On 24/05/17 14:31, Ivan Levkivskyi wrote:
Hi all,
After collecting suggestions in the previous discussion on python-dev
https://mail.python.org/pipermail/python-dev/2017-March/thread.html#147629
and playing with implementation, here is an updated version of PEP 544.
--
Ivan
I really like this PEP in general. I think this brings the type system
for type-hints closer to Python semantics.
But there are a few points I disagree with.
I don't think Protocol types should be tied to ABCs. It just makes
things more complex with no obvious benefit.
I also think all references to 'isinstance' and 'issubclass' should be
removed. Type-hints should not have runtime semantics, beyond those that
they have as classes. In fact, there is no need for protocol types to be
classes at all.
Cheers,
Mark.
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