diff --git a/jedi/inference/compiled/mixed.py b/jedi/inference/compiled/mixed.py
index 43e0ed6c..b323d70e 100644
--- a/jedi/inference/compiled/mixed.py
+++ b/jedi/inference/compiled/mixed.py
@@ -187,7 +187,7 @@ def _find_syntax_node_name(inference_state, python_object):
     try:
         python_object = _get_object_to_check(python_object)
         path = inspect.getsourcefile(python_object)
-    except TypeError:
+    except (OSError, TypeError):
         # The type might not be known (e.g. class_with_dict.__weakref__)
         return None
     path = None if path is None else Path(path)
diff --git a/test/test_api/test_interpreter.py b/test/test_api/test_interpreter.py
index 4154c072..e6232e05 100644
--- a/test/test_api/test_interpreter.py
+++ b/test/test_api/test_interpreter.py
@@ -711,3 +711,24 @@ def test_negate():
     assert x.name == 'int'
     value, = x._name.infer()
     assert value.get_safe_value() == -3
+
+
+def test_complete_not_findable_class_source():
+    class TestClass():
+        ta=1
+        ta1=2
+
+    # Simulate the environment where the class is defined in
+    # an interactive session and therefore inspect module
+    # cannot find its source code and raises OSError (Py 3.10+) or TypeError.
+    TestClass.__module__ = "__main__"
+    # There is a pytest __main__ module we have to remove temporarily.
+    module = sys.modules.pop("__main__")
+    try:
+        interpreter = jedi.Interpreter("TestClass.", [locals()])
+        completions = interpreter.complete(column=10, line=1)
+    finally:
+        sys.modules["__main__"] = module
+
+    assert "ta" in [c.name for c in completions]
+    assert "ta1" in [c.name for c in completions]