Update app.py

Sentiment analysis pipeline is included!

app.py

@@ -1,7 +1,10 @@
 import gradio as gr
+from transformers import pipeline
+    
+def sentiment(name):
+    out = pipe(text)
+    return out
 
-def greet(name):
-    return "Hello " + name + "!!"
-
-iface = gr.Interface(fn=greet, inputs="text", outputs="text")
+pipe = pipeline("sentiment-analysis")
+iface = gr.Interface(fn=sentiment, inputs="text", outputs="text")
 iface.launch()