tweaks

csst_proto/demo.py

@@ -9,6 +9,11 @@ def a_demo_function(*args):
     *args : any
         The argument list.
 
+    Returns
+    -------
+    int
+        The number of input arguments.
+
     Examples
     --------
     >>> a_demo_function(None)

csst_proto/top_level_interface.py

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