Update app.py

app.py

@@ -1,8 +1,12 @@
 import gradio as gr
 from transformers import pipeline
 import nltk
-nltk.download('punkt')
-from nltk.tokenize import sent_tokenize
+
+def sent_tokenize(text):
+    # Regular expression to split sentences
+    sentence_endings = re.compile(r'(?<!\w\.\w.)(?<![A-Z][a-z]\.)(?<=\.|\?|!)(\s|$)')
+    sentences = sentence_endings.split(text)
+    return [s.strip() for s in sentences if s.strip()]
 
 # Initialize the classifiers
 zero_shot_classifier = pipeline("zero-shot-classification", model="tasksource/ModernBERT-base-nli")