def all_energies(self):
        """
        Compilation of all energies from all electronic steps and ionic steps
        as a tuple of list of energies, e.g.,
        ((4507.24605593, 143.824705755, -512.073149912, ...), ...)
        """
        all_energies = []
        for i in range(len(self.electronic_steps)):
            energies = [step["E"] for step in self.electronic_steps[i]]
            energies.append(self.ionic_steps[i]["F"])
            all_energies.append(tuple(energies))
        return tuple(all_energies)
Compilation of all energies from all electronic steps and ionic steps
        as a tuple of list of energies, e.g.,
        ((4507.24605593, 143.824705755, -512.073149912, ...), ...)