Feature or enhancement

Python 3.13 alpha 1 removed the private _PyBytes_Join(sep, iterable) function which calls sep.join(iterable).

mypyc uses it. Since we already have PyUnicode_Join(sep, iterable), I propose to add a new PyBytes_Join() function.

In practice, it's just about renaming _PyBytes_Join() to PyBytes_Join().

Linked PRs

• gh-121645: Add PyBytes_Join() function #121646
• gh-121645: Fix typo in PyBytes_Join() doc #123783