Using __new__

[Jonathan Gossage]

I am attempting to use the __new__ method in the following code:
class SingletonExample(object):

    _instance = None

    def __new__(cls, **kwargs):
        if cls._instance is None:
            cls._instance = super().__new__(cls, **kwargs)
        return cls._instance

    def __init__(self, **kwargs) -> None:
        our_attributes = ('h', 'x')
        if kwargs is not None:
            for k, v in kwargs.items():
                if k in our_attributes:
                    setattr(self, k, v)

a = SingletonExample(h=1)

and I get the following result:

(PRV) jonathan at jfgdev:/PR$ python -m Library.Testing.test2
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/mnt/ProgrammingRenaissance/Library/Testing/test2.py", line 16, in
<module>
    a = SingletonExample(h=1)
        ^^^^^^^^^^^^^^^^^^^^^
  File "/mnt/ProgrammingRenaissance/Library/Testing/test2.py", line 6, in
__new__
    cls._instance = super().__new__(cls, **kwargs)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: object.__new__() takes exactly one argument (the type to
instantiate)

I am quite puzzled as it looks as if this code will not work if the
super-class is 'object'. Any suggestions on how to proceed?

-- 
Jonathan Gossage