[Python-Dev] PEP 288: Generator Attributes

Tim Peters tim.one@comcast.net
Sat, 23 Nov 2002 23:48:12 -0500

[Jack Jansen]
> I don't like it, there's "Magic! Magic!" written all over it.
> Generators have always given me that feeling (you start reading them as
> a function, then 20 lines down you meet a "yield" and suddenly realize
> you have to start reading at the top again, keeping in mind that this
> is a persistent stack frame),

Except you don't need to do such a thing -- "yield" is much the same as
"print" this way.  Both have the same effect on the stack frame:  none.  So
if you don't find print to be confusing wrt local state, you shouldn't find
yield confusing wrt local state either.

> ...
> Generators have to me always felt more "class-instance-like" than
> "function-like",

I *exoect* you'll feel more the opposite the more you use them.  Heck,
they're so much like functions that Guido reused "def" for them <wink>.