[Python-ideas] except expression

[Ethan Furman]

I see two motivating factors for an except expression:

   - one line try/except handling for simple cases
   - easier default value handling when function/method does not support a default value

Given that, I don't think we need to support multiple exception types or chained exceptions.  If it's that complicated, 
use an actual try block -- it'll be much more readable.

--
~Ethan~