def inverse_deriv2(self, z):
    "\n        Second derivative of the inverse of the Log-Log transform link function\n\n        Parameters\n        ----------\n        z : array_like\n            The value of the inverse of the LogLog link function at `p`\n\n        Returns\n        -------\n        g^(-1)''(z) : ndarray\n            The second derivative of the inverse of the LogLog link function\n        "
    return (self.inverse_deriv(z) * (np.exp((- z)) - 1))
Second derivative of the inverse of the Log-Log transform link function

Parameters
----------
z : array_like
    The value of the inverse of the LogLog link function at `p`

Returns
-------
g^(-1)''(z) : ndarray
    The second derivative of the inverse of the LogLog link function
def inverse_deriv2(self, z):
    "\n        Second derivative of the inverse of the Log-Log transform link function\n\n        Parameters\n        ----------\n        z : array_like\n            The value of the inverse of the LogLog link function at `p`\n\n        Returns\n        -------\n        g^(-1)(z) : ndarray\n            The second derivative of the inverse of the LogLog link function\n        "
    return (self.inverse_deriv(z) * (np.exp((- z)) - 1))