From 62a5b63d893466ed674d4f7aaa24f02e634aee9f Mon Sep 17 00:00:00 2001
From: Dominik Roth <dominik.roth.dev@gmail.com>
Date: Thu, 15 Aug 2024 19:03:56 +0200
Subject: [PATCH] .

---
 slate/slate.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/slate/slate.py b/slate/slate.py
index b1061e5..9b4af06 100644
--- a/slate/slate.py
+++ b/slate/slate.py
@@ -504,7 +504,7 @@ def insert_deep_dictionary(d: MutableMapping, t: tuple, value):
 
 def append_deep_dictionary(d: MutableMapping, t: tuple, value):
     if type(t) is tuple:
-        if len(t) is 1:
+        if len(t) == 1:
             if t[0] not in d:
                 d[t[0]] = []
             d[t[0]].append(value)