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Abstract Base class not returning correctly...

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Return Base class shared pointer using derived class C++...

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Use subclasses of abstract outer class in nested class...

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Is it possible to use an Abstract Base Class as a mixin with a dict subclass?...

@staticmethod return value...

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Python type annotations for instance of class derived from abstract base class...

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Scala: Trait Mixin with Abstract Base Class...

The Python Generator abstract base class doesn't implement the necessary __del__, is this intent...