Update app.py

app.py

@@ -1,6 +1,12 @@
 import streamlit as st 
 from functions_preprocess import LinguisticPreprocessor
 import pickle
+import nltk
+nltk.download('stopwords')
+download_if_non_existent('corpora/stopwords', 'stopwords')
+download_if_non_existent('taggers/averaged_perceptron_tagger', 'averaged_perceptron_tagger')
+download_if_non_existent('corpora/wordnet', 'wordnet')
+
 
 
 #################################################################### Streamlit interface