Update app.py

app.py

@@ -14,6 +14,9 @@ from collections import defaultdict
 import os
 
 
+got_csv = False
+
+
 def find_most_valuable_feature(csv_file):
     print("find_most_valuable_feature")
     print(csv_file)
@@ -106,6 +109,7 @@ def process_and_analyze_data(csv_file):
 
 @cl.on_message
 async def handle_message(message: cl.Message):
+    global got_csv
     # Retrieve the CSV file from the message
     csv_file = next(
         (
@@ -120,6 +124,7 @@ async def handle_message(message: cl.Message):
     print(f"CSV File: {csv_file}")
 
     if csv_file:
+        got_csv = True
         try:
             
             image_buffer = find_most_valuable_feature(csv_file)
@@ -152,7 +157,8 @@ async def handle_message(message: cl.Message):
         except Exception as e:
             await cl.Message(content=f"An error occurred: {str(e)}").send()
     else:
-        await cl.Message(content="Please upload a CSV file.").send()
+        if not got_csv:
+            await cl.Message(content="Please upload a CSV file.").send()
 
 
 # Run the ChainLit app