gh-133644: remove deprecated PyImport_ImportModuleNoBlock (#133655)

Doc/c-api/import.rst

@@ -16,19 +16,6 @@ Importing Modules
    This is a wrapper around :c:func:`PyImport_Import()` which takes a
    :c:expr:`const char *` as an argument instead of a :c:expr:`PyObject *`.
 
-.. c:function:: PyObject* PyImport_ImportModuleNoBlock(const char *name)
-
-   This function is a deprecated alias of :c:func:`PyImport_ImportModule`.
-
-   .. versionchanged:: 3.3
-      This function used to fail immediately when the import lock was held
-      by another thread.  In Python 3.3 though, the locking scheme switched
-      to per-module locks for most purposes, so this function's special
-      behaviour isn't needed anymore.
-
-   .. deprecated-removed:: 3.13 3.15
-      Use :c:func:`PyImport_ImportModule` instead.
-
 
 .. c:function:: PyObject* PyImport_ImportModuleEx(const char *name, PyObject *globals, PyObject *locals, PyObject *fromlist)
 

Doc/data/refcounts.dat

@@ -1093,9 +1093,6 @@ PyImport_ImportModuleLevelObject:PyObject*:locals:0:???
 PyImport_ImportModuleLevelObject:PyObject*:fromlist:0:???
 PyImport_ImportModuleLevelObject:int:level::
 
-PyImport_ImportModuleNoBlock:PyObject*::+1:
-PyImport_ImportModuleNoBlock:const char*:name::
-
 PyImport_ReloadModule:PyObject*::+1:
 PyImport_ReloadModule:PyObject*:m:0:
 

Doc/data/stable_abi.dat

@@ -323,7 +323,6 @@ func,PyImport_ImportFrozenModuleObject,3.7,,
 func,PyImport_ImportModule,3.2,,
 func,PyImport_ImportModuleLevel,3.2,,
 func,PyImport_ImportModuleLevelObject,3.7,,
-func,PyImport_ImportModuleNoBlock,3.2,,
 func,PyImport_ReloadModule,3.2,,
 func,PyIndex_Check,3.8,,
 type,PyInterpreterState,3.2,,opaque

Doc/deprecations/c-api-pending-removal-in-3.15.rst

@@ -2,7 +2,7 @@ Pending removal in Python 3.15
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 * The bundled copy of ``libmpdecimal``.
-* The :c:func:`PyImport_ImportModuleNoBlock`:
+* The :c:func:`!PyImport_ImportModuleNoBlock`:
   Use :c:func:`PyImport_ImportModule` instead.
 * :c:func:`PyWeakref_GetObject` and :c:func:`PyWeakref_GET_OBJECT`:
   Use :c:func:`PyWeakref_GetRef` instead. The `pythoncapi-compat project

Doc/whatsnew/2.6.rst

@@ -3043,7 +3043,7 @@ Changes to Python's build process and to the C API include:
 
 * Importing modules simultaneously in two different threads no longer
   deadlocks; it will now raise an :exc:`ImportError`.  A new API
-  function, :c:func:`PyImport_ImportModuleNoBlock`, will look for a
+  function, :c:func:`!PyImport_ImportModuleNoBlock`, will look for a
   module in ``sys.modules`` first, then try to import it after
   acquiring an import lock.  If the import lock is held by another
   thread, an :exc:`ImportError` is raised.

Doc/whatsnew/3.0.rst

@@ -870,7 +870,7 @@ to the C API.
 * :c:func:`!PyNumber_Coerce`, :c:func:`!PyNumber_CoerceEx`,
   :c:func:`!PyMember_Get`, and :c:func:`!PyMember_Set` C APIs are removed.
 
-* New C API :c:func:`PyImport_ImportModuleNoBlock`, works like
+* New C API :c:func:`!PyImport_ImportModuleNoBlock`, works like
   :c:func:`PyImport_ImportModule` but won't block on the import lock
   (returning an error instead).
 

Doc/whatsnew/3.13.rst

@@ -2499,7 +2499,7 @@ Deprecated C APIs
   which return a :term:`borrowed reference`.
   (Soft deprecated as part of :pep:`667`.)
 
-* Deprecate the :c:func:`PyImport_ImportModuleNoBlock` function,
+* Deprecate the :c:func:`!PyImport_ImportModuleNoBlock` function,
   which is just an alias to :c:func:`PyImport_ImportModule` since Python 3.3.
   (Contributed by Victor Stinner in :gh:`105396`.)
 

Doc/whatsnew/3.15.rst

@@ -164,3 +164,5 @@ Deprecated C APIs
 Removed C APIs
 --------------
 
+* :c:func:`!PyImport_ImportModuleNoBlock`: deprecated alias
+  of :c:func:`PyImport_ImportModule`.

Doc/whatsnew/3.3.rst

@@ -829,7 +829,7 @@ Previous versions of CPython have always relied on a global import lock.
 This led to unexpected annoyances, such as deadlocks when importing a module
 would trigger code execution in a different thread as a side-effect.
 Clumsy workarounds were sometimes employed, such as the
-:c:func:`PyImport_ImportModuleNoBlock` C API function.
+:c:func:`!PyImport_ImportModuleNoBlock` C API function.
 
 In Python 3.3, importing a module takes a per-module lock.  This correctly
 serializes importation of a given module from multiple threads (preventing

Include/import.h

@@ -51,9 +51,6 @@ PyAPI_FUNC(PyObject *) PyImport_AddModuleRef(
 PyAPI_FUNC(PyObject *) PyImport_ImportModule(
     const char *name            /* UTF-8 encoded string */
     );
-Py_DEPRECATED(3.13) PyAPI_FUNC(PyObject *) PyImport_ImportModuleNoBlock(
-    const char *name            /* UTF-8 encoded string */
-    );
 PyAPI_FUNC(PyObject *) PyImport_ImportModuleLevel(
     const char *name,           /* UTF-8 encoded string */
     PyObject *globals,

Lib/test/test_capi/test_import.py

@@ -134,7 +134,7 @@ class ImportTests(unittest.TestCase):
         # CRASHES importmodule(NULL)
 
     def test_importmodulenoblock(self):
-        # Test deprecated PyImport_ImportModuleNoBlock()
+        # Test deprecated (stable ABI only) PyImport_ImportModuleNoBlock()
         importmodulenoblock = _testlimitedcapi.PyImport_ImportModuleNoBlock
         with check_warnings(('', DeprecationWarning)):
             self.check_import_func(importmodulenoblock)

Misc/NEWS.d/3.11.0a4.rst

@@ -1161,7 +1161,7 @@ no-op now.
 .. nonce: Lq2_gR
 .. section: C API
 
-Replaced deprecated usage of :c:func:`PyImport_ImportModuleNoBlock` with
+Replaced deprecated usage of :c:func:`!PyImport_ImportModuleNoBlock` with
 :c:func:`PyImport_ImportModule` in stdlib modules. Patch by Kumar Aditya.
 
 ..

Misc/NEWS.d/3.13.0a1.rst

@@ -6538,7 +6538,7 @@ to hide implementation details. Patch by Victor Stinner.
 .. nonce: FQJG5B
 .. section: C API
 
-Deprecate the :c:func:`PyImport_ImportModuleNoBlock` function which is just
+Deprecate the :c:func:`!PyImport_ImportModuleNoBlock` function which is just
 an alias to :c:func:`PyImport_ImportModule` since Python 3.3. Patch by
 Victor Stinner.
 

Misc/NEWS.d/next/C_API/2025-05-08-12-25-47.gh-issue-133644.Yb86Rm.rst

@@ -0,0 +1,2 @@
+Remove deprecated alias :c:func:`!PyImport_ImportModuleNoBlock` of
+:c:func:`PyImport_ImportModule`. Patch by Bénédikt Tran.

Misc/stable_abi.toml

@@ -888,6 +888,7 @@
     added = '3.2'
 [function.PyImport_ImportModuleNoBlock]
     added = '3.2'
+    abi_only = true
 [function.PyImport_ReloadModule]
     added = '3.2'
 [function.PyInterpreterState_Clear]

Modules/_testlimitedcapi/import.c

@@ -108,20 +108,19 @@ pyimport_importmodule(PyObject *Py_UNUSED(module), PyObject *args)
 }
 
 
-/* Test PyImport_ImportModuleNoBlock() */
+/* Test PyImport_ImportModuleNoBlock() (removed in 3.15) */
 static PyObject *
 pyimport_importmodulenoblock(PyObject *Py_UNUSED(module), PyObject *args)
 {
+    // Get the function from the stable ABI.
+    PyAPI_FUNC(PyObject *) PyImport_ImportModuleNoBlock(const char *name);
+
     const char *name;
     Py_ssize_t size;
     if (!PyArg_ParseTuple(args, "z#", &name, &size)) {
         return NULL;
     }
-
-    _Py_COMP_DIAG_PUSH
-    _Py_COMP_DIAG_IGNORE_DEPR_DECLS
     return PyImport_ImportModuleNoBlock(name);
-    _Py_COMP_DIAG_POP
 }
 
 

Python/import.c

@@ -3434,8 +3434,10 @@ PyImport_ImportModule(const char *name)
  * ImportError instead of blocking.
  *
  * Returns the module object with incremented ref count.
+ *
+ * Removed in 3.15, but kept for stable ABI compatibility.
  */
-PyObject *
+PyAPI_FUNC(PyObject *)
 PyImport_ImportModuleNoBlock(const char *name)
 {
     if (PyErr_WarnEx(PyExc_DeprecationWarning,