From 79a8a08812c6b87af67f7b848b2a224cc79f48f8 Mon Sep 17 00:00:00 2001
From: Thomas Wiecki <thomas.wiecki@gmail.com>
Date: Thu, 6 Dec 2012 17:21:36 -0500
Subject: [PATCH] STY: Renamed fillna to clean_nans.

---
 zipline/test_algorithms.py  | 12 ++++++------
 zipline/transforms/utils.py |  6 +++---
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/zipline/test_algorithms.py b/zipline/test_algorithms.py
index 99f92a02..ee3e41a2 100644
--- a/zipline/test_algorithms.py
+++ b/zipline/test_algorithms.py
@@ -272,37 +272,37 @@ class BatchTransformAlgorithm(TradingAlgorithm):
         self.return_price_class = ReturnPriceBatchTransform(
             refresh_period=self.refresh_period,
             window_length=self.window_length,
-            fillna=False
+            clean_nans=False
         )
 
         self.return_price_decorator = return_price_batch_decorator(
             refresh_period=self.refresh_period,
             window_length=self.window_length,
-            fillna=False
+            clean_nans=False
         )
 
         self.return_args_batch = return_args_batch_decorator(
             refresh_period=self.refresh_period,
             window_length=self.window_length,
-            fillna=False
+            clean_nans=False
         )
 
         self.return_price_market_aware = ReturnPriceBatchTransform(
             refresh_period=self.refresh_period,
             window_length=self.window_length,
-            fillna=False
+            clean_nans=False
         )
 
         self.return_arbitrary_fields = return_data(
             refresh_period=self.refresh_period,
             window_length=self.window_length,
-            fillna=False
+            clean_nans=False
         )
 
         self.return_nan = return_price_batch_decorator(
             refresh_period=self.refresh_period,
             window_length=self.window_length,
-            fillna=True
+            clean_nans=True
         )
 
         self.iter = 0
diff --git a/zipline/transforms/utils.py b/zipline/transforms/utils.py
index c65644ca..1c9748aa 100644
--- a/zipline/transforms/utils.py
+++ b/zipline/transforms/utils.py
@@ -318,7 +318,7 @@ class BatchTransform(EventWindow):
                  func=None,
                  refresh_period=None,
                  window_length=None,
-                 fillna=True):
+                 clean_nans=True):
 
         super(BatchTransform, self).__init__(True,
                                              window_length=window_length)
@@ -328,7 +328,7 @@ class BatchTransform(EventWindow):
         else:
             self.compute_transform_value = self.get_value
 
-        self.fillna = fillna
+        self.clean_nans = clean_nans
 
         self.refresh_period = refresh_period
         self.window_length = window_length
@@ -428,7 +428,7 @@ class BatchTransform(EventWindow):
                 for field_name in self.field_names:
                     data[field_name][sid].ix[dt] = fields[field_name]
 
-        if self.fillna:
+        if self.clean_nans:
             # Fills in gaps of missing data during transform
             # of multiple stocks. E.g. we may be missing
             # minute data because of illiquidity of one stock