Update app.py

app.py

@@ -76,13 +76,17 @@ class AdvancedPdfChatbot:
             logging.error(f"PDF processing error: {e}")
             return False
 
-    def chat(self, query):
+    def chat(self, query, is_new_question=False):
         if not self.db:
             return "Please upload a PDF first."
         
         # Retrieve chat history
         chat_history = self.memory.load_memory_variables({}).get('chat_history', [])
         
+        # Reset chat history for new questions
+        if is_new_question:
+            chat_history = []  # For new questions, reset the chat history
+        
         # Generate context-aware response
         response = self.response_generator.generate_response(
             context=self.document_context, 
@@ -106,7 +110,8 @@ def upload_pdf(pdf_file):
 
 def respond(message, history):
     try:
-        bot_message = pdf_chatbot.chat(message)
+        is_new_question = len(history) == 0  # If history is empty, it's a new question
+        bot_message = pdf_chatbot.chat(message, is_new_question)
         history.append((message, bot_message))
         return "", history
     except Exception as e: