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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_compound_pd(self):
 """ Get the CompoundPhaseDiagram object, which can then be used for plotting. Returns: (CompoundPhaseDiagram) """

        # For this plot, since the reactions are reported in formation
        # energies, we need to set the energies of the terminal compositions
        # to 0. So we make create copies with 0 energy.
        entry1 = PDEntry(self.entry1.composition, 0)
        entry2 = PDEntry(self.entry2.composition, 0)

        cpd = CompoundPhaseDiagram(
            self.rxn_entries + [entry1, entry2],
            [Composition(entry1.composition.reduced_formula),
             Composition(entry2.composition.reduced_formula)],
            normalize_terminal_compositions=False) 
        return cpd