From 1d1b59b800ba8c8817f19bd1a939d841c09f3038 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joakim=20S=C3=B8rensen?= <ludeeus@ludeeus.dev>
Date: Thu, 1 Dec 2022 19:26:30 +0100
Subject: [PATCH] Fix hassfest serializer injecting commas in empty lists
 (#83052)

* No trailing comma for empty lists

* Update script/hassfest/serializer.py

Co-authored-by: Aarni Koskela <akx@iki.fi>

Co-authored-by: Paulus Schoutsen <balloob@gmail.com>
Co-authored-by: Aarni Koskela <akx@iki.fi>
---
 script/hassfest/serializer.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/script/hassfest/serializer.py b/script/hassfest/serializer.py
index 101aea6837e..41f6a554aff 100644
--- a/script/hassfest/serializer.py
+++ b/script/hassfest/serializer.py
@@ -21,7 +21,9 @@ def _wrap_items(
     # on one line and some on multiple.
     if sort:
         items = sorted(items)
-    return f"{opener}{','.join(items)},{closer}"
+
+    joined_items = ", ".join(items)
+    return f"{opener}{joined_items}{',' if joined_items else ''}{closer}"
 
 
 def _mapping_to_str(data: Mapping[Any, Any]) -> str: