Update __init__.py

Fix #424

bindings/Sofa/package/__init__.py

@@ -391,7 +391,7 @@ def import_sofa_python_scene(path_to_scene : str):
     sys.modules["module.name"] = module_name
     spec_from_location.loader.exec_module(module_name)
 
-    if not hasattr(foo, "createScene"):
+    if not hasattr(module_name, "createScene"):
         raise Exception("Unable to find 'createScene' in module "+path_to_scene)
 
     return foo