Update app.py

app.py

@@ -47,6 +47,7 @@ with st.form(key='my_form'):
     submit_button = st.form_submit_button(label='Submit')
     if submit_button:
       with torch.no_grad():
+        input_ids = tokenizer.encode(prompt, return_tensors='pt')
         outputs = model(prompt, labels=input_ids)
         loss, logits = outputs[:2]
         perplex = math.exp(loss)