[Python-ideas] copyable generators
kay at fiber-space.de
Sun Apr 5 08:20:17 CEST 2009
Dear Python idea-lists,
I've noticed that subgenerators, coroutines and such stuff are heavily
discussed and are on topic here right now. What I'd like to ask is about
the mood of re-considering the deferred PEP 323 about copyable iterators
and related ideas.
I've done some work a while ago about copyable and pickable generators
in pure Python that works in some limitations but basically relies on a
fierce and almost impenetrable ( although documented ) bytecode hack. It
is bundled in a package called generator_tools. The design is mostly
"test-driven" which means that I wouldn't dare in my life to try a more
formal specification of the used heuristics and special case treatments.
I know that this packages has users and there were also quite a few
contributors who provided bug reports and fixes. So it isn't an academic
exercise. I would love to see this package being abandoned in the future
and replaced by a proper, more complete and faster CPython
implementation. I know I'm not really in a position of calling for
volunteers in particular because I'm not a core developer and don't want
to hack the CPython C code base. But maybe this would be a cool idea for
a summer-of-code project or something alike. I know that Stackless
Python has a working implemenation so it shall be at least feasible.
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