def METHOD_NAME(self):
    shape_a = (4,)
    shape_b = (5,)
    self.a_np = mk_0to1_array(np, shape_a)
    self.b_np = mk_0to1_array(np, shape_b)
    self.a_num = num.array(self.a_np)
    self.b_num = num.array(self.b_np)