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* gh-141780: Make PyModule_FromSlotsAndSpec enable GIL if needed (GH-141785)Petr Viktorin2025-11-241-0/+17
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* gh-140550: Use a bool for the Py_mod_gil value (GH-141519)Petr Viktorin2025-11-141-7/+8
| | | | | | | | This needs a single bit, but was stored as a void* in the module struct. This didn't matter due to packing, but now that there's another bool in the struct, we can save a bit of memory by making md_gil a bool. Variables that changed type are renamed, to detect conflicts.
* gh-140550: Initial implementation of PEP 793 – PyModExport (GH-140556)Petr Viktorin2025-11-051-76/+283
| | | | Co-authored-by: Victor Stinner <vstinner@python.org> Co-authored-by: Kumar Aditya <kumaraditya@python.org>
* gh-137956: Guard against non-free-threaded extensions in free-threaded ↵Petr Viktorin2025-09-151-0/+53
| | | | builds (GH-137957)
* gh-137210: Add a struct, slot & function for checking an extension's ABI ↵Petr Viktorin2025-09-051-0/+6
| | | | | (GH-137212) Co-authored-by: Steve Dower <steve.dower@microsoft.com>
* gh-130821: Add type information to error messages for invalid return type ↵Semyon Moroz2025-08-141-2/+3
| | | | (GH-130835)
* gh-135607: remove null checking of weakref list in dealloc of extension ↵Xuanteng Huang2025-06-301-2/+2
| | | | | | modules and objects (#135614) Co-authored-by: Kumar Aditya <kumaraditya@python.org> Co-authored-by: Victor Stinner <vstinner@python.org>
* gh-108512: Add and use new replacements for PySys_GetObject() (GH-111035)Serhiy Storchaka2025-05-281-2/+1
| | | | | Add functions PySys_GetAttr(), PySys_GetAttrString(), PySys_GetOptionalAttr() and PySys_GetOptionalAttrString().
* gh-132775: Add _PyModule_GetFilenameObject() and _PyModule_GetFilenameUTF8() ↵Eric Snow2025-04-281-9/+59
| | | | | | | (gh-132979) They are derived from the existing `PyModule_GetFilenameObject(). They are used by a later change related to pickle and handling __main__.
* gh-130907: Treat all module-level annotations as conditional (#131550)Jelle Zijlstra2025-04-281-1/+21
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* gh-131238: Remove pycore_object_deferred.h from pycore_object.h (#131549)Victor Stinner2025-03-211-1/+0
| | | Remove also pycore_function.h from pycore_typeobject.h.
* gh-131238: Remove more includes from pycore_interp.h (#131480)Victor Stinner2025-03-191-0/+2
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* gh-130932: Fix incorrect exception handling in _PyModule_IsPossiblyShadowing ↵Shantanu2025-03-071-1/+3
| | | | | | | | | | | | | | (#130934) I chose to not raise an exception here because I think it would be confusing for module attribute access to start raising something other than AttributeError if e.g. the cwd goes away Without the change in moduleobject.c ``` ./python.exe -m unittest test.test_import.ImportTests.test_script_shadowing_stdlib_cwd_failure ... Assertion failed: (PyErr_Occurred()), function _PyObject_SetAttributeErrorContext, file object.c, line 1253. ```
* gh-130163: Fix crashes related to PySys_GetObject() (GH-130503)Serhiy Storchaka2025-02-251-1/+7
| | | | | | | | The use of PySys_GetObject() and _PySys_GetAttr(), which return a borrowed reference, has been replaced by using one of the following functions, which return a strong reference and distinguish a missing attribute from an error: _PySys_GetOptionalAttr(), _PySys_GetOptionalAttrString(), _PySys_GetRequiredAttr(), and _PySys_GetRequiredAttrString().
* gh-129354: Fix grammar in PyErr_FormatUnraisable() (#129475)Victor Stinner2025-01-311-2/+4
| | | Replace "on verb+ing" with "while verb+ing".
* GH-127010: Don't lazily track and untrack dicts (GH-127027)Mark Shannon2024-11-201-2/+0
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* Revert "GH-126491: GC: Mark objects reachable from roots before doing cycle ↵Hugo van Kemenade2024-11-191-0/+2
| | | | collection (GH-126502)" (#126983)
* GH-126491: GC: Mark objects reachable from roots before doing cycle ↵Mark Shannon2024-11-181-2/+0
| | | | | | | | | | | | | | | | collection (GH-126502) * Mark almost all reachable objects before doing collection phase * Add stats for objects marked * Visit new frames before each increment * Remove lazy dict tracking * Update docs * Clearer calculation of work to do.
