added spec in test.test_pyclbr.py

added spec for test when calling directly

Author: MaximGit1

Lib/test/test_pyclbr.py

@@ -260,4 +260,12 @@ def test_module_has_no_spec(self):
 
 
 if __name__ == "__main__":
+    import importlib.util
+
+    # Adding the __spec__ attribute to the __main__ module
+    if getattr(sys.modules["__main__"], "__spec__", None) is None:
+        sys.modules["__main__"].__spec__ = importlib.machinery.ModuleSpec(
+            name="__main__", loader=None, origin="builtin"
+        )
+
     unittest_main()