From ee1c70bd99a9c8c0f0a28f9566db23047b0f1828 Mon Sep 17 00:00:00 2001
From: Ruth Comer <10599679+rcomer@users.noreply.github.com>
Date: Fri, 18 Jul 2025 19:52:27 +0100
Subject: [PATCH] FIX: cast Patch linewidth to float for dash scaling

---
 lib/matplotlib/patches.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/matplotlib/patches.py b/lib/matplotlib/patches.py
index 477eee9f5a7a..d750e86e401f 100644
--- a/lib/matplotlib/patches.py
+++ b/lib/matplotlib/patches.py
@@ -459,7 +459,8 @@ def set_linewidth(self, w):
         w : float or None
         """
         w = mpl._val_or_rc(w, 'patch.linewidth')
-        self._linewidth = float(w)
+        w = float(w)
+        self._linewidth = w
         self._dash_pattern = mlines._scale_dashes(*self._unscaled_dash_pattern, w)
         self.stale = True