Update app.py

app.py

@@ -19,6 +19,10 @@ chat_defaults = {
 
 chat_history = []
 
+def clear_chat():
+    chat_history = []
+    return None
+
 def generate_chat(prompt: str, chat_messages=chat_history):
     print(chat_messages)
     context = """
@@ -70,12 +74,12 @@ with gr.Blocks() as app:
             placeholder="Hi Gerard, can you introduce yourself?",
             container=False, 
             scale=6)
-        send = gr.Button(
-            value="", 
-            icon="./send-message.png", 
-            scale=1
-        )
-    # clear = gr.Button("Clear")
+        # send = gr.Button(
+        #     value="", 
+        #     icon="./send-message.png", 
+        #     scale=1
+        # )
+    clear = gr.Button("Clear")
 
     def user(user_message, history):
         return "", history + [[user_message, None]]
@@ -91,10 +95,10 @@ with gr.Blocks() as app:
     msg.submit(user, [msg, chatbot], [msg, chatbot], queue=False).then(
         bot, chatbot, chatbot
     )
-    send.click(user, [msg, chatbot], [msg, chatbot], queue=False).then(
-        bot, chatbot, chatbot
-    )
-    # clear.click(lambda: None, None, chatbot, queue=False)
+    # send.click(user, [msg, chatbot], [msg, chatbot], queue=False).then(
+    #     bot, chatbot, chatbot
+    # )
+    clear.click(clear_chat, None, chatbot, queue=False)
 
     gr.HTML("<h3><center>Hosted on 🤗 Spaces. Powered by Gradio & Google 🌴 PaLM.</center></h3>")