On 16.04.20 22:28, Alex Hall wrote:
On Thu, Apr 16, 2020 at 10:13 PM Kyle Stanley <aeros...@gmail.com
<mailto:aeros...@gmail.com>> wrote:
Dominik Vilsmeier wrote:
> I'm not sure if this is doable from the compiler perspective,
but what
> about allowing tuples after `**` unpacking:
>
> requests.post(url, **(data, params))
>
> # similar to
> requests.post(url, data=data, params=params)
+1. I can see the practical utility of the feature, but was
strongly against the
other syntax proposals so far. IMO, the above alternative does a
great job of
using an existing feature, and I think it would be rather easy to
explain how
it works.
If we go in that direction, I'd prefer curly braces instead so that
it's more reminiscient of a dict instead of a tuple, although
technically it will look like a set literal.
Do you intend this "shortcut" syntax to also work in other contexts?
Because indeed if it looks like a set literal it would be confusing if
it emerges as a dict.
Some other possible syntaxes for a dict (which would have to be
unpacked in a function call) with string keys equal to the variable
name, i.e. {"foo": foo, "bar": bar}:
{*, foo, bar}
This looks like someone forgot an iterable after the `*`.
{**, foo, bar}
This resembles **kwargs but using it to unpack keyword arguments it
looks weird: `func(**{**, foo, bar})`.
{:, foo, bar}
{{ foo, bar }}
This is already valid syntax and attempts to store a set inside another set.
{* foo, bar *}
The `*foo` part is already valid syntax and the `bar *` looks like
someone forgot the second operand for the binary multiply.
{: foo, bar :}
{: foo, bar}
Personally in these cases I usually write dict(foo=foo, bar=bar)
instead of a dict literal because I don't like the quotes, but even
then I'm sad that I have to write the word 'dict'. So I would prefer
that we covered raw dicts rather than function calls, or both.
If at all, I'd prefer something like {:foo, :bar}. But anyway this takes
the proposal in a different direction.
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