def _represent_JzOp(self, basis, **options):
        jp = JplusOp(self.name)._represent_JzOp(basis, **options)
        jm = JminusOp(self.name)._represent_JzOp(basis, **options)
        return (jm - jp)/(Integer(2)*I)
dataset/ETHPy150Open sympy/sympy/sympy/physics/quantum/spin.py/JyOp._represent_JzOp/swapped operands of `-`