Why don't generators execute until first yield?

[Marco Mariani]

Duncan Booth wrote:

> Perhaps if you'd copied all of my code (including the decorator that was 
> the whole point of it)...

Sure, I missed the point. Python's > symbols become quoting levels and 
mess up messages.

Anyway, I would loathe to start execution of a generator before starting 
to iterate through it. Especially when generators are passed around.
The current behavior makes perfect sense.