code: def repr_part(self):
          
          optargs = [('weighting', array_str(self.array, nprint=10), ''),
                     ('exponent', self.exponent, 2.0)]
          return signature_string([], optargs, sep=',\n',
                                  mod=[[], ['!s', ':.4']])
docs: String usable in a space's ``__repr__`` method.