proposed PEP: iterator splicing

[Carsten Haese]

On 14 Apr 2007 22:17:08 -0700, Paul Rubin wrote
> The boilerplate
> 
>     def some_gen():
>        ...
>        for x in some_other_gen():
>            yield x
>        ...
> 
> is so common (including the case where some_other_gen is the same as
> some_gen, i.e. it's a recursive call) that I find myself wanting
> a more direct way to express it:
> 
>     def some_gen():
>        ...
>        yield *some_other_gen()
> 
> comes to mind.  Less clutter, and avoids yet another temp variable
> polluting the namespace.
> 
> Thoughts?

Explicit is better than implicit. The explicit boilerplate code is more
readable and tells the reader exactly what's going on. Since the namespace is
the local namespace of your generator function, the namespace pollution is
minimal.

-Carsten