[Python-ideas] Re: Fwd: Re: Experimenting with dict performance, and an immutable dict

Well, it seems ok now: https://github.com/python/cpython/compare/master...Marco-Sulla:master

I've done a quick speed test and speedup is quite high for a creation using keywods or a dict with "holes": about 30%:

python -m timeit -n 2000 --setup "from uuid import uuid4 ; o = {str(uuid4()).replace('-', '') : str(uuid4()).replace('-', '') for i in range(10000)}" "dict(**o)"

python -m timeit -n 10000 --setup "from uuid import uuid4 ; o = {str(uuid4()).replace('-', '') : str(uuid4()).replace('-', '') for i in range(10000)} ; it = iter(o) ; key0 = next(it) ; o.pop(key0)" "dict(o)"

Can I do a PR?