sorting keyword dropdown

app.py

@@ -181,7 +181,7 @@ def display_recommendations():
         list_publisherid.append(keyword_publisherid.split("_")[1])
     # list_keywords = ['aquaman', 'superman', 'batman', 'shoes', 'electronics', 'wallet', 'movies', 'books']  # Temporary
     list_publisherid = ['725895'] # For the time being Publisher ID is being HardCoded.
-    selected_keyword = st.sidebar.selectbox("Select a Keyword:", set(list_keywords.sort()))
+    selected_keyword = st.sidebar.selectbox("Select a Keyword:", set(sorted(list_keywords)))
     publisher_id = st.sidebar.selectbox("Select a Publisher ID:", set(list_publisherid))
 
     # st.write(selected_keyword)