[Tutor] calling a superclass method after overriding it

[Serdar Tumgoren]

> I know this is a simplified example, but I'd still like to point out that
> using exceptions when there's a simple test is not reasonable.   You can
> just check for None with a simple if test.

An "if" test would be more readable, I agree.  But I was trying to
apply the "Easier to Ask Permission Forgiveness" style, discussed in
the Python Cookbook: ,

http://tinyurl.com/lfp35q

And in this recipe from the book:

http://code.activestate.com/recipes/52291/

The example Martelli uses is far more complicated than my simple use
case of checking for None, so perhaps I've engaged in a bit of
overkill? Or perhaps I'm not fully understanding the lesson. I'll
admit, the latter is very possible since I'm still on the front end of
the learning curve...