misc: Flake8

Author: ZoeLeibowitz

tests/test_symbolics.py

@@ -14,7 +14,7 @@
                               CallFromPointer, Cast, DefFunction, FieldFromPointer,
                               INT, FieldFromComposite, IntDiv, Namespace, Rvalue,
                               ReservedWord, ListInitializer, uxreplace, pow_to_mul,
-                              retrieve_derivatives, BaseCast, SizeOf)
+                              retrieve_derivatives, BaseCast, SizeOf, sympy_dtype)
 from devito.tools import as_tuple
 from devito.types import (Array, Bundle, FIndexed, LocalObject, Object,
                           ComponentAccess, StencilDimension, Symbol as dSymbol,