Update app.py

app.py

@@ -23,7 +23,6 @@ llm = HuggingFaceEndpoint(
 )
 chat_model = ChatHuggingFace(llm=llm)
 
-global messages
 messages = [
     SystemMessage(content="You are a helpful assistant."),
     HumanMessage(content="Hi AI, how are you today?"),
@@ -39,6 +38,7 @@ def handle_query(query: str, mode: str):
         return "Invalid mode selected."
 
 def chat_mode(query: str):
+    global messages
     prompt = HumanMessage(content=query)
     messages.append(prompt)
     response = chat_model.invoke(messages)
@@ -48,6 +48,7 @@ def chat_mode(query: str):
     return f"You: {query}\nIT-Assistant: {response.content}"
 
 def web_search(query: str):
+    global messages
     similar_docs = db.similarity_search(query, k=3)
     if similar_docs:
         source_knowledge = "\n".join([x.page_content for x in similar_docs])