Update app.py

app.py

@@ -1,3 +1,15 @@
+import json
+
+def load_history(user):
+    try:
+        with open(f"{user}.json", "r") as f:
+            return json.load(f)
+    except:
+        return []
+
+def save_history(user, history):
+    with open(f"{user}.json", "w") as f:
+        json.dump(history, f)
 import gradio as gr
 from openai import OpenAI
 import os