recursive function: use a global or pass a parameter?

[Roy Smith]

In article <54ba3654$0$13008$c3e8da3$5496439d at news.astraweb.com>,
 Steven D'Aprano <steve+comp.lang.python at pearwood.info> wrote:

> Good reasons for using global variables are few and far between. Just about
> the only good reason for using global variables that I can think of is if
> you have one or more settings/preference that get set once at the start of
> the program and then apply to the entire program.

I will commonly put something like:

import logging
logger = logging.getLogger("logger-name-for-my-module")

in every source file in a big project.  Now I've got a global logger I 
can use anywhere in the module (even in static functions).  But, maybe 
that's just a subset of your "setting that gets set once at the start of 
the program" example.