code: def assignrepr(self, prefix):
          
          caller = 'Timegrids('
          blanks = ' ' * (len(prefix) + len(caller))
          prefix = f'{prefix}{caller}'
          lines = [f'{self.init.assignrepr(prefix)},']
          if self.sim != self.init:
              lines.append(f'{self.sim.assignrepr(blanks)},')
          lines[-1] = lines[-1][:-1] + ')'
          return '\n'.join(lines)
docs: Return a |repr| string with a prefixed assignment.