def _cdf(self, x, a):
        k = floor(x)
        f = lambda k, a: 1.0 - exp(-a * k) / (exp(a) + 1)
        f2 = lambda k, a: (exp(a) + 1) / exp(a * (k+1))
        return _lazywhere(k >= 0, (k, a), f=f, f2=f2)
dataset/ETHPy150Open scipy/scipy/scipy/stats/_discrete_distns.py/dlaplace_gen._cdf/swapped operands of `/`