> > import operator
> > reduce (operator.add, [y[1] for y in x])
>
>
> Aha! That's what I was looking for. Thanks...
>
Actually he said
reduce(operator.add, [y[1] for y in x], 0)
^^^^
reduce without the third argument will raise an exception if x is empty,
so it is best to get in the habit of including one.
-jack