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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Implement PEP 793 – PyModExport","articleBody":"# Feature or enhancement\n\n### Proposal:\n\nSee [PEP 793](https://peps.python.org/pep-0793/). I'll copy the abstract for reference:\n\n\u003e In this PEP, we propose a new entry point for C extension modules, by which one can define a module using an array of `PyModuleDef_Slot` structures without an enclosing `PyModuleDef` structure. This allows extension authors to avoid using a statically allocated `PyObject`, lifting the most common obstacle to making one compiled library file usable with both regular and free-threaded builds of CPython.\n\u003e \n\u003e To make this viable, we also specify new module slot types to replace `PyModuleDef`’s fields, and to allow adding a token similar to the `Py_tp_token` used for type objects.\n\u003e\n\u003e We also add an API for defining modules from slots dynamically.\n\u003e\n\u003e The existing API (`PyInit_*`) is soft-deprecated. (That is: it will continue to work without warnings, and it’ll be fully documented and supported, but we plan to not add any new features to it.)\n\n---\n\n* [x] Initial implementation (#140556)\n* [ ] Docs:\n  * [x] Reference docs (#141197)\n    * [x] Soft-deprecate `PyInit_*` (#141197)\n    * [x] Better explanation of module state (#141197)\n    * [x] Give an example for tokens (#141197)\n  * [ ] What's New\n    * [ ] a notice for `DYNLOADFILE` users\n  * [ ] Porting guide HOWTO\n    * [ ] Document that the export hook runs without GIL in FT builds (see `#141780`) \n  * [x] Tutorial update (#142314)\n  * [ ] Mentions in `PyImport_AppendInittab` \u0026 friends\n  * [ ] Make sure references to new API are linked:\n    * [x] `PyMod_Exec`in `PyImport_CreateModuleFromInitfunc` docs is linked (#141197)\n    * [ ] `PyMODEXPORT_FUNC` in blurb for `#141672`\n    * [ ] blurb for `#141780`\n* [ ] `xxlimited.c` update (#142827)\n  * [ ] Remove/replace `_Py_OPAQUE_PYOBJECT` in `xxlimited.c` (by 3.15.0 beta)\n\nOptional stretch goals:\n\n* [ ] Remove the `PyInit` function from `Lib/test/test_cext/extension.c` (https://github.com/python/cpython/pull/141511)\n* [ ] Speed \u0026 size improvements\n  * [ ] `importdl`: load the DLL once\n  * [x] `bool` for the GIL flag (#141519)\n* [ ] No longer require `spec.name` in `PyModule_FromSlotsAndSpec`\n* [ ] No longer require static allocation for `Py_mod_methods`\n* [ ] Add a `PyModule_GetStateWithToken()` function\n\n### Has this already been discussed elsewhere?\n\nNo response given\n\n### Links to previous discussion of this feature:\n\n_No response_\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-140556\n* gh-141056\n* gh-141197\n* gh-141511\n* gh-141519\n* gh-142583\n* gh-142827\n\u003c!-- /gh-linked-prs --\u003e\n\nSee also:\n* gh-141672\n* gh-142314","author":{"url":"https://github.com/encukou","@type":"Person","name":"encukou"},"datePublished":"2025-10-24T14:40:10.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/140550/cpython/issues/140550"}