Update app.py

app.py

@@ -1,7 +1,10 @@
+# URL: https://huggingface.co/spaces/gradio/fake_diffusion
+# imports
 import gradio as gr
 import numpy as np
 import time
 
+# define core fn, which returns a generator {steps} times before returning the image
 def fake_diffusion(steps):
     for _ in range(steps):
         time.sleep(1)
@@ -11,9 +14,13 @@ def fake_diffusion(steps):
     image = "https://i.picsum.photos/id/867/600/600.jpg?hmac=qE7QFJwLmlE_WKI7zMH6SgH5iY5fx8ec6ZJQBwKRT44" 
     yield image
 
-
+# define Interface
 demo = gr.Interface(fake_diffusion, 
                     inputs=gr.Slider(1, 10, 3), 
                     outputs="image")
+
+# define queue - required for generators
 demo.queue()
+
+# launch
 demo.launch()