Update app.py

app.py

@@ -45,7 +45,7 @@ if keys is not None:
 
 if topic is not None:
   c1, c2, c3 = st.columns([3, 1, 1])
-  subtopics = paraList[topic].keys()
+  subtopics = list(paraList[topic].keys())
   st.write(subtopics)
   val = np.random.randint(0,len(subtopics))
   choice = subtopics[val]