From 75878d583d6b1e0ea158c62226d130238cd552d6 Mon Sep 17 00:00:00 2001
From: Sterling Harper <smharper@mit.edu>
Date: Mon, 8 Aug 2016 10:06:02 -0500
Subject: [PATCH] Address #695 comments

---
 openmc/data/function.py | 2 +-
 openmc/data/product.py  | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/openmc/data/function.py b/openmc/data/function.py
index e827e12833..798aa18cdd 100644
--- a/openmc/data/function.py
+++ b/openmc/data/function.py
@@ -13,7 +13,7 @@ INTERPOLATION_SCHEME = {1: 'histogram', 2: 'linear-linear', 3: 'linear-log',
 class Function1D(object):
     """A function of one independent variable with HDF5 support."""
 
-    __meta__class = ABCMeta
+    __metaclass__ = ABCMeta
 
     def __init__(self): pass
 
diff --git a/openmc/data/product.py b/openmc/data/product.py
index 116905f7a3..eec47c9560 100644
--- a/openmc/data/product.py
+++ b/openmc/data/product.py
@@ -35,7 +35,7 @@ class Product(object):
         yield represents particles from prompt and delayed sources.
     particle : str
         What particle the reaction product is.
-    yield_ : float or openmc.data.Tabulated1D or openmc.data.Polynomial
+    yield_ : openmc.data.Function1D
         Yield of secondary particle in the reaction.
 
     """
@@ -118,8 +118,7 @@ class Product(object):
 
     @yield_.setter
     def yield_(self, yield_):
-        cv.check_type('product yield', yield_,
-                      (Tabulated1D, Polynomial))
+        cv.check_type('product yield', yield_, Function1D)
         self._yield = yield_
 
     def to_hdf5(self, group):