From 5101e575ba729495c0e7ffd12d52a988e53e7817 Mon Sep 17 00:00:00 2001
From: Calen Pennington <calen.pennington@gmail.com>
Date: Thu, 7 Jun 2012 11:46:01 -0400
Subject: [PATCH] Adding documentation for parse_timedelta

---
 common/lib/xmodule/capa_module.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/common/lib/xmodule/capa_module.py b/common/lib/xmodule/capa_module.py
index baf3086e02..59e022cd16 100644
--- a/common/lib/xmodule/capa_module.py
+++ b/common/lib/xmodule/capa_module.py
@@ -28,6 +28,15 @@ def item(l, default="", process=lambda x: x):
 
 
 def parse_timedelta(time_str):
+    """
+    time_str: A string with the following components:
+        <D> day[s] (optional)
+        <H> hour[s] (optional)
+        <M> minute[s] (optional)
+        <S> second[s] (optional)
+
+    Returns a datetime.timedelta parsed from the string
+    """
     parts = TIMEDELTA_REGEX.match(time_str)
     if not parts:
         return