[Python-Dev] PEP 563: Postponed Evaluation of Annotations (original) (raw)

Brett Cannon brett at python.org
Mon Nov 13 16:59:22 EST 2017

On Sun, Nov 12, 2017, 10:22 Koos Zevenhoven, <k7hoven at gmail.com> wrote:

On Nov 12, 2017 19:10, "Guido van Rossum" <guido at python.org> wrote:

On Sun, Nov 12, 2017 at 4:14 AM, Koos Zevenhoven <k7hoven at gmail.com> wrote:

So actually my question is: What should happen when the annotation is already a string literal?

The PEP answers that clearly (under Implementation): > If an annotation was already a string, this string is preserved > verbatim. Oh sorry, I was looking for a spec, so I somehow assumed I can ignore the gory implementation details just like I routinely ignore things like headers and footers of emails. There's two thing I don't understand here: * What does it mean to preserve the string verbatim? No matter how I read it, I can't tell if it's with quotes or without. Maybe I'm missing some context.

I believe the string passes through unchanged (i.e. no quotes). Think of the PEP as simply turning all non-string annotations into string ones.

-brett

-- Koos (mobile)

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