Address #698 comments

docs/source/io_formats/fission_energy.rst

@@ -9,8 +9,8 @@ ENDF-102_ for details).  It gives the information needed to compute the energy
 carried away from fission reactions by each reaction product (e.g. fragment
 nuclei, neutrons) which depends on the incident neutron energy.  OpenMC is
 distributed with one of these files under
-openmc/data/fission_Q_data_endfb71.h5.  More files of this format can be
-created from ENDF files with the
+data/fission_Q_data_endfb71.h5.  More files of this format can be created from
+ENDF files with the
 ``openmc.data.write_compact_458_library`` function.  They can be read with the
 ``openmc.data.FissionEnergyRelease.from_compact_hdf5`` class method.
 

openmc/data/function.py

@@ -13,12 +13,11 @@ INTERPOLATION_SCHEME = {1: 'histogram', 2: 'linear-linear', 3: 'linear-log',
 class Function1D(object):
     """A function of one independent variable with HDF5 support."""
 
-    __metaclass__ = ABCMeta
-
     def __init__(self): pass
 
-    @abstractmethod
-    def __call__(self): pass
+    def __call__(self):
+        raise NotImplemented('Subclasses of Function1D should overwrite the '
+                             '__call__ and to_hdf5 methods')
 
     @abstractmethod
     def to_hdf5(self, group, name='xy'):
@@ -32,7 +31,8 @@ class Function1D(object):
             Name of the dataset to create
 
         """
-        pass
+        raise NotImplemented('Subclasses of Function1D should overwrite the '
+                             '__call__ and to_hdf5 methods')
 
     @classmethod
     def from_hdf5(cls, dataset):

scripts/openmc-ace-to-hdf5

@@ -124,7 +124,7 @@ for filename in ace_libraries:
             # Fission energy release data, if available
             if args.fission_energy_release is not None:
                 fer = openmc.data.FissionEnergyRelease.from_compact_hdf5(
-                                           args.fission_energy_release, neutron)
+                    args.fission_energy_release, neutron)
                 if fer is not None:
                     neutron.fission_energy = fer