On Thu, Dec 23, 2021 at 02:09:50PM -0800, Guido van Rossum wrote:
> Without decorator too (that was Lukasz’ idea). Why bother with the
> decorator (*if* we were to go there)?
So that
def func(params): pass
creates a function object, and
def func(params)
makes a Callable type object?
I'm going to *love* explaining the difference to beginners when they
accidently do this and try to call func.
Python is not Scratch and is not intended as a teaching language for
kids, but some proposals are actively hostile to beginners, and I think
this is one. Have we considered how this would effect something as
simple as the meaning of keywords?
- `class` creates classes, also known as types;
- `def` creates functions, and also types, but not types you can use
for anything except type-checking.
Given that annotations are optional everywhere else, what happens if you
leave out the annotations in the type definition?
def SomethingFunction(x)
Is that the same as Callable[[Any], Any] or Callable[[None], None]?
Or are we going to create a rule that annotations are mandatory in some
`def`s but optional in others?
--
Steve
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