[Python-Dev] PEP 484

[Ryan Gonzalez]

Type hints like in PEP 484 work on all Python 3 versions, and something 
similar to your proposal is already supported on Python 2 [1].

[1]: https://mypy.readthedocs.io/en/latest/python2.html


On July 4, 2018 11:08:27 PM Shawn Chen <shawnchen1996 at outlook.com> wrote:

> Hello,
>
> Here, I am proposing a change on python type annotation.
>
> Python was born to be a simple and elegant language. However recent change 
> has again introduce new incompatibility to python.
>
> The PEP 484 is proposing a type hint which can annotate the type of each 
> parameters. How ever code written in this format can not be run for 
> python3.5 and below.
>
> It is an exciting new feature to be able to know the data type from the 
> code, But I am afraid this is not worth such a incompatibility.
>
> Here I want to propose a new way of annotation in python as follows
>
> def reportAge(name, age):
> ''' this a a greeting function and some other comment...
> !str, int -> str
> '''
>     return name+' is ' + age
>
>
> we can put the annotation in the comment block and use a symbol '!' or 
> other symbol suitable to lead a annotation line.
> the annotation should be positionally corresponding to the parameters.
>
> Shawn
>
> Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
>
>
>
>
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