From f75691fd52ba3dbb7dda4cb8e46365a27009d686 Mon Sep 17 00:00:00 2001
From: Hsiaoming Yang <me@lepture.com>
Date: Wed, 26 Nov 2014 19:37:52 +0800
Subject: [PATCH] Use random.sample in AudioCaptcha

---
 captcha/audio.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/captcha/audio.py b/captcha/audio.py
index 098fe97..b0ff334 100644
--- a/captcha/audio.py
+++ b/captcha/audio.py
@@ -193,8 +193,7 @@ class AudioCaptcha(object):
 
         :param length: the return string length.
         """
-        for i in range(length):
-            yield random.choice(self.choices)
+        return random.sample(self.choices, length)
 
     def load(self):
         """Load voice data into memory."""