From f4d96e065a841e7a7a68fb6f1ccbc6ae0a027999 Mon Sep 17 00:00:00 2001
From: Scott Sanderson <ssanderson@quantopian.com>
Date: Fri, 13 May 2016 14:44:26 -0400
Subject: [PATCH] TEST/PERF: Don't slice twice.

---
 tests/pipeline/test_technical.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/pipeline/test_technical.py b/tests/pipeline/test_technical.py
index 597aa84c..313337e4 100644
--- a/tests/pipeline/test_technical.py
+++ b/tests/pipeline/test_technical.py
@@ -78,7 +78,7 @@ class BollingerBandsTestCase(WithTechnicalFactor, ZiplineTestCase):
                 upper, middle, lower = [np.full(self.ndays, np.nan)] * 3
             else:
                 upper, middle, lower = talib.BBANDS(
-                    closes[:, n],
+                    close_col,
                     window_length,
                     k,
                     k,