Update app.py

app.py

@@ -6,6 +6,7 @@ import string
 bert_tokenizer = None
 bert_model = None
 top_k = 20
+model_name = None
 
 from transformers import BertTokenizer, BertForMaskedLM
 
@@ -125,6 +126,7 @@ def main():
   global top_k 
   global bert_tokenizer
   global bert_model
+  global model_name
   
   st.markdown("<h3 style='text-align: center;'>Qualitative evaluation of  any pretrained BERT model</h3>", unsafe_allow_html=True)
   st.markdown("""