From 4c59857e1fa0cc2ad93944a438a020a414c6b0a0 Mon Sep 17 00:00:00 2001
From: Scott Sanderson <ssanderson@quantopian.com>
Date: Fri, 12 Aug 2016 13:15:31 -0400
Subject: [PATCH] DOC: Add a docstring for RecarrayField.

---
 zipline/pipeline/factors/factor.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/zipline/pipeline/factors/factor.py b/zipline/pipeline/factors/factor.py
index a9f3faef..3410a60d 100644
--- a/zipline/pipeline/factors/factor.py
+++ b/zipline/pipeline/factors/factor.py
@@ -1468,7 +1468,9 @@ class CustomFactor(PositiveWindowLengthMixin, CustomTermMixin, Factor):
 
 
 class RecarrayField(SingleInputMixin, Factor):
-
+    """
+    A single field from a multi-output factor.
+    """
     def __new__(cls, factor, attribute):
         return super(RecarrayField, cls).__new__(
             cls,