def set_site_energies( self, energies ):
        """
        Set the energies for every site in the lattice according to the site labels.

        Args:
            energies (Dict(Str:Float): Dictionary of energies for each site label, e.g.::

                { 'A' : 1.0, 'B', 0.0 }

        Returns:
            None
        """
        self.site_energies = energies
        for site_label in energies:
            for site in self.sites:
                if site.label == site_label:
                    site.energy = energies[ site_label ]
Set the energies for every site in the lattice according to the site labels.

        Args:
            energies (Dict(Str:Float): Dictionary of energies for each site label, e.g.::

                { 'A' : 1.0, 'B', 0.0 }

        Returns:
            None