def _argcheck(self, alpha, beta):
        if beta == -1:
            self.b = 0.0
        elif beta == 1:
            self.a = 0.0
        return (alpha > 0) & (alpha <= 2) & (1 <= beta) & (beta >= -1)
dataset/ETHPy150Open scipy/scipy/scipy/stats/_continuous_distns.py/levy_stable_gen._argcheck/swapped operands of `<=`