Change return types of py.None()
, py.NotImplemented()
and py.Ellipsis()
to typed singletons
#3578
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This PR changes
py.None()
to return&PyNone
py.NotImplemented()
to return&PyNotImplemented
py.Ellipsis()
to return&PyEllipsis
This was discussed in #3577 (comment) where it was suggested there was no needed to make this a standalone PR. I decided to break it out anyway as this is a change that may create some small breakages for users, so I wanted to make the diff for this more visible (and show how PyO3 code adjusted to it), as well as make a migration guide entry for it.