Update app.py

app.py

@@ -106,10 +106,10 @@ def pvsnp(problem):
     {"messages": "Use tools to answer:"+problem},
     stream_mode="updates",
 ):
-    for _, update in step.items():
-        for message in update.get("messages", []):
-            message.pretty_print()
-            output.append(message.pretty_print())
+        for _, update in step.items():
+           for message in update.get("messages", []):
+              message.pretty_print()
+              output.append(message.pretty_print())
     return output