* gh-123930: Better error for "from imports" when script shadows module (#123929)Shantanu2024-10-241-12/+16
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* gh-124218: Use per-thread reference counting for globals and builtins (#125713)Sam Gross2024-10-211-1/+2
| | | | Use per-thread refcounting for the reference from function objects to the globals and builtins dictionaries.
* gh-111178: Fix function signatures in moduleobject.c (#124900)Victor Stinner2024-10-021-19/+44
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* gh-116322: Fix typo in the #ifdef check (#122268)Serhiy Storchaka2024-07-251-1/+1
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* gh-119180: PEP 649: Add __annotate__ attributes (#119209)Jelle Zijlstra2024-05-221-8/+95
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* gh-116322: Rename PyModule_ExperimentalSetGIL to PyUnstable_Module_SetGIL ↵Petr Viktorin2024-05-061-1/+1
| | | | (GH-118645)
* gh-118527: Use deferred reference counting for C functions on modules (#118529)Sam Gross2024-05-031-0/+1
| | | | | This addresses a scaling bottleneck in the free-threaded build when calling functions like `math.floor()` concurrently from multiple threads.
* gh-116322: Add Py_mod_gil module slot (#116882)Brett Simmers2024-05-031-0/+35
| | | | | | | | | | | | | | This PR adds the ability to enable the GIL if it was disabled at interpreter startup, and modifies the multi-phase module initialization path to enable the GIL when loading a module, unless that module's spec includes a slot indicating it can run safely without the GIL. PEP 703 called the constant for the slot `Py_mod_gil_not_used`; I went with `Py_MOD_GIL_NOT_USED` for consistency with gh-104148. A warning will be issued up to once per interpreter for the first GIL-using module that is loaded. If `-v` is given, a shorter message will be printed to stderr every time a GIL-using module is loaded (including the first one that issues a warning).
* gh-95754: Better error when script shadows a standard library or third party ↵Shantanu2024-04-231-53/+191
| | | | module (#113769)
* gh-117376: Partial implementation of deferred reference counting (#117696)Sam Gross2024-04-121-18/+19
| | | | | This marks objects as using deferred refrence counting using the `ob_gc_bits` field in the free-threaded build and collects those objects during GC.
* gh-116437: Use new C API PyDict_Pop() to simplify the code (GH-116438)Serhiy Storchaka2024-03-071-3/+7
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* gh-95754: Better AttributeError on partially initialised module (#112577)Shantanu2023-12-211-2/+22
| | | Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
* gh-112660: Do not clear arbitrary errors on import (GH-112661)Serhiy Storchaka2023-12-071-32/+25
| | | | | Previously arbitrary errors could be cleared during formatting error messages for ImportError or AttributeError for modules. Now all unexpected errors are reported.
* gh-111789: Use PyDict_GetItemRef() in Objects/ (GH-111827)Serhiy Storchaka2023-11-141-16/+13
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* gh-108082: Use PyErr_FormatUnraisable() (GH-111580)Serhiy Storchaka2023-11-021-6/+5
| | | | | | Replace most of calls of _PyErr_WriteUnraisableMsg() and some calls of PyErr_WriteUnraisable(NULL) with PyErr_FormatUnraisable(). Co-authored-by: Victor Stinner <vstinner@python.org>
* gh-108308: Use PyDict_GetItemRef() in moduleobject.c (#108381)Victor Stinner2023-08-231-28/+40
| | | | | | | | Replace PyDict_GetItemWithError() with PyDict_GetItemRef() which returns a strong reference. Cleanup also the function: move variable definition to their first assignation, rename variable names to use name longer than 1 character.
* gh-106869: Use new PyMemberDef constant names (#106871)Victor Stinner2023-07-251-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Remove '#include "structmember.h"'. * If needed, add <stddef.h> to get offsetof() function. * Update Parser/asdl_c.py to regenerate Python/Python-ast.c. * Replace: * T_SHORT => Py_T_SHORT * T_INT => Py_T_INT * T_LONG => Py_T_LONG * T_FLOAT => Py_T_FLOAT * T_DOUBLE => Py_T_DOUBLE * T_STRING => Py_T_STRING * T_OBJECT => _Py_T_OBJECT * T_CHAR => Py_T_CHAR * T_BYTE => Py_T_BYTE * T_UBYTE => Py_T_UBYTE * T_USHORT => Py_T_USHORT * T_UINT => Py_T_UINT * T_ULONG => Py_T_ULONG * T_STRING_INPLACE => Py_T_STRING_INPLACE * T_BOOL => Py_T_BOOL * T_OBJECT_EX => Py_T_OBJECT_EX * T_LONGLONG => Py_T_LONGLONG * T_ULONGLONG => Py_T_ULONGLONG * T_PYSSIZET => Py_T_PYSSIZET * T_NONE => _Py_T_NONE * READONLY => Py_READONLY * PY_AUDIT_READ => Py_AUDIT_READ * READ_RESTRICTED => Py_AUDIT_READ * PY_WRITE_RESTRICTED => _Py_WRITE_RESTRICTED * RESTRICTED => (READ_RESTRICTED | _Py_WRITE_RESTRICTED)
* gh-106719: Fix __annotations__ getter and setter in the type and module ↵Serhiy Storchaka2023-07-181-27/+21
| | | | | types (GH-106720) No longer suppress arbitrary errors. Simplify the code.
