code: def all_energies(self):
          
          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)
docs: 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, ...), ...)