From 7d15cb870f95f445d323438723b8894fb9e2139d Mon Sep 17 00:00:00 2001
From: Thomas Wiecki <thomas.wiecki@gmail.com>
Date: Wed, 19 Dec 2012 10:08:20 -0500
Subject: [PATCH] BUG: Adding of new fields to data panel source should be
 inside of if-statement.

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

diff --git a/zipline/sources/data_frame_source.py b/zipline/sources/data_frame_source.py
index 57c0a9e1..ccd99143 100644
--- a/zipline/sources/data_frame_source.py
+++ b/zipline/sources/data_frame_source.py
@@ -140,10 +140,10 @@ class DataPanelSource(DataSource):
                         'dt': dt,
                         'sid': sid,
                     }
-                for field_name, value in series.iteritems():
-                    event[field_name] = value
+                    for field_name, value in series.iteritems():
+                        event[field_name] = value
 
-                yield event
+                    yield event
 
     @property
     def raw_data(self):