On 1 June 2017 at 00:10, Guido van Rossum <guido@python.org> wrote:

On Wed, May 31, 2017 at 2:16 AM, Ivan Levkivskyi <levkivskyi@gmail.com> wrote:
On 31 May 2017 at 00:58, Guido van Rossum <guido@python.org> wrote:

Thank you for very detailed answers! I have practically nothing to add.
It seems to me that most of the Kevin's questions stem from unnecessary focus
on runtime type checking. Here are two ideas about how to fix this:

* Add the word "static" somewhere in the PEP title.

So the title could become "Protocols: Static structural subtyping (duck typing)" -- long, but not record-setting.

I am thinking about "Protocols: Structural subtyping (static duck typing)". The reason is that subtyping is already a mostly static concept (in contrast to subclassing),
while duck typing is typically associated with the runtime behaviour.

This might seem minor, but this version of the title sounds much more naturally to me.