From e27403b75f4cae15650292d6735b917fed3e9a8f Mon Sep 17 00:00:00 2001
From: "Gregory P. Smith" <greg@krypto.org>
Date: Mon, 8 Feb 2016 09:58:40 -0800
Subject: [PATCH] Clarify "cardinality of" as "number of elements in" as many
 readers do not have a math vocabulary.

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

diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index 774b0c6230a..e491fd26daa 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -3828,7 +3828,7 @@ The constructors for both classes work the same:
 
    .. describe:: len(s)
 
-      Return the cardinality of set *s*.
+      Return the number of elements in set *s* (cardinality of *s*).
 
    .. describe:: x in s