Update app.py

app.py

@@ -57,10 +57,16 @@ with gr.Blocks() as demo:
 
     # First add user's message to the conversation history
     # Then get reply from the tutor and add that to the conversation history
-    user_chat_submit.click(
-        fn = add_user_message, inputs = [user_chat_input, study_tutor], outputs = [user_chat_input, chatbot, study_tutor], queue=False
+    user_chat_input.onkeydown(
+        fn = lambda event: handleKeyPress(event, add_user_message), 
+        inputs = [user_chat_input, study_tutor], 
+        outputs = [user_chat_input, chatbot, study_tutor], 
+        queue=False
     ).then(
-        fn = get_tutor_reply, inputs = [study_tutor], outputs = [user_chat_input, chatbot, study_tutor], queue=True
+        fn = get_tutor_reply, 
+        inputs = [study_tutor], 
+        outputs = [user_chat_input, chatbot, study_tutor], 
+        queue=True
     )
 
     # Testing the chat history storage, can be deleted at deployment