code: def Eg(self, **kwargs):
          '''
          Returns the strain-shifted bandgap, ``Eg``.
          '''
          return self.unstrained.Eg(**kwargs) + self.Eg_strain_shift(**kwargsf Eg(self, **kwargs):
          '''
          Returns the strain-shifted bandgap, ``Eg``.
          '''
          return self.unstrained.Eg(**kwargs) + self.Eg_strain_shift(**kwargs)
docs: Returns the strain-shifted bandgap, ``Eg``.