On 11/12/2019 12:04 am, Barry Warsaw wrote:
The Python Steering Council discussed PEP 611 at today’s meeting. Here is our
feedback so far:
* The Steering Council reserves the right to be the BDFL-Delegate for this PEP
* The PEP should clearly delineate two aspects:
- A language generic part (i.e. applies to all implementations of Python)
which exposes implementation limits in a way that Python code can read at
runtime. Think sys.getrecursionlimit(), sys.maxsize, and sys.implementation
- An implementation-specific part where the PEP would propose specific
limits for the CPython implementation. Other implementations of the Python
language would be free to adjust such limits up or down as they deem
appropriate.
* We encourage the PEP authors and proponents to gather actual performance data
that can be used to help us evaluate whether this PEP is a good idea or not.
I think that judging this on numbers from a handful of optimizations
would be a mistake.
There are an infinite number of potential optimizations, so it is
impossible to put numbers on as yet undiscovered optimization.
Conversely it is impossible to perfectly predict what limits might
restrict possible future applications.
Having said that, I agree that it would be useful to come up with
example optimizations and applications that benefit or suffer from the
limits.
By all means, continue to discuss and refine the PEP. When the PEP author is
ready for a pronouncement, you can email the Steering Council.
I welcome more discussion.
Ultimately this is a subjective judgement, so the more opinions we have,
the better.
Cheers,
-Barry
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