pyrepl autocomplete from x import <tab> to only display public members

Feature or enhancement

Proposal:

When using autocomplete in the REPL, from x import <tab> will show all non-underscore prefixed members. This is a dir-like behavior that is useful to inspect and understand what can be imported.

However, this mechanism isn't filtering on __all__ of the module and can yield a long list of non-useful candidates to autocomplete. Two examples shown below, pathlib and collections.abc.

The feature request is that when a user enters from x import <tab> only the candidates defined in __all__ are listed.

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

No response

Linked PRs

• gh-156146

从 from x import <tab> 的 pyrepl 自动补全入口开始，检查现有的类 dir 候选项过滤逻辑。检查自动补全测试（如果有），并使用 issue 中的 pathlib 和 collections.abc 示例来验证只有由 __all__ 暴露的名称才会被列出；链接的 PR gh-156146 表明相关工作已经在进行中。