[Python-ideas] dict.merge(d1, d2, ...) (Counter proposal for PEP 584)
songofacandy at gmail.com
Tue Mar 5 06:02:17 EST 2019
On Tue, Mar 5, 2019 at 7:59 PM Steven D'Aprano <steve at pearwood.info> wrote:
> On Tue, Mar 05, 2019 at 06:04:40PM +0900, INADA Naoki wrote:
> > One obvious merit of d.merge(...) is it returns same type of d.
> > `type(d1)(d1, d2)` looks ugly.
> > But people just want dict instead of some subtype of dict.
> > This merit is not so important.
> Not to me! It *is* important to me.
I'm sorry, I missed "most".
> I want builtins to honour their subclasses. It is probably too late to
> change existing behaviour, but my proposal specifies that subclasses are
Then my proposal `d1.merge(d2)` is much better than alternative
dict(d1, d2) for you.
Inada Naoki <songofacandy at gmail.com>
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