code: def replace_argument(self, name, *args, **kwargs):
          
          new_arg = self.argument_class(name, *args, **kwargs)
          for index, arg in enumerate(self.args[:]):
              if new_arg.name == arg.name:
                  del self.args[index]
                  self.args.append(new_arg)
                  break
          return self
docs: Replace the argument matching the given name with a new version.