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41 lines
906 B
Python
41 lines
906 B
Python
assert None is None
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y = None
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x = None
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assert x is y
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def none():
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pass
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def none2():
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return None
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assert none() is none()
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assert none() is x
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assert none() is none2()
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assert str(None) == "None"
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assert repr(None) == "None"
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assert type(None)() is None
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assert None.__eq__(3) is NotImplemented
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assert None.__ne__(3) is NotImplemented
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assert None.__eq__(None) is True
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assert None.__ne__(None) is False
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assert None.__lt__(3) is NotImplemented
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assert None.__le__(3) is NotImplemented
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assert None.__gt__(3) is NotImplemented
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assert None.__ge__(3) is NotImplemented
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none_type_dict = type(None).__dict__
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for name in ("__eq__", "__ne__", "__lt__", "__le__", "__gt__", "__ge__", "__hash__"):
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assert name in none_type_dict
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assert none_type_dict[name] is not object.__dict__[name]
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assert type(none_type_dict[name]).__name__ == "wrapper_descriptor"
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assert hash(None) & 0xFFFFFFFF == 0xFCA86420
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