import python_extranative vs = python_extranative.make_vector_string() if not isinstance(vs, python_extranative.VectorString): # will be of type tuple if extranative not working raise RuntimeError("Not of type VectorString") for s1, s2 in zip(vs, ["one", "two"]): if s1 != s2: raise RuntimeError("Mismatch: " + s1 + " " + s2)