From 4b097150525bb063524c2ab98ed42cbd0a13978f Mon Sep 17 00:00:00 2001
From: Jean Bredeche <jean@quantopian.com>
Date: Thu, 9 Jun 2016 13:28:43 -0400
Subject: [PATCH] ENH: better comments

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

diff --git a/zipline/sources/benchmark_source.py b/zipline/sources/benchmark_source.py
index 5b0f6243..beafe3dd 100644
--- a/zipline/sources/benchmark_source.py
+++ b/zipline/sources/benchmark_source.py
@@ -105,18 +105,18 @@ class BenchmarkSource(object):
     def _initialize_precalculated_series(self, asset, trading_schedule,
                                          trading_days, data_portal):
         """
-        Internal method that precalculates the benchmark return series for
+        Internal method that pre-calculates the benchmark return series for
         use in the simulation.
 
         Parameters
         ----------
         asset:  Asset to use
 
-        env: TradingEnvironment
+        trading_schedule: TradingSchedule
 
         trading_days: pd.DateTimeIndex
 
-        trading_schedule: TradingSchedule
+        data_portal: DataPortal
 
         Notes
         -----