.test: direct kwarg
native base class .test set to: 'test set directly'
.test: test set directly
.test: subclass kwarg
native base class .test set to: 'test set indirectly'
.test: test set indirectly
._new_attribute True
native base class ._new_attribute set to: True
.test: super init suffix
native base class .test set to: 'test set indirectly through b'
.test: test set indirectly through b
._new_attribute True
native base class ._new_attribute set to: True