On Sat, May 25, 2019, 07:38 Guido van Rossum <gu...@python.org> wrote:
> This looks great. > > I only have two nits with the text. > > First, why is the snapshot called a "dynamic snapshot"? What exactly is > dynamic about it? > It's dynamic in that it can spontaneously change when certain other events happen. For example, imagine this code runs at function scope: # take a snapshot a = locals() # it's a snapshot, so it doesn't include the new variable assert "a" not in a # take another snapshot b = locals() # now our first "snapshot" has changed assert "a" in a Overall I'm happy with the PEP, but I'm still a bit uneasy about whether we've gotten the details of this "dynamicity" exactly right, esp. since the PEP promotes them from implementation detail to language features. There are a lot of complicated tradeoffs so I'm working on a longer response that tries to lay out all the options and hopefully convince myself (and everyone else). -n
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