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Oh actually looks like I can use stdlib_module_names.h do get sys.stdlib_module_names in C. And I can of course do the path munging in C as well.

Should I disable this ifsys.flags.safe_path? Also this won't currently work forpython nested_folder/script.py wherenested_folder contains the shadowing module... I could base this aroundPy_GetPath()[0] instead.

Oh hmm,Py_GetPath is deprecated, so I guess I have to getsys.path[0] (and assume it hasn't changed). This means we have to call back into Python and risk the bad recursion again. See the code from before7f24b99 , curious if people have suggestions that are more bulletproof than module name checks.

(edit from later: I discoveredPySys_GetObject, so now I can safely do a bunch of stuff!)

FYI, I think we're at the tail end of my review and I don't expect to have much more feedback to offer. Thanks for working on this.

You'll still want to double-check with@pablogsal and anyone else with a vested interest.

Thank you so much for the detailed review!

Does anyone have any more comments? If not, I'd love a green check mark to unblock the merge. (And of course I'll be happy to address any post-merge follow-ups)

We need to be sure the other reviewers are on board, especially@pablogsal.

ping@erlend-aasland,@JelleZijlstra,@AlexWaygood

This has been quiet for a while and I'd love to get it in ahead of beta1, so I will probably go ahead and merge soon.

Please let me know if you have additional feedback and I'll follow up in additional PRs. Thanks to everyone who left reviews, in particular to ericsnowcurrently!

Thanks Erlend!

This is great, but I'm greedy now: what about the other form? This works for AttributeErrorimport x; x.y but not for thefrom x import y ImportError form.

$touch pathlib.py$python3.13 -c"import pathlib; pathlib.Path"Traceback (most recent call last):  File "<string>", line 1, in <module>    import pathlib; pathlib.Path                    ^^^^^^^^^^^^AttributeError: module 'pathlib' has no attribute 'Path' (consider renaming '/Users/henryschreiner/git/presentations/python313/pathlib.py' since it has the same name as the standard library module named 'pathlib' and the import system gives it precedence)$python3.13 -c"from pathlib import Path"Traceback (most recent call last):  File "<string>", line 1, in <module>    from pathlib import PathImportError: cannot import name 'Path' from 'pathlib' (/Users/henryschreiner/git/presentations/python313/pathlib.py)