Bug report

For example, for the curses module, pydoc shows only three functions (all implemented in Python) in 3.13, but shows dozens functions in 3.12.

This regression was introduced in #113942.

If the Python module does not have __all__ and is a wrapper around a C module, the imported builtin function can have different __module__ (unless the C module do not specify __module__ or lies about it). We should ignore __module__ for builtin function. Maybe for builtin classes too?

Linked PRs

• gh-139076: Fix regression in pydoc not showing extension functions #139077
• [3.14] gh-139076: Fix regression in pydoc not showing extension functions (GH-139077) #139160
• [3.13] gh-139076: Fix regression in pydoc not showing extension functions (GH-139077) #139161