code: def get_cn(self, structure, n, use_weights=False):
          
          if self.weighted_cn != use_weights:
              raise ValueError("The weighted_cn parameter and use_weights "
                               "parameter should match!")
  
          return super().get_cn(structure, n, use_weights)
docs: Get coordination number, CN, of site with index n in structure.
  
          Args:
              structure (Structure): input structure.
              n (integer): index of site for which to determine CN.
              use_weights (boolean): flag indicating whether (True)
                  to use weights for computing the coordination number
                  or not (False, default: each coordinated site has equal
                  weight).
          Returns:
              cn (integer or float): coordination number.