R. David Murray added the comment:
You need to install the (currently externally maintained) type hints files from
https://github.com/python/typeshed. I don't think a decision has been made
about if/when these files will be incorporated into the distribution.
--
nosy: +r.david.murray
New submission from John Michael Lafayette:
I love the new type hint feature in Jetbrains IDE (PEP 0484). Now when my user
defined methods return a value, I can press (Crtl+space) and see the type of
that value and all its methods. Also, when I pass the wrong type in, I get a
warning.