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.