly treat functions as areas but this will typically
> > become unwieldy in any sizeable application. It doesn't (in general)
> > make sense to have a specific logger for foo1 for use only when it's
> > called by foo2. These seem like anti-patterns to me.
> >
> > Handlers are attached to loggers to make events logged via those
> > loggers available to different audiences - via console, file, email
> > etc.
> >
> > If you want to log that foo1 is being called by foo2, you can do this.
> > For example, you could have a utility function which walks (a
> > sufficient part of) the call stack to see the function call hierarchy,
> > then log this as additional information (e.g. using the 'extra'
> > parameter to the logging call). You can attach Filters to loggers and
> > handlers which use this information to decide where and whether to
> > actually record the event.
> >
> > As well as the Python logging documentation, you may also find the
> > following link useful:
> >
> > http://plumberjack.blogspot.com/2009/09/python-logging-101.html
> >
> > Regards,
> >
> > Vinay Sajip
> >     
> 
>  I appreciate your patience, as I am new to this.
> 
>  Your comments have put me on the right track. I will look at the link
>  you specify.
> 
>  Thanks again.
>    

_foo2Logger = None

def foo2():
    global _foo2Logger
    _foo2Logger = whateverLogger
    foo1()


def foo1():
    foo1Logger = logging.getLogger(_foo2Logger.name + '.foo1') # this is 
how you can "attach" dynamically a logger to another
    foo1Logger.info('')



But for all the reasons expressed by Vinay, you don't want to do that.

Jean-Michel
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