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Re: subclassable types

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  Re: subclassable types Christian Heimes <christian@python.org> - 2013-02-22 12:00 +0100

#39540 — Re: subclassable types

Am 22.02.2013 10:35, schrieb Wolfgang Maier:
> Also: can you use introspection to find out whether a type is valid as a
> base type?

I don't think so. For CPython the information is stored in the type's
structure. When type->tp_flags & Py_TPFLAGS_BASETYPE is true then
subclassing is allowed. But I know of no way to retrieve that
information from Python code.

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