Update app.py

app.py

@@ -31,6 +31,7 @@ context = st.text_area("Enter the context here")
 
 # 添加一个按钮，用户点击后执行问答
 if st.button('Answer the Question'):
+    progress_bar = st.progress(0)
     if context and question:
         out = pipe({
             'question': question,