From 255cad36c27d74b49a43b33bc811557e6d5aa283 Mon Sep 17 00:00:00 2001
From: Ezzeri Esa <ezzeri.esa@gmail.com>
Date: Mon, 12 Feb 2024 22:33:08 -0800
Subject: [PATCH] add asserts for hidden attributes

---
 modal/functions.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/modal/functions.py b/modal/functions.py
index 9b81eeed6a..36858d4718 100644
--- a/modal/functions.py
+++ b/modal/functions.py
@@ -1016,6 +1016,7 @@ async def lookup(
     @property
     def tag(self):
         """mdmd:hidden"""
+        assert hasattr(self, "_tag")
         return self._tag
 
     @property
@@ -1032,6 +1033,7 @@ def env(self) -> FunctionEnv:
 
     def get_build_def(self) -> str:
         """mdmd:hidden"""
+        assert hasattr(self, "_raw_f") and hasattr(self, "_build_args")
         return f"{inspect.getsource(self._raw_f)}\n{repr(self._build_args)}"
 
     # Live handle methods