Feature or enhancement

Proposal:

Proposal: Refactor compileall module

This proposal aims to improve thecompileall module with:

• More informative docstrings for all public functions
• Better inline comments explaining complex logic
• Type hints for function signatures
• Minor PEP8 formatting fixes
• Additional unit tests for new helper functions

Thecompileall module is currently not very well documented, which makes it harder for both Python users and contributors to understand and maintain. Improving docstrings, comments, and typing will make the module more accessible and maintainable.

No logic changes are intended this is a pure refactoring and documentation improvement.

Feedback welcome — happy to iterate and split this into smaller PRs if needed!

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Linked PRs

• gh-144223: Refactor compileall: improve docstrings, add type hints, comments, and tests #144224