fix bugs

app.py

@@ -4,7 +4,9 @@ import pandas as pd
 
 model_list = ["distilbert-base-uncased-finetuned-sst-2-english", "cardiffnlp/twitter-roberta-base-sentiment", "finiteautomata/bertweet-base-sentiment-analysis"]
 model_name = st.selectbox('Which model to predict?', model_list)
-sentiment_pipeline = pipeline(model=model_name)
 text = st.text_input("text for sentiment analysis", value="I love you")
-result = sentiment_pipeline(text)
-st.write(result)
+
+if st.button('Run'):
+    sentiment_pipeline = pipeline(model=model_name)
+    result = sentiment_pipeline(text)
+    st.write(result)