Update app.py

app.py

@@ -82,7 +82,7 @@ def main():
     st.write("<div style='flex: 1;'></div>", unsafe_allow_html=True)
     st.write("<!-- End Spacer -->", unsafe_allow_html=True)
 
-    if pdf is not None:
+if pdf is not None:
     query = st.text_input("Ask questions about your PDF file (in any preferred language):")
 
     if st.button("Ask") or (query and query != st.session_state.get('last_input', '')):
@@ -117,6 +117,7 @@ def main():
     # Mark all messages as old after displaying
     st.session_state['chat_history'] = [(sender, msg, "old") for sender, msg, _ in st.session_state['chat_history']]
 
+
 def display_chat_history(chat_history):
     for chat in chat_history:
         background_color = "#FFA07A" if chat[2] == "new" else "#acf" if chat[0] == "User" else "#caf"