Hi,

Python 3.13 and 3.14 added public functions to replace private functions. For example, a public function PyBytes_Join() was added to replace the private function _PyBytes_Join().

I propose to deprecate the private functions which have a public replacement, and remove them in Python 3.16.

Victor

Linked PRs

• gh-128863: Deprecate private C API functions #128864
• gh-128863: Deprecate _PyLong_Sign() function #129176
• gh-128863: deprecate _PyLong_New() function #129212
• gh-128863: deprecate _PyLong_FromDigits() function #127939
• gh-128863: Deprecate the private _PyUnicodeWriter API #129245