On 2022-06-20 22:26, Chris Angelico wrote:
Okay, here's a compromise.
Go and write a full and detailed specification of the Python-visible
semantics of deferred evaluation objects, including how they would be
used to implement late-bound argument defaults.
Go and actually do some real work on your pet feature, instead of
using the vapourware to try to shut down the one I've been working on.
Go and actually do something useful instead of just arguing that "it
must be possible".
I'm not the person you're replying to, but just a reminder here: there
is one alternative proposal that already has a fully functioning
implementation, namely the current behavior. Your arguments against the
deferred-evaluation proposal seem to constantly be reiterating that
there is no concrete deferred-evaluation proposal. You are right. But
your arguments also seem to be insinuating that if there is no such
proposal, then opposition to the PEP is somehow misguided, and that is
incorrect. There doesn't need to be any concrete alternative proposal
other than "leave everything as it is and wait until we think of
something better".
It is perfectly valid to oppose your PEP even on the basis that maybe a
deferred-evaluation proposal has a remote possibility of being better in
the future --- because it is perfectly valid to oppose your PEP even if
such a proposal has NO possibility of being better in the future. There
is no urgency or need for the behavior described in your PEP. I am fine
with the current behavior of Python in this regard. It is not necessary
to provide any alternative proposal, concrete or handwavy, to argue that
the PEP is a bad idea. I believe the PEP is a bad idea because the
current behavior of Python is actually better than what it would be if
the PEP were adopted. I believe it is better to wait until we think of
a better idea than to implement this PEP, and, if we never think of a
better idea, then never change the existing argument-default behavior of
Python.
--
Brendan Barnwell
"Do not follow where the path may lead. Go, instead, where there is no
path, and leave a trail."
--author unknown
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