From d67c93c4ab4a7f2c176ed65de1f61486c079519b Mon Sep 17 00:00:00 2001
From: Richard Frank <rich@quantopian.com>
Date: Wed, 23 Mar 2016 18:26:42 -0400
Subject: [PATCH] DOC: Signal to doctest blank lines in the expected output

---
 zipline/utils/numpy_utils.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/zipline/utils/numpy_utils.py b/zipline/utils/numpy_utils.py
index db5f168a..b58d3e28 100644
--- a/zipline/utils/numpy_utils.py
+++ b/zipline/utils/numpy_utils.py
@@ -187,13 +187,13 @@ def rolling_window(array, length):
     >>> rolling_window(a, 2)
     array([[[ 0,  1,  2,  3,  4],
             [ 5,  6,  7,  8,  9]],
-
+    <BLANKLINE>
            [[ 5,  6,  7,  8,  9],
             [10, 11, 12, 13, 14]],
-
+    <BLANKLINE>
            [[10, 11, 12, 13, 14],
             [15, 16, 17, 18, 19]],
-
+    <BLANKLINE>
            [[15, 16, 17, 18, 19],
             [20, 21, 22, 23, 24]]])
     """