[Python-Dev] Repeatability of looping over dicts (original) (raw)

Guido van Rossum guido at python.org
Sat Jan 5 18:00:38 CET 2008

On Jan 5, 2008 6:58 AM, <skip at pobox.com> wrote:

Guido> What code would break if we loosened this restriction? I don't know how much, but I do know I've relied on this behavior before. (In fact, I've asked about it before.) I guess the counter question to yours would be, "What would be gained by loosening this restriction"? If the answer is, "not much", then I don't see why this is even an idle thought.

It sounds like loosening the restriction would allow Jython to use an implementation that is more efficient when used concurrently.

That may not be sufficient reason; Jython apps that need a more efficient concurrent dict could import the ConcurrentHashMap class directly, and CPython apps are out of luck anyway.

-- --Guido van Rossum (home page: http://www.python.org/~guido/)

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