more trailing comma tests (#2810)

[etc/vim.git] / src / black / lines.py

diff --git a/src/black/lines.py b/src/black/lines.py
index c602aa69ce9b65472b838ded24815ae7be6eb7cb..7d50f02aebc16b1787239dcf3f41625464b29dc5 100644 (file)
--- a/src/black/lines.py
+++ b/src/black/lines.py
@@ -277,7 +277,9 @@ class Line:
         if self.is_import:
             return True
 
-        if not is_one_tuple_between(closing.opening_bracket, closing, self.leaves):
+        if closing.opening_bracket is not None and not is_one_tuple_between(
+            closing.opening_bracket, closing, self.leaves
+        ):
             return True
 
         return False