From 50e0334b3d4fa0ca5203b3920b35fe9ffbccf390 Mon Sep 17 00:00:00 2001
From: Eddie Hebert <ehebert@quantopian.com>
Date: Tue, 19 Mar 2013 20:53:44 -0400
Subject: [PATCH] STY: Uses if/else for setting sim_params in algorithm.

Instead of checking 'if' and then 'if not', uses an if/else.
---
 zipline/algorithm.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/zipline/algorithm.py b/zipline/algorithm.py
index ac2dd8e7..2a59a5e8 100644
--- a/zipline/algorithm.py
+++ b/zipline/algorithm.py
@@ -197,8 +197,7 @@ class TradingAlgorithm(object):
 
         if sim_params:
             self.sim_params = sim_params
-
-        if not self.sim_params:
+        else:
             self.sim_params = create_simulation_parameters(
                 start=start,
                 end=end,