[Python-ideas] PEP 484 (Type Hints) -- first draft round

Eugene Toder eltoder at gmail.com
Thu Jan 22 05:39:15 CET 2015

On Wed, Jan 21, 2015 at 8:25 PM, Greg Ewing <greg.ewing at canterbury.ac.nz>

> On 01/22/2015 01:50 PM, Guido van Rossum wrote:
>> I've seen plenty of code that takes instances a certain class
>> as argument and calls methods of that type but never constructs a new
>> instance
>> nor does any of the other things for which you need the class name,
> If the only thing the name is needed for is static checking,
> I don't see what's so bad about not finding out until you
> actually run the static check. Adding those imports earlier
> doesn't make the code work any better or show up any more
> runtime bugs.

Also, if static type checking succeeds, it will be integrated into many
IDEs/editors, so you will see type checker errors even before you get to
run the tests.

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