replace all dataset.value with dataset[()] (or occasionally dataset[...])

openmc/data/function.py

@@ -434,7 +434,7 @@ class Polynomial(np.polynomial.Polynomial, Function1D):
         if dataset.attrs['type'].decode() != cls.__name__:
             raise ValueError("Expected an HDF5 attribute 'type' equal to '"
                              + cls.__name__ + "'")
-        return cls(dataset.value)
+        return cls(dataset[()])
 
 
 class Combination(EqualityMixin):