From 3a408f3dd948073183dd04c530ea7318f349d7dd Mon Sep 17 00:00:00 2001
From: Jeremy Fincher <jemfinch@users.sourceforge.net>
Date: Sun, 10 Oct 2004 03:39:59 +0000
Subject: [PATCH] Fixed our lack of raising IndexError on random.choice applied
 to sequences.

---
 src/fix.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/fix.py b/src/fix.py
index bc44244f4..87b679bdf 100644
--- a/src/fix.py
+++ b/src/fix.py
@@ -53,11 +53,14 @@ def choice(iterable):
         return _choice(iterable)
     else:
         n = 1
-        ret = None
+        m = new.module('') # Guaranteed unique value.
+        ret = m
         for x in iterable:
             if random.random() < 1/n:
                 ret = x
             n += 1
+        if ret is m:
+            raise IndexError
         return ret
 random.choice = choice