floatref

[Christian Heimes]

> I know, I just wondered if there is a *standard* solution.

Yeah, you have to reset your brain and switch to Python mode. *scnr*

Seriously, your inquiry sounds like you are trying to code C in Python.
I'm using Python for more than seven years and I've never felt the need
for a mutable float ref or something similar. Well, except for the first
year when my brain was still in C pointer mode. :)