Update app.py

app.py

@@ -167,7 +167,7 @@ agent = CodeAgent(
     description=None,
     prompt_templates=prompt_templates,
     add_base_tools=True,
-    additional_authorized_imports=["time", "numpy", "pandas"],
+    additional_authorized_imports=["time", "numpy", "pandas","datetime"],
 )
 
 GradioUI(agent).launch()