Update app.py

app.py

@@ -3,9 +3,12 @@ from sentence_transformers import SentenceTransformer, util
 import PyPDF2
 import nltk
 from nltk.tokenize import sent_tokenize
+from pathlib import Path
 
 # Ensure NLTK resources are downloaded
-nltk.download("punkt")
+nltk_data_path = Path(nltk.data.find("tokenizers/punkt").path) if nltk.data.find("tokenizers/punkt") else None
+if not nltk_data_path:
+    nltk.download("punkt", quiet=True)
 
 # Function to extract text from the uploaded PDF
 def extract_text_from_pdf(pdf_file):