I talked about this before but I have slightly different suggestions
list[type] becomes [type]
tuple[type1, type2, type3] becomes (type1, type2, type3)
dict[type1, type2] becomes {type1: type2}
set[type] becomes {type}
Callable[[type1], type2] becomes (type1) -> type2
class MyTypedDict(TypedDict):
name: str
age: NotRequired[int]
becomes {name: str, age: NotRequired[int]}
Unfortunately, the steering committee rejected the callable syntax last year
even though I think the proposal was elegant and a lot of efforts went into it.
Maybe they will reconsider it in the future with some modifications? I don’t
know.
Abdulla
Sent from my iPhone
> On 1 Jul 2022, at 7:17 AM, Paul Bryan <[email protected]> wrote:
>
>
>>
>> On Tue, 2022-05-31 at 21:08 +0000, [email protected] wrote:
>>
>> On the theme of the addition of pip operators to indicate union, I was
>> wondering what people think of using the following shortcuts for type hints.
>
>> * type[] be a short-hand for List[type]
> I'm at -½ on this idea. Using list[type] isn't really problematic for me
> today.
>
>> * [type1, type2, type3] be a shorthand for Tuple[type1, type2, type3]
> I think this would problematic because today it already validly expresses a
> list containing the elements: type1, type2 and type3. And all it saves is 5
> characters: `tuple`.
>
>> * similar ideas for dictionaries and callables with (perhaps with
>> javascript-like arrow notations?)
>
> I'm +1 for the idea of a more intuitive callable type hint syntax.
>
>> I just think something like this would be easier to read. For example, a lot
>> of functions that return tuples generally are immediately unpacked when it's
>> used, so I think this is a more clear and concise way of stating that this
>> is that it returns three elements: an element of type1, an element of type2
>> and an element of type3. In other words, the fact that it's a tuple does not
>> matter much.
>
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