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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 max_delta_volume(self):
 """ Maximum volume change along insertion """

        vols = [v.vol_charge for v in self.voltage_pairs]
        vols.extend([v.vol_discharge for v in self.voltage_pairs])
        return max(vols) / min(vols) - 1