gh-61481: Document that memoryview, range, and slice cannot be subclassed#153766
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gh-61481: Document that memoryview, range, and slice cannot be subclassed#153766soreavis wants to merge 1 commit into
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…subclassed Among the built-in classes that can't be subclassed, only bool documents it. memoryview, range, and slice behave the same but say nothing, so it can only be found out by trying. Add the same note to those three. The wording mirrors the existing bool entry, minus the "further" that applies only to bool (which subclasses int).
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Among the built-in classes that can't be subclassed, only
booldocuments it.memoryview,range, andslicebehave the same but say nothing, so it can only be found out by trying. Add the same note to those three.The wording mirrors the existing
boolentry, minus the "further" that applies only tobool(which subclassesint). Confirmed at tip: subclassing each raisesTypeError(they lackPy_TPFLAGS_BASETYPE), whileintandlistallow it.This is the note the issue author proposed, and the thread confirmed all four are intentional rather than oversights. The
typesmodule classes mentioned in the issue are documented separately and are out of scope here.