From 79ab1d13c01781afc10d5edf6f6e0ccdef41e3bd Mon Sep 17 00:00:00 2001
From: Thomas Wiecki <thomas.wiecki@gmail.com>
Date: Tue, 25 Sep 2012 13:35:47 -0400
Subject: [PATCH] Fixes circular import problem.

---
 zipline/lines.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/zipline/lines.py b/zipline/lines.py
index a3dfa9ba..a8fedc56 100644
--- a/zipline/lines.py
+++ b/zipline/lines.py
@@ -60,7 +60,6 @@ before invoking simulate.
                           +---------------------------------+
 """
 
-from zipline.test_algorithms import TestAlgorithm
 from zipline.utils import factory
 
 from zipline.gens.composites import (
@@ -144,6 +143,8 @@ class SimulatedTrading(object):
             - transforms: optional parameter that provides a list
               of StatefulTransform objects.
         """
+        from zipline.test_algorithms import TestAlgorithm
+
         assert isinstance(config, dict)
         sid_list = config.get('sid_list')
         if not sid_list: