[issue35810] Object Initialization does not incref Heap-allocated Types

[STINNER Victor]

STINNER Victor <vstinner at redhat.com> added the comment:

> * Should I write something up in python-dev/Discourse?

Please open a thread on python-dev. The purpose is not really to ask if it's worth it, but more to communicate properly on backward incompatible changes.

> * Do I need to update the PY_VERSION_HEX?

No. The release manager is responsible for that.

> * Do I need to write an entry in the Porting guide?

Yes. You should add a new "Changes in the C API" section to:
https://docs.python.org/dev/whatsnew/3.8.html#porting-to-python-3-8

This is why you can show an example of dealloc using #ifdef with PY_VERSION_HEX.

Example in 3.7 doc:
https://docs.python.org/dev/whatsnew/3.7.html#changes-in-the-c-api

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