Method _replace

recipes/Python/500261_Named_Tuples/recipe-500261.py:140–141

(self, _map=map, **kwds)

        'Point class with optimized _make() and _replace() without error-checking'
        _make = classmethod(tuple.__new__)
        def _replace(self, _map=map, **kwds):
            return self._make(_map(kwds.get, ('x', 'y'), self))

    print Point(11, 22)._replace(x=100)