From dba3c2695c59fdb11825dbdf8f3b0ab6e0b368b2 Mon Sep 17 00:00:00 2001
From: "Yilei \"Dolee\" Yang" <yileiyang@google.com>
Date: Sun, 19 Mar 2023 07:43:39 -0700
Subject: [PATCH] Fix bug introduced in #3564. (#3615)

---
 src/black/lines.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/black/lines.py b/src/black/lines.py
index b2bdcc441b4..fb5933ecbfb 100644
--- a/src/black/lines.py
+++ b/src/black/lines.py
@@ -598,7 +598,7 @@ def _maybe_empty_lines(self, current_line: Line) -> Tuple[int, int]:
                     before = 1
                 elif (
                     not depth
-                    and self.previous_defs[-1]
+                    and self.previous_defs[-1].depth
                     and current_line.leaves[-1].type == token.COLON
                     and (
                         current_line.leaves[0].value