From 6e7b0815b441a360b650d42fae51dfef85839bb7 Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Sun, 4 Mar 2012 00:07:10 +0100
Subject: [PATCH] PEP 416: add the default value of a function argument use
 case

---
 pep-0416.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pep-0416.txt b/pep-0416.txt
index 896556d9d..1ad829586 100644
--- a/pep-0416.txt
+++ b/pep-0416.txt
@@ -42,6 +42,8 @@ Use cases:
  * frozendict avoids the need of a read-only proxy in some cases. frozendict is
    faster than a proxy because getting an item in a frozendict is a fast lookup
    whereas a proxy requires a function call.
+ * use a frozendict as the default value of function argument: avoid the
+   problem of mutable default argument.
 
 
 Constraints