Default Value

[Lefavor, Matthew (GSFC-582.0)[MICROTEL LLC]]

> ============================================================
> The Apathetic Approach:
> ============================================================
> I could just assume that a programmer is responsible for the
> code he writes. If he passes mutables into a function as
> default arguments, and then mutates the mutable later, too
> bad, he'll understand the value of writing solid code after
> a few trips to exception Hell.

Congratulations, you just summarized exactly what Python does, and exactly the coding style that the Python documents recommend.