[New-bugs-announce] [issue24806] Inheriting from NoneType does not fail consistently

[Brecht Machiels]

New submission from Brecht Machiels:

These both raise an exception:

    class Null(type(None)): pass

    class Null(object, type(None)): pass

The following does not:

    class Object(object): pass
    class Null(Object, type(None)): pass

This should also raise a TypeError.
Also, the result is not what I expected, as "bool(Null())" yields True.

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components: Interpreter Core
messages: 248112
nosy: brechtm
priority: normal
severity: normal
status: open
title: Inheriting from NoneType does not fail consistently
type: behavior
versions: Python 2.7, Python 3.2, Python 3.3, Python 3.4, Python 3.5, Python 3.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24806>
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