Update app.py

just added } resolved error

app.py

@@ -69,7 +69,7 @@ if user_input:
     for row in rows:
       if {"role": row[0], "parts": [{"text": row[1]}]} not in displayed_msgs:  
         st.markdown(f"**{row[0].title()}:** {row[1]}")
-        displayed_msgs.append({"role": row[0], "parts": [{"text": row[1]]})
+        displayed_msgs.append({"role": row[0], "parts": [{"text": row[1]}]})
               
 for message in chat_history:
   if {"role": message["role"], "parts": [message["parts"][0]]} not in rows: