[Python-Dev] [PEP 558] thinking through locals() semantics (original) (raw)
Nick Coghlan ncoghlan at gmail.com
Wed May 29 01:22:55 EDT 2019
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On Wed., 29 May 2019, 2:29 pm Guido van Rossum, <guido at python.org> wrote:
So why is it “hellish” for JITs if locals() returns a proxy, while frame.flocals being a proxy is okay?
As I understand it, they already drop out of compiled mode if they detect that the code is tinkering with frame objects.
Having a single locals() call de-optimize an entire function would be far from ideal.
Cheers, Nick.
)
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