Update app.py

app.py

@@ -62,7 +62,7 @@ def keyphrase_generator(article_link, model_1, model_2, max_num_keywords):
        count_dict[l]=0
   for sent, score in count_dict.items():
     score_list.append(score)
-  clean_sentences_new = pd.Series(corpus).str.replace("[^a-zA-Z]", " ").tolist()
+  clean_sentences_new = pd.Series(corpus).str.replace("[^a-zA-Z]", " ", regex=True).tolist()
   corpus_embeddings = model_1.encode(clean_sentences_new)
   sim_mat = np.zeros([len(clean_sentences_new), len(clean_sentences_new)])
   for i in range(len(clean_sentences_new)):