refactored to demo

csst_proto/some_other_modules.py → csst_proto/demo.py

@@ -13,7 +13,7 @@ def a_demo_function(*args):
     --------
     >>> a_demo_function(None)
     """
-    return None
+    return len(args)
 
 
 class ADemoClass:

csst_proto/top_level_interface.py

 from .flip_image import flip_image, read_test_image
-from .some_other_modules import a_demo_function, ADemoClass
+from .demo import a_demo_function, ADemoClass
 
 
 __all__ = ["flip_image", "read_test_image", "a_demo_function", "ADemoClass"]