Simplify creation of the __new__ method in namedtuple() (GH-20361) (GH-20409)
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@ -406,11 +406,9 @@ def namedtuple(typename, field_names, *, rename=False, defaults=None, module=Non
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# Create all the named tuple methods to be added to the class namespace
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s = f'def __new__(_cls, {arg_list}): return _tuple_new(_cls, ({arg_list}))'
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s = f'lambda _cls, {arg_list}: _tuple_new(_cls, ({arg_list}))'
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namespace = {'_tuple_new': tuple_new, '__name__': f'namedtuple_{typename}'}
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# Note: exec() has the side-effect of interning the field names
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exec(s, namespace)
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__new__ = namespace['__new__']
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__new__ = eval(s, namespace)
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__new__.__doc__ = f'Create new instance of {typename}({arg_list})'
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if defaults is not None:
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__new__.__defaults__ = defaults
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