Update app.py

app.py

@@ -40,12 +40,15 @@ from nltk.corpus import stopwords
 from nltk.stem import WordNetLemmatizer
 
 # Download NLTK resources
+import nltk
+import os
+nltk.data.path.append(os.path.join(os.path.dirname(__file__), 'nltk_data'))
 try:
-    nltk.data.find('tokenizers/punkt')
+    nltk.data.find('tokenizers/punkt_tab')
     nltk.data.find('corpora/stopwords')
     nltk.data.find('corpora/wordnet')
 except LookupError:
-    nltk.download('punkt')
+    nltk.download('punkt_tab')
     nltk.download('stopwords')
     nltk.download('wordnet')