Update app.py

app.py

@@ -231,6 +231,15 @@ questions = [
     "what is the dependent variable in this study?",
 ]
 
+def clear_all(chat_history, url, file, question, model):
+    # Return default values for all fields
+    return [], '', None, '', 'gpt-3.5-turbo'
+# Create a new button with the label "Clear"
+clear_btn = gr.Button(value='Clear')
+# Bind the click event of the "Clear" button to the clear_all function
+clear_btn.click(clear_all,inputs=[chatbot, url, file, question, model],outputs=[chatbot, url, file, question, model],)
+
+
 recommender = SemanticSearch()
 
 title = 'PDF GPT Turbo'
@@ -271,6 +280,7 @@ with gr.Blocks(css="""#chatbot { font-size: 14px; min-height: 1200; }""") as dem
         with gr.Group():
             #chatbot = gr.Chatbot(placeholder="Chat History", label="Chat History", lines=20, elem_id="chatbot")
             chatbot = gr.Chatbot(placeholder="Chat History", label="Chat History", lines=50, elem_id="chatbot")
+            clear_btn
 
     # Bind the click event of the button to the question_answer function
     btn.click(