How to make an empty generator?

[Terry Reedy]

On 2/18/2010 5:25 PM, Stephen Hansen wrote:
> This has to be a stupid question, but :)
>
> I have some generators that do stuff, then start yielding results. On
> occasion, I don't want them to yield anything ever-- they're only really
> "generators" because I want to call them /as/ a generator as part of a
> generalized system.
>
> The only way I can figure out how to make an empty generator is:
>
>      def gen():
>          # do my one-time processing here
>
>          return
>          yield
>
> Is there a better way? The return/yield just makes me flinch slightly. I
> tried just raising StopIteration at the end, but of course that didn't work.

Did you try

def gen():
   <stuff>
   if 0: yield

?
tjr