Do any other languages already have this feature?
Can you show some actual real-life code that would benefit from this, as
opposed to pretend code like:
foo(bar=, qux=)
I think that if I had seen this syntax as a beginner, I would have had
absolutely no idea how to interpret it. I probably would have decided
that Python was an unreadably cryptic language and gone on to learn
something else.
Of course, with 20+ years of experience reading and writing code, I
know better now. I would interpret it as setting bar and qux to some
kind of Undefined value.
I am very sympathetic to the rationale:
"it is quite common to find code that forwards keyword parameters having
to re-state keyword arguments names"
and I've discussed similar/related issues myself, e.g. here:
https://mail.python.org/pipermail/python-list/2018-February/881615.html
But I am not convinced that adding magic syntax to implicitly guess the
value wanted as argument if it happens to match the parameter name is a
good design feature.
Is being explicit about the value that you are passing to a parameter
really such a burden that we need special syntax to avoid stating what
value we are using as the argument?
I don't think it is. And I would far prefer to read explicit code like
this:
# Slightly modified from actual code.
self.do_something(
meta=meta,
dunder=dunder,
private=private,
invert=invert,
ignorecase=ignorecase,
)
over the implicit version:
# Looks like code I haven't finished writing :-(
self.do_something(meta=, dunder=, private=, invert=, ignorecase=)
Out of the millions of possible values we might pass, I don't think that
the func(spam=spam) case is so special that we want to give it special
syntax.
--
Steven
_______________________________________________
Python-ideas mailing list -- python-ideas@python.org
To unsubscribe send an email to python-ideas-le...@python.org
https://mail.python.org/mailman3/lists/python-ideas.python.org/
Message archived at
https://mail.python.org/archives/list/python-ideas@python.org/message/VCCQ6BOVEQZ4ZWLKVDTVUCMAWD2VQL7B/
Code of Conduct: http://python.org/psf/codeofconduct/
