From d1d858f07278517d0a7bcbca3effc734cf37e79d Mon Sep 17 00:00:00 2001
From: atomicmac <156139337+atomicmac@users.noreply.github.com>
Date: Thu, 29 Feb 2024 14:22:30 -0800
Subject: [PATCH] Use is with PLACEHOLDER instead of equality test

PLACEHOLDER is a specific instance of an object, the test here should be "is not" instead of "!="
I am experimenting with adding ndarray support, and the equality test here causes problems.
---
 src/betterproto/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/betterproto/__init__.py b/src/betterproto/__init__.py
index da6893db7..c16e2cdd9 100644
--- a/src/betterproto/__init__.py
+++ b/src/betterproto/__init__.py
@@ -749,7 +749,7 @@ def __post_init__(self) -> None:
                 group_current.setdefault(meta.group)
 
             value = self.__raw_get(field_name)
-            if value != PLACEHOLDER and not (meta.optional and value is None):
+            if value is not PLACEHOLDER and not (meta.optional and value is None):
                 # Found a non-sentinel value
                 all_sentinel = False