From 855d2bf04aaebfc1696e34664b48521bffd6a79f Mon Sep 17 00:00:00 2001
From: Martin Rubey <martin.rubey@tuwien.ac.at>
Date: Mon, 26 Sep 2022 18:58:50 +0200
Subject: [PATCH] remove unused variable

---
 src/sage/rings/lazy_series_ring.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sage/rings/lazy_series_ring.py b/src/sage/rings/lazy_series_ring.py
index c78c723f968..c0e0d536562 100644
--- a/src/sage/rings/lazy_series_ring.py
+++ b/src/sage/rings/lazy_series_ring.py
@@ -986,7 +986,7 @@ def _test_revert(self, **options):
                 raise AssertionError("compositional inverse of %s should exist: %s" % (x, error))
             try:
                 vy = y.valuation()
-                m = y[vy]
+                _ = y[vy]
             except NotImplementedError:
                 pass
             except (ValueError, TypeError):