Update app.py

app.py

@@ -1,9 +1,9 @@
-import gradio as gr
+import gradio as gr # imports the gradio library
 
-#returns the message back to the user
+# returns the message back to the user
 def echo(message, history):
     return message
 
-chatbot = gr.ChatInterface() #chatbout ui - history & input
+chatbot = gr.ChatInterface(echo) # chatbout ui - history & input
 
-chatbot.launch() #lauches chatbot
+chatbot.launch() # lauches chatbot