From 8177096ef687e4f7dae6a77d9538bc5973b72c61 Mon Sep 17 00:00:00 2001
From: Harry Mellor <19981378+hmellor@users.noreply.github.com>
Date: Fri, 20 Mar 2026 12:51:20 +0100
Subject: [PATCH] Add missing dunder methods to `SizeDict`

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
---
 src/transformers/image_utils.py | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/transformers/image_utils.py b/src/transformers/image_utils.py
index 1691a485d3b4..0312bec9cea6 100644
--- a/src/transformers/image_utils.py
+++ b/src/transformers/image_utils.py
@@ -1001,3 +1001,17 @@ def __eq__(self, other):
                 getattr(other, f.name) for f in fields(self)
             )
         return NotImplemented
+
+    def __or__(self, other) -> "SizeDict":
+        if isinstance(other, dict | SizeDict):
+            merged = dict(self)
+            merged.update(dict(other))
+            return SizeDict(**merged)
+        return NotImplemented
+
+    def __ror__(self, other) -> dict:
+        if isinstance(other, dict):
+            merged = dict(other)
+            merged.update(dict(self))
+            return merged
+        return NotImplemented