Added in a mixin module with an Equality class for mixin use

openmc/mixin.py

@@ -0,0 +1,24 @@
+import numpy as np
+
+
+class Equality(object):
+    """A Class which provides generic __eq__ and __ne__ functionality which
+    can easily be inherited by downstream classes.
+    """
+
+    def __eq__(self, other):
+        eqval = True
+        if isinstance(other, type(self)):
+            for key, value in self.__dict__.items():
+                if key in other.__dict__:
+                    if not np.array_equal(value, other.__dict__.get(key)):
+                        eqval = False
+                else:
+                    eqval = False
+        else:
+            eqval = False
+
+        return eqval
+
+    def __ne__(self, other):
+        return not self.__eq__(other)