* gh-106521: Remove _PyObject_LookupAttr() function (GH-106642)Serhiy Storchaka2023-07-121-1/+1
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* gh-106320: Remove private _PyErr C API functions (#106356)Victor Stinner2023-07-031-2/+3
| | | | Remove private _PyErr C API functions: move them to the internal C API (pycore_pyerrors.h).
* gh-106320: Create pycore_modsupport.h header file (#106355)Victor Stinner2023-07-031-1/+2
| | | | | | | | | | Remove the following functions from the C API, move them to the internal C API: add a new pycore_modsupport.h internal header file: * PyModule_CreateInitialized() * _PyArg_NoKwnames() * _Py_VaBuildStack() No longer export these functions.
* gh-105927: finalize_modules_clear_weaklist() uses _PyWeakref_GET_REF() (#105971)Victor Stinner2023-06-211-1/+1
| | | | | finalize_modules_clear_weaklist() now holds a strong reference to the module longer than before: replace PyWeakref_GET_OBJECT() with _PyWeakref_GET_REF().
* gh-99113: Add a check for Py_MOD_PER_INTERPRETER_GIL_SUPPORTED (gh-104206)Eric Snow2023-05-061-1/+7
| | | Py_MOD_PER_INTERPRETER_GIL_SUPPORTED is a new supported value for Py_mod_multiple_interpreters, added in gh-104205.
* gh-99113: Add Py_MOD_PER_INTERPRETER_GIL_SUPPORTED (gh-104205)Eric Snow2023-05-051-1/+2
| | | Here we are doing no more than adding the value for Py_mod_multiple_interpreters and using it for stdlib modules. We will start checking for it in gh-104206 (once PyInterpreterState.ceval.own_gil is added in gh-104204).
* gh-104108: Add the Py_mod_multiple_interpreters Module Def Slot (gh-104148)Eric Snow2023-05-051-0/+30
| | | I'll be adding a value to indicate support for per-interpreter GIL in gh-99114.
* gh-104066: Improve performance of hasattr for module objects (#104063)Itamar Ostricher2023-05-041-29/+62
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* gh-101758: Clean Up Uses of Import State (gh-101919)Eric Snow2023-02-151-22/+3
| | | | | | | | | | | | | | | This change is almost entirely moving code around and hiding import state behind internal API. We introduce no changes to behavior, nor to non-internal API. (Since there was already going to be a lot of churn, I took this as an opportunity to re-organize import.c into topically-grouped sections of code.) The motivation is to simplify a number of upcoming changes. Specific changes: * move existing import-related code to import.c, wherever possible * add internal API for interacting with import state (both global and per-interpreter) * use only API outside of import.c (to limit churn there when changing the location, etc.) * consolidate the import-related state of PyInterpreterState into a single struct field (this changes layout slightly) * add macros for import state in import.c (to simplify changing the location) * group code in import.c into sections *remove _PyState_AddModule() https://github.com/python/cpython/issues/101758
* gh-99947: Ensure unreported errors are chained for SystemError during import ↵Sebastian Berg2022-12-231-4/+5
| | | | (GH-99946)
* gh-81057: Move More Globals in Core Code to _PyRuntimeState (gh-99516)Eric Snow2022-11-161-0/+2
| | | https://github.com/python/cpython/issues/81057
* gh-81057: Move the Extension Modules Cache to _PyRuntimeState (gh-99355)Eric Snow2022-11-111-3/+2
| | | | | We also move the closely related max_module_number and add comments documenting the group of struct members. https://github.com/python/cpython/issues/81057
* gh-99300: Use Py_NewRef() in Objects/ directory (#99354)Victor Stinner2022-11-101-6/+3
| | | | Replace Py_INCREF() and Py_XINCREF() with Py_NewRef() and Py_XNewRef() in C files of the Objects/ directory.
* gh-98627: Use a Switch in PyModule_FromDefAndSpec2() (gh-98734)Eric Snow2022-10-271-14/+18
| | | This helps simplify some changes in follow-up PRs. It also matches what we're doing in PyModule_ExecDef().
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