gh-158402: Clear error if PyImport_GetModule raises in lazy import

Lib/test/test_lazy_import/__init__.py

@@ -894,6 +894,32 @@ def hello():
             self.assertEqual(result.returncode, 1)
             self.assertIn("Error", result.stderr)
 
+    def test_raising_spec_initializing(self):
+        """Test a raising spec._initializing"""
+        code = textwrap.dedent("""
+            import sys
+            import types
+
+            class Spec:
+                @property
+                def _initializing(self):
+                    raise RuntimeError("boom")
+
+            module = types.ModuleType("cached_spec")
+            module.__spec__ = Spec()
+            module.attr = 1
+            sys.modules["cached_spec"] = module
+            lazy from cached_spec import attr  # this ignores the error
+            try:
+                attr  # this runs into the error again
+            except RuntimeError as e:
+                print('error:', e)
+            else:
+                raise AssertionError("exception not raised")
+        """)
+        proc = assert_python_ok("-c", code)
+        self.assertIn(b"error: boom", proc.out)
+
 
 @support.requires_subprocess()
 class GlobalsAndDictTests(LazyImportTestCase):

Misc/NEWS.d/next/Core_and_Builtins/2026-09-29-14-09-10.gh-issue-158402.wfew_Y.rst

@@ -0,0 +1,2 @@
+During a lazy import, if getting an existing module fails with an exception,
+ignore the exception. (Later reification will likely trigger it again.)

Python/ceval.c

@@ -3358,6 +3358,11 @@ _PyEval_LazyImportFrom(PyThreadState *tstate, _PyInterpreterFrame *frame, PyObje
         }
         Py_DECREF(mod);
     }
+    else if (PyErr_Occurred()) {
+        // Getting the module failed. Ignore that for now; future
+        // reification will likely fail again.
+        PyErr_Clear();
+    }
 
     return _PyLazyImport_New(frame, d->lz_builtins, v, name);
 }