Update app.py

app.py

@@ -1,10 +1,14 @@
 import os
 import nltk
 
-nltk_data_dir = os.path.expanduser("~/nltk_data")
+# Use a directory within the user's home directory
+nltk_data_dir = os.path.expanduser("~/.nltk_data")
 os.makedirs(nltk_data_dir, exist_ok=True)
 nltk.data.path.append(nltk_data_dir)
 
+# Download NLTK data
+nltk.download('punkt', download_dir=nltk_data_dir, quiet=True)
+
 
 
 import chainlit as cl