Update app.py

app.py

@@ -16,9 +16,11 @@ import docx2txt
 from io import StringIO
 from PyPDF2 import PdfFileReader
 import warnings
-import nltk.data
+import nltk
 
-tokenizer = nltk.data.load('tokenizers/punkt/english.pickle')
+nltk.download('punkt')
+
+from nltk import sent_tokenize
 
 warnings.filterwarnings("ignore")