def y(self):
        """
        The :math:`X` weighted properly by the errors from *y_error*
        """
        if self._y is None:
            self._y = self.y_unweighted/self.y_error
        return self._y
def y(self):
        """
        The :math:`X` weighted properly by the errors from *y_error*
        """
        if self._y is None:
            self._y = self.y_unweighted/self.y_error
        return self._y
def y ( self ) : if self . _y is None : self . _y = self . y_unweighted / self . y_error return self . _y
The :math:`X` weighted properly by the errors from *y_error*
The : math : X weighted properly by the errors from * y_error *