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Sun Apr 19 23:38:40 CEST 2015 · https://mail.python.org/pipermail/python-dev/2015-April/139208.html

On 04/19/2015 01:26 PM, Glenn Linderman wrote:
> Is argument clinic a special case of type annotations?  (Quoted and 
> worded to be provocative, intentionally but not maliciously.)
>
> OK, I know that argument clinic applies to C code and I know that type 
> annotations apply to Python code. And I know that C code is a lot more 
> restrictive /a priori/ which clinic has to accommodate, and type 
> annotations are a way of adding (unenforced) restrictions on Python 
> code.  Still, from a 50,000' view, there seems to be an overlap in 
> functionality... and both are aimed at Py 3.5... I find that 
> interesting... I guess describing parameter types is the latest Python 
> trend :)

Argument Clinic and Python 3 type annotations are related concepts. 
Argument Clinic's syntax is designed in such a way that we actually use 
ast.parse() to parse it, and that includes using the type annotation 
syntax.  That's about all they have in common.

This discussion is off-topic and of limited interest; if you have 
further questions along these lines please email me privately.

//arry/
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[Python-Dev] Surely "nullable" is a reasonable name?