From b4d0ef91a5e94ad10707909d688e26513d62e0cc Mon Sep 17 00:00:00 2001
From: Georg Brandl <georg@python.org>
Date: Sat, 18 Jul 2009 09:03:10 +0000
Subject: #6513: fix example code: warning categories are classes, not
 instances.

---
 Doc/library/warnings.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Doc/library/warnings.rst b/Doc/library/warnings.rst
index d36955f..8fa6952 100644
--- a/Doc/library/warnings.rst
+++ b/Doc/library/warnings.rst
@@ -204,7 +204,7 @@ check::
         fxn()
         # Verify some things
         assert len(w) == 1
-        assert isinstance(w[-1].category, DeprecationWarning)
+        assert issubclass(w[-1].category, DeprecationWarning)
         assert "deprecated" in str(w[-1].message)
 
 One can also cause all warnings to be exceptions by using ``error`` instead of
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