Update app.py

app.py

@@ -282,7 +282,7 @@ with st.form(key='columns_in_form'):
             
             for i in selections: # i is supposed to be a list of stubs, mostly one
                 if i != 'None':
-                    ]:
+                    for j in clusters[i]:
                         if j not in chosen:
                             chosen.append(j) # j is a stub.