Update app.py

app.py

@@ -1,15 +1,13 @@
-from typing import Text, Any, Dict, Optional
-
 import json
 import copy
+import gradio as gr
 
 import tensorflow as tf
 import tensorflow_text
 from tensorflow.python.saved_model import tag_constants
 from huggingface_hub import Repository
 
-import gradio as gr
-#from pingpong import PingPong
+from pingpong import PingPong
 #from pingpong.gradio import GradioAlpacaChatPPManager
 #from pingpong.context import CtxLastWindowStrategy