code: def H8(self):
          "Sum entropy."
          return -(self.p_xplusy * np.log(self.p_xplusy + self.eps)).sum(1f H8(self):
          "Sum entropy."
          return -(self.p_xplusy * np.log(self.p_xplusy + self.eps)).sum(1)
docs: Sum entropy.