code: def _compute_y_wrapper(self, *args):
          r
          return self._compute_y(scipy.atleast_2d(scipy.asarray(args, dtype=float)))
docs: r"""Convert tau to :math:`y=\sqrt{2\nu\sum_i(\tau_i^2/l_i^2)}`.
          
          Takes `tau` as an argument list for compatibility with :py:func:`mpmath.diff`.
          
          Parameters
          ----------
          tau[0] : scalar float
              First element of `tau`.
          tau[1] : And so on...
          
          Returns
          -------
          y : scalar float
              Inner part of Matern kernel at the given `tau